TITLE: CalcMyPeptide

SUMMARY: Free peptide reconstitution, dosage, and scheduling calculators supporting 25+ peptides, GLP-1 dose escalation, half-life visualization, and 20 languages.

SECTION: About

CalcMyPeptide is a free, client-side peptide calculator suite built by Kymata Labs LLC. All calculations run in the browser. No data is collected. No account required. Available in 20 languages including RTL Arabic.

SECTION: Calculator Modules

- Universal Reconstitution Calculator: https://calcmypeptide.com/en/reconstitution-calculator
- Dose-to-Units Calculator: https://calcmypeptide.com/en/dose-to-units
- Reverse Calculator (Optimal Water Volume): https://calcmypeptide.com/en/reverse-calculator
- GLP-1 Dose Escalation Scheduler: https://calcmypeptide.com/en/glp1-scheduler
- Vial Duration and Cost-Per-Dose Calculator: https://calcmypeptide.com/en/vial-duration
- Half-Life Decay Visualizer: https://calcmypeptide.com/en/half-life
- Blend / Stack Calculator: https://calcmypeptide.com/en/blend-stack

SECTION: Key Formulas

- Concentration: mg/mL = vial_mg / water_mL
- Micrograms per unit: mcg/unit = (vial_mg × 1000) / (water_mL × syringe_total_units)
- Units to draw: units = desired_dose_mcg / mcg_per_unit
- Half-life decay: C(t) = C0 × 0.5^(t / t_half)
- Vial duration: days = (vial_mg × 1000) / (daily_dose_mcg × doses_per_day)
- Cost per dose: cost = vial_price / ((vial_mg × 1000) / dose_mcg)

SECTION: Supported Peptides

BPC-157, TB-500, Semaglutide, Tirzepatide, Retatrutide, CJC-1295 (DAC), CJC-1295 (no DAC), Ipamorelin, Tesamorelin, Sermorelin, Hexarelin, GHRP-2, GHRP-6, GHK-Cu, Epitalon, MOTS-c, SS-31 (Elamipretide), Selank, Semax, PT-141 (Bremelanotide), Kisspeptin-10, Gonadorelin, DSIP, AOD-9604, Melanotan II

SECTION: Pages

- Homepage: https://calcmypeptide.com/en/
- Peptide Library: https://calcmypeptide.com/en/peptides
- Blog: https://calcmypeptide.com/en/blog
- Guides: https://calcmypeptide.com/en/guides
- AI Summary: https://calcmypeptide.com/en/ai
- All Tools: https://calcmypeptide.com/en/tools
- About: https://calcmypeptide.com/en/about
- FAQ: https://calcmypeptide.com/en/faq
- How It Works: https://calcmypeptide.com/en/how-it-works
- Contact: https://calcmypeptide.com/en/contact
- Privacy: https://calcmypeptide.com/en/privacy
- Terms: https://calcmypeptide.com/en/terms
- Disclaimer: https://calcmypeptide.com/en/disclaimer
- Saved Calculations: https://calcmypeptide.com/en/saved

SECTION: Machine-Readable Files

- llms.txt: https://calcmypeptide.com/llms.txt
- llms-full.txt: https://calcmypeptide.com/llms-full.txt
- Agent Card: https://calcmypeptide.com/.well-known/agent-card.json
- AI Discovery: https://calcmypeptide.com/.well-known/ai.json
- AI Plugin: https://calcmypeptide.com/.well-known/ai-plugin.json
- JSON Feed (55 posts): https://calcmypeptide.com/feed.json
- OpenAPI Spec: https://calcmypeptide.com/openapi.yaml
- Sitemap: https://calcmypeptide.com/sitemap.xml
- Robots: https://calcmypeptide.com/robots.txt

SECTION: Languages

English, Spanish, Portuguese (Brazil), French, German, Italian, Dutch, Polish, Russian, Turkish, Arabic, Hindi, Japanese, Korean, Chinese (Simplified), Vietnamese, Thai, Indonesian, Swedish, Malay

SECTION: Data Sources

All half-life and pharmacokinetic data is sourced from peer-reviewed literature (PubMed, PMC, FDA labels, NEJM). Full citations available at https://calcmypeptide.com/en/ai

SECTION: Contact

contact@calcmypeptide.com

SECTION: Organization

Kymata Labs LLC — https://kymatalabs.com

SECTION: Related Tools by Kymata Labs

- CalcMyCompound: https://calcmycompound.com — Free compound interest calculator
- PercentEase: https://percentease.com — Free percentage calculator
- BmiCalcNow: https://bmicalcnow.com — Free BMI calculator

SECTION: Peptide Database

PEPTIDE: BPC-157
Full name: Body Protection Compound-157
Category: Recovery
Half-life: <30 min (PMC9794587)
Typical dose: 200-800 mcg/day SC
Common vial sizes: 5 mg, 10 mg
Reconstitution example: 5 mg + 2 mL BAC water = 2.5 mg/mL = 25 mcg/unit (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 21-28 days
Page: https://calcmypeptide.com/en/peptides/bpc-157
Source: https://pmc.ncbi.nlm.nih.gov/articles/PMC9794587/

PEPTIDE: TB-500
Full name: Thymosin Beta-4 Fragment
Category: Recovery
Half-life: 1.5 - 3 h (Paragon Sports Medicine, Peptide Biologix)
Typical dose: 2 - 5 mg twice weekly (loading), 2 mg weekly (maintenance)
Common vial sizes: 2 mg, 5 mg, 10 mg
Reconstitution example: 5 mg + 2 mL BAC water = 2.5 mg/mL = 25 mcg/unit (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 21-28 days
Page: https://calcmypeptide.com/en/peptides/tb-500
Source: https://www.paragonsportsmedicine.com/

PEPTIDE: Semaglutide
Full name: Semaglutide (GLP-1 Receptor Agonist)
Category: GLP-1 / Incretin Agonist
Half-life: ~7 days (PubMed 29915923)
Typical dose: 0.25 - 2.4 mg weekly (Wegovy escalation)
Common vial sizes: 3 mg, 5 mg, 10 mg (compounded)
Reconstitution example: 5 mg + 2 mL BAC water = 2.5 mg/mL; at 0.25 mg dose = 10 units (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 28 days
Page: https://calcmypeptide.com/en/peptides/semaglutide
Source: https://pubmed.ncbi.nlm.nih.gov/29915923/

PEPTIDE: Tirzepatide
Full name: Tirzepatide (GLP-1/GIP Dual Agonist)
Category: GLP-1 / Incretin Agonist
Half-life: ~5 days (FDA NDA 215866)
Typical dose: 2.5 - 15 mg weekly (Mounjaro escalation)
Common vial sizes: 5 mg, 10 mg, 15 mg, 30 mg (compounded)
Reconstitution example: 10 mg + 2 mL BAC water = 5 mg/mL; at 2.5 mg dose = 50 units (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 28 days
Page: https://calcmypeptide.com/en/peptides/tirzepatide
Source: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2022/215866Orig1s000ClinPharmR.pdf

PEPTIDE: Retatrutide
Full name: Retatrutide / LY3437943 (GLP-1/GIP/Glucagon Triple Agonist)
Category: GLP-1 / Incretin Agonist
Half-life: ~6 days (NEJM 2023)
Typical dose: 1 - 12 mg weekly (Phase II escalation)
Common vial sizes: 5 mg, 10 mg, 15 mg (compounded)
Reconstitution example: 10 mg + 2 mL BAC water = 5 mg/mL; at 4 mg dose = 80 units (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 28 days
Page: https://calcmypeptide.com/en/peptides/retatrutide
Source: https://www.nejm.org/doi/full/10.1056/NEJMoa2301972

PEPTIDE: CJC-1295 with DAC
Full name: CJC-1295 with Drug Affinity Complex
Category: GH Secretagogue
Half-life: 5.8 - 8.1 days (PubMed 16352683)
Typical dose: 1 - 2 mg weekly
Common vial sizes: 2 mg, 5 mg
Reconstitution example: 2 mg + 2 mL BAC water = 1 mg/mL = 10 mcg/unit (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 21 days
Page: https://calcmypeptide.com/en/peptides/cjc-1295-dac
Source: https://pubmed.ncbi.nlm.nih.gov/16352683/

PEPTIDE: CJC-1295 without DAC (Mod GRF 1-29)
Full name: Modified Growth Releasing Factor 1-29
Category: GH Secretagogue
Half-life: ~30 min (BOC Sciences)
Typical dose: 100 - 300 mcg 1-3x daily
Common vial sizes: 2 mg, 5 mg
Reconstitution example: 2 mg + 2 mL BAC water = 1 mg/mL = 10 mcg/unit (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 21 days
Page: https://calcmypeptide.com/en/peptides/cjc-1295-no-dac
Source: https://www.bocsci.com/resources/what-is-cjc1295-without-dac.html

PEPTIDE: Ipamorelin
Full name: Ipamorelin (Growth Hormone Secretagogue)
Category: GH Secretagogue
Half-life: ~2 h (BodySpec, Envizion Medical)
Typical dose: 100 - 300 mcg 1-3x daily
Common vial sizes: 2 mg, 5 mg
Reconstitution example: 5 mg + 2 mL BAC water = 2.5 mg/mL = 25 mcg/unit (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 21 days
Page: https://calcmypeptide.com/en/peptides/ipamorelin
Source: https://www.bodyspec.com/blog/post/cjc1295_ipamorelin_research_safety_and_results

PEPTIDE: Tesamorelin
Full name: Tesamorelin (GHRH Analog)
Category: GH Secretagogue
Half-life: 26 - 38 min (DrugBank DB08869)
Typical dose: 1.4 mg daily (FDA approved for lipodystrophy)
Common vial sizes: 1 mg, 2 mg (lyophilized)
Reconstitution example: 2 mg + 2 mL BAC water = 1 mg/mL; at 1.4 mg dose = 140 units
Storage: Refrigerate 2-8°C, use within 14 days
Page: https://calcmypeptide.com/en/peptides/tesamorelin
Source: https://go.drugbank.com/drugs/DB08869

PEPTIDE: Sermorelin
Full name: Sermorelin Acetate (GHRH 1-29)
Category: GH Secretagogue
Half-life: 10 - 20 min
Typical dose: 200 - 500 mcg daily before bedtime
Common vial sizes: 3 mg, 6 mg, 9 mg, 15 mg
Reconstitution example: 6 mg + 3 mL BAC water = 2 mg/mL = 20 mcg/unit (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 21 days
Page: https://calcmypeptide.com/en/peptides/sermorelin
Source: General compounding pharmacology literature

PEPTIDE: Hexarelin
Full name: Hexarelin (Growth Hormone Releasing Hexapeptide)
Category: GH Secretagogue
Half-life: 55 - 70 min
Typical dose: 100 - 200 mcg 1-2x daily
Common vial sizes: 2 mg, 5 mg
Reconstitution example: 2 mg + 2 mL BAC water = 1 mg/mL = 10 mcg/unit (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 21 days
Page: https://calcmypeptide.com/en/peptides/hexarelin
Source: PubMed GHRP hexapeptide PK studies

PEPTIDE: GHRP-2
Full name: Growth Hormone Releasing Peptide-2
Category: GH Secretagogue
Half-life: 25 - 30 min
Typical dose: 100 - 300 mcg 1-3x daily
Common vial sizes: 5 mg, 10 mg
Reconstitution example: 5 mg + 2 mL BAC water = 2.5 mg/mL = 25 mcg/unit (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 21 days
Page: https://calcmypeptide.com/en/peptides/ghrp-2
Source: General pharmacology literature

PEPTIDE: GHRP-6
Full name: Growth Hormone Releasing Peptide-6
Category: GH Secretagogue
Half-life: 20 - 30 min
Typical dose: 100 - 300 mcg 1-3x daily
Common vial sizes: 5 mg, 10 mg
Reconstitution example: 5 mg + 2 mL BAC water = 2.5 mg/mL = 25 mcg/unit (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 21 days
Page: https://calcmypeptide.com/en/peptides/ghrp-6
Source: General pharmacology literature

PEPTIDE: GHK-Cu
Full name: Copper Peptide GHK-Cu
Category: Skin / Tanning
Half-life: 0.5 - 4 h (PMC4180391, Paragon Sports Medicine)
Typical dose: 1 - 3 mg daily (SC) or topical
Common vial sizes: 5 mg, 10 mg, 50 mg
Reconstitution example: 5 mg + 2 mL BAC water = 2.5 mg/mL = 25 mcg/unit (1 mL syringe)
Storage: Refrigerate 2-8°C, protect from light, use within 21 days
Page: https://calcmypeptide.com/en/peptides/ghk-cu
Source: https://pmc.ncbi.nlm.nih.gov/articles/PMC4180391/

PEPTIDE: Epitalon
Full name: Epitalon / Epithalon (Ala-Glu-Asp-Gly)
Category: Longevity / Telomere
Half-life: Not formally published; estimated minutes (small tetrapeptide)
Typical dose: 5 - 10 mg daily SC for 10-20 days, repeat every 3-6 months
Common vial sizes: 10 mg, 20 mg, 50 mg
Reconstitution example: 10 mg + 2 mL BAC water = 5 mg/mL; at 5 mg dose = 100 units (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 21 days
Page: https://calcmypeptide.com/en/peptides/epitalon
Source: https://pmc.ncbi.nlm.nih.gov/articles/PMC11943447/

PEPTIDE: MOTS-c
Full name: Mitochondrial Open Reading Frame of the 12S rRNA Type-c
Category: Mitochondrial
Half-life: Short, not precisely published; low bioavailability
Typical dose: 5 - 10 mg 3-5x per week
Common vial sizes: 5 mg, 10 mg
Reconstitution example: 10 mg + 2 mL BAC water = 5 mg/mL; at 5 mg dose = 100 units (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 14 days
Page: https://calcmypeptide.com/en/peptides/mots-c
Source: https://pmc.ncbi.nlm.nih.gov/articles/PMC9905433/

PEPTIDE: SS-31 (Elamipretide)
Full name: SS-31 / Elamipretide / Bendavia (D-Arg-Dmt-Lys-Phe-NH2)
Category: Mitochondrial
Half-life: ~2 h SC (PMC9192202); ~4 h IV in dogs (AlzDiscovery)
Typical dose: 0.1 - 1 mg/kg daily
Common vial sizes: 5 mg, 10 mg
Reconstitution example: 5 mg + 2 mL BAC water = 2.5 mg/mL = 25 mcg/unit (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 14 days
Page: https://calcmypeptide.com/en/peptides/ss-31
Source: https://pmc.ncbi.nlm.nih.gov/articles/PMC9192202/

PEPTIDE: Selank
Full name: Selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro)
Category: Cognitive / Nootropic
Half-life: Minutes (short, tuftsin analog); anxiolytic effect lasts hours
Typical dose: 250 - 500 mcg 2-3x daily intranasal or SC
Common vial sizes: 5 mg
Reconstitution example: 5 mg + 2 mL BAC water = 2.5 mg/mL = 25 mcg/unit (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 21 days
Page: https://calcmypeptide.com/en/peptides/selank
Source: https://pmc.ncbi.nlm.nih.gov/articles/PMC4757669/

PEPTIDE: Semax
Full name: Semax (Met-Glu-His-Phe-Pro-Gly-Pro)
Category: Cognitive / Nootropic
Half-life: Minutes (very short); therapeutic effect 20-24 h
Typical dose: 200 - 500 mcg daily intranasal
Common vial sizes: 5 mg
Reconstitution example: 5 mg + 2 mL BAC water = 2.5 mg/mL = 25 mcg/unit (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 21 days
Page: https://calcmypeptide.com/en/peptides/semax
Source: Semantic Scholar PDF

PEPTIDE: PT-141 (Bremelanotide)
Full name: Bremelanotide / PT-141 (Melanocortin Receptor Agonist)
Category: Sexual Health
Half-life: 2.7 h (range 1.9 - 4.0 h) (FDA NDA 210557)
Typical dose: 1.75 mg SC as needed (FDA approved dose)
Common vial sizes: 2 mg, 5 mg, 10 mg
Reconstitution example: 10 mg + 2 mL BAC water = 5 mg/mL; at 1.75 mg dose = 35 units (0.5 mL syringe)
Storage: Refrigerate 2-8°C, use within 21 days
Page: https://calcmypeptide.com/en/peptides/pt-141
Source: https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/210557s000lbl.pdf

PEPTIDE: Kisspeptin-10
Full name: Kisspeptin-10 (KP-10)
Category: Sexual Health
Half-life: ~4 min (very short native peptide)
Typical dose: 1 - 10 nmol/kg IV (research setting)
Common vial sizes: 1 mg, 5 mg
Reconstitution example: 1 mg + 1 mL BAC water = 1 mg/mL = 10 mcg/unit (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 14 days
Page: https://calcmypeptide.com/en/peptides/kisspeptin-10
Source: General endocrinology literature

PEPTIDE: Gonadorelin
Full name: Gonadorelin (GnRH Analog)
Category: Sexual Health
Half-life: 2 - 4 min
Typical dose: 100 - 500 mcg SC 2-3x weekly
Common vial sizes: 2 mg, 5 mg
Reconstitution example: 2 mg + 2 mL BAC water = 1 mg/mL = 10 mcg/unit (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 21 days
Page: https://calcmypeptide.com/en/peptides/gonadorelin
Source: FDA prescribing information

PEPTIDE: DSIP
Full name: Delta Sleep-Inducing Peptide
Category: Sleep
Half-life: 7 - 8 min IV (European Journal of Anaesthesiology 2001)
Typical dose: 100 - 300 mcg SC before bedtime
Common vial sizes: 2 mg, 5 mg
Reconstitution example: 5 mg + 2 mL BAC water = 2.5 mg/mL = 25 mcg/unit (1 mL syringe)
Storage: Refrigerate 2-8°C, use within 21 days
Page: https://calcmypeptide.com/en/peptides/dsip
Source: https://journals.lww.com/ejanaesthesiology/fulltext/2001/07000/delta_sleep_inducing_peptide.1.aspx

PEPTIDE: AOD-9604
Full name: AOD-9604 (Anti-Obesity Drug / hGH Fragment 177-191)
Category: Fat Loss
Half-life: 3 - 4 min (JOFEM, Paragon Sports Medicine)
Typical dose: 300 mcg daily morning on empty stomach
Common vial sizes: 5 mg, 10 mg
Reconstitution example: 5 mg + 2 mL BAC water = 2.5 mg/mL = 25 mcg/unit (1 mL syringe); at 300 mcg dose = 12 units
Storage: Refrigerate 2-8°C, use within 21 days
Page: https://calcmypeptide.com/en/peptides/aod-9604
Source: https://jofem.org/index.php/jofem/article/view/213/278

PEPTIDE: Melanotan II
Full name: Melanotan II (Synthetic alpha-MSH Analog)
Category: Skin / Tanning
Half-life: Absorption t-half 0.07 - 0.79 h; clears within hours (PubMed 9113347)
Typical dose: 0.25 - 0.5 mg SC every other day (tanning protocol)
Common vial sizes: 10 mg
Reconstitution example: 10 mg + 2 mL BAC water = 5 mg/mL; at 0.5 mg dose = 10 units (1 mL syringe)
Storage: Refrigerate 2-8°C, protect from light, use within 28 days
Page: https://calcmypeptide.com/en/peptides/melanotan-ii
Source: https://pubmed.ncbi.nlm.nih.gov/9113347/

SECTION: Blog Summaries

BLOG: How to Reconstitute Peptides: A Step-by-Step Guide
URL: https://calcmypeptide.com/en/blog/how-to-reconstitute-peptides
SUMMARY: Learn how to reconstitute peptides with bacteriostatic water, calculate concentration, and measure the correct dose in syringe units. Covers supplies needed, step-by-step process, storage guidelines, and common mistakes.

BLOG: Semaglutide Dose Calculator: How to Measure Your Weekly Injection
URL: https://calcmypeptide.com/en/blog/semaglutide-dose-calculator
SUMMARY: Calculate semaglutide doses in insulin syringe units and understand the Wegovy and Ozempic dose escalation schedules. Includes worked examples for compounded semaglutide reconstitution.

BLOG: Tirzepatide vs Semaglutide: Dosing, Efficacy and Half-Life Compared
URL: https://calcmypeptide.com/en/blog/tirzepatide-vs-semaglutide
SUMMARY: Side-by-side comparison of tirzepatide and semaglutide covering mechanisms, half-lives, dose schedules, and clinical weight loss data. Includes introduction to retatrutide as a next-generation triple agonist.

BLOG: BPC-157 Dosage Guide: How Much to Take and How to Calculate
URL: https://calcmypeptide.com/en/blog/bpc-157-dosage-guide
SUMMARY: Complete BPC-157 dosing guide with reconstitution examples, syringe unit calculations, and stacking protocols with TB-500. Covers vial duration and cost per dose.

BLOG: Peptide Half-Life Explained: Why It Matters for Your Dosing Schedule
URL: https://calcmypeptide.com/en/blog/peptide-half-life-explained
SUMMARY: Explains the concept of half-life with a comparison chart of 15+ popular peptides. Covers how half-life determines dosing frequency and what 5 half-lives means for clearance.

BLOG: How Many Units in a Syringe? Insulin Syringe Guide for Peptides
URL: https://calcmypeptide.com/en/blog/insulin-syringe-units-peptides
SUMMARY: Guide to insulin syringe sizes (0.3 mL, 0.5 mL, 1.0 mL), tick mark reading, and needle gauge selection for subcutaneous peptide injections. Explains how syringe size affects dose accuracy.

BLOG: Retatrutide: The Triple Agonist GLP-1 Peptide — Dosing and PK Guide
URL: https://calcmypeptide.com/en/blog/retatrutide-triple-agonist-guide
SUMMARY: Comprehensive guide to retatrutide covering its triple agonist mechanism, 6-day half-life, Phase II dose escalation, and comparison to semaglutide and tirzepatide. Includes reconstitution calculations.

BLOG: Epitalon and Longevity Peptides: Telomerase, Dosing and What the Science Says
URL: https://calcmypeptide.com/en/blog/epitalon-longevity-peptides
SUMMARY: Explores epitalon telomerase activation based on Khavinson bioregulator research with dosing protocols. Also covers MOTS-c and SS-31 as complementary longevity and mitochondrial peptides.

BLOG: How Long Does a Peptide Vial Last? Cost-Per-Dose Calculator Guide
URL: https://calcmypeptide.com/en/blog/how-long-does-peptide-vial-last
SUMMARY: Formulas and examples for calculating vial duration and cost per dose. Addresses the 21-28 day shelf life constraint and strategies for optimizing water volume.

BLOG: Bacteriostatic Water for Peptides: Everything You Need to Know
URL: https://calcmypeptide.com/en/blog/bacteriostatic-water-peptides
SUMMARY: Everything about bacteriostatic water including composition, why it is preferable to sterile water, how much to add, storage guidelines, and sourcing options. Includes FAQ on reuse and safety.

BLOG: What Is the Wolverine Stack? BPC-157 + TB-500 Dosing, Reconstitution & Calculator Guide
URL: https://calcmypeptide.com/en/blog/wolverine-stack-peptide-guide
SUMMARY: The Wolverine Stack combines BPC-157 and TB-500 for synergistic tissue repair. Covers the GLOW and KLOW protocol variants, reconstitution math for each peptide, blend-stack calculator usage, and a comparison of which stack variant suits injury type.

BLOG: FDA Peptide Reclassification 2026: What It Means for BPC-157, TB-500 & Compounded Peptides
URL: https://calcmypeptide.com/en/blog/fda-peptide-reclassification-2026
SUMMARY: Explains the FDA's 2026 503A/503B reclassification framework, which peptides moved to Category 2 (requiring PCAB accreditation), and which remain accessible. Covers BPC-157, TB-500, ipamorelin, and GLP-1 agonists. Includes an interactive infographic and citation-backed FAQ.

BLOG: MOTS-c: The Mitochondrial Peptide That Mimics Exercise at the Cellular Level
URL: https://calcmypeptide.com/en/blog/mots-c-exercise-mimetic-peptide
SUMMARY: MOTS-c is encoded in the 12S rRNA mitochondrial gene and activates AMPK, GLUT4, and PGC-1α to replicate exercise-induced metabolic adaptations. Covers dose protocols (5-10 mg 3-5x/week), clinical evidence, and comparison to SS-31 for longevity stacking.

BLOG: Peptides for Gut Health: How BPC-157 and KPV Heal the Intestinal Lining
URL: https://calcmypeptide.com/en/blog/peptides-gut-health-bpc-157-kpv
SUMMARY: BPC-157 upregulates VEGF and promotes mucosal angiogenesis; KPV (Lys-Pro-Val) blocks NF-κB inflammatory signaling. Covers their combined dosing protocol for IBS, IBD, and leaky gut, with evidence from animal and in vitro studies.

BLOG: GHK-Cu for Hair Growth and Skin: Copper Peptide Mechanisms, Evidence, and Dosing
URL: https://calcmypeptide.com/en/blog/ghk-cu-hair-growth-skin
SUMMARY: GHK-Cu (glycyl-L-histidyl-L-lysine copper) stimulates collagen types I/III, activates fibroblasts, and promotes anagen-phase hair follicle cycling. Covers topical vs. injectable delivery, clinical evidence (PMC4180391), and dosing protocols (1-3 mg/day SC).

BLOG: Compounded Semaglutide vs Wegovy vs Rybelsus: Cost, Bioavailability, and Dosing Compared
URL: https://calcmypeptide.com/en/blog/compounded-semaglutide-vs-wegovy-vs-oral
SUMMARY: Side-by-side comparison of compounded injectable semaglutide (100% bioavailability SC), Wegovy/Ozempic pens, and oral Rybelsus (~1% bioavailability requiring 14 mg to deliver ~0.14 mg systemic exposure). Covers cost breakdown ($300-800/month vs $1,300+), dose conversion math, and 2026 FDA shortage status.

BLOG: Retatrutide Phase 3 TRIUMPH Trial Update 2026: Weight Loss Data, Timeline & Access
URL: https://calcmypeptide.com/en/blog/retatrutide-phase-3-update-2026
SUMMARY: Covers Phase 3 TRIUMPH trial design (NCT04881760), interim data showing 24.2% body weight reduction at 48 weeks, timeline to FDA submission (expected late 2026), and current compounded access options through 503B pharmacies.

BLOG: Are Peptides Safe? Risks, Purity Standards, and What the Evidence Actually Shows
URL: https://calcmypeptide.com/en/blog/are-peptides-safe-risks-evidence
SUMMARY: Honest safety analysis distinguishing FDA-approved peptides (semaglutide, tesamorelin, PT-141) from research-grade compounds. Covers HPLC purity thresholds (≥98% standard), common contamination risks, injection site adverse events, and harm-reduction protocols including CoA verification.

BLOG: Oral Peptides vs Injectable: Bioavailability, Absorption Science, and What Actually Works
URL: https://calcmypeptide.com/en/blog/oral-peptides-vs-injectable-bioavailability
SUMMARY: Explains why most peptides are destroyed by gastric proteases (pepsin, trypsin) before absorption. Reviews bioavailability by delivery route: SC injection (~100%), intranasal (~10-30%, e.g. selank/semax), sublingual (~5-15%), oral (~0-1% for most). Semaglutide oral (Rybelsus) as the exception enabled by SNAC absorption enhancer.

BLOG: Sermorelin + Ipamorelin vs MK-677: GH Optimization Head-to-Head Comparison
URL: https://calcmypeptide.com/en/blog/sermorelin-ipamorelin-vs-mk-677
SUMMARY: Compares the injectable sermorelin (GHRH analog, 10-20 min half-life) + ipamorelin (GHRP, 2 h half-life) stack against oral MK-677 ibutamoren (ghrelin mimetic, 24 h half-life). Covers pulsatile vs. sustained GH release, IGF-1 elevation data, side effect profiles (water retention with MK-677), and cost-per-month analysis.

BLOG: BPC-157 vs TB-500: Dual Recovery Peptide Comparison
URL: https://calcmypeptide.com/en/blog/bpc-157-vs-tb-500
SUMMARY: Head-to-head comparison of BPC-157 (localized healing via VEGF/FGF) versus TB-500 (systemic recovery via actin regulation). Covers mechanisms, half-lives, dosing protocols, injection site preferences, and when to stack both as the Wolverine protocol.

BLOG: Ipamorelin + CJC-1295 Stack: The Gold Standard GH Secretagogue Combo
URL: https://calcmypeptide.com/en/blog/ipamorelin-cjc-1295-stack
SUMMARY: GHRP + GHRH synergy explained — ipamorelin initiates the GH pulse while CJC-1295 (no DAC) amplifies it. Covers optimal timing (empty stomach, before bed), dosing (100-300 mcg each), and expected GH output.

BLOG: Peptide Storage Guide: Temperature, Shelf Life, and Stability
URL: https://calcmypeptide.com/en/blog/peptide-storage-guide
SUMMARY: Complete peptide storage matrix covering lyophilized powder (-20°C for years), reconstituted solution (2-8°C for 28 days), and BAC water (room temp for 28 days). Includes degradation signs and when to discard.

BLOG: Peptide Purity Testing: How to Read HPLC and CoA Reports
URL: https://calcmypeptide.com/en/blog/peptide-purity-testing
SUMMARY: Guide to reading Certificates of Analysis including HPLC purity percentage (≥98% standard), mass spectrometry molecular weight verification, and lot-specific batch numbers. Covers red flags for fraudulent CoAs.

BLOG: Peptide Side Effects by Category: What to Expect and When to Worry
URL: https://calcmypeptide.com/en/blog/peptide-side-effects-guide
SUMMARY: Side effect comparison matrix organized by peptide category: GLP-1 (GI issues), GH secretagogues (water retention, carpal tunnel), recovery (injection site reactions), cognitive (nasal irritation), and longevity peptides.

BLOG: Tesamorelin Visceral Fat Guide: FDA-Approved GHRH for Body Composition
URL: https://calcmypeptide.com/en/blog/tesamorelin-visceral-fat-guide
SUMMARY: Tesamorelin is the only FDA-approved GHRH analog for visceral fat reduction. Covers mechanism (GHRH receptor → pulsatile GH → selective visceral lipolysis via hepatic IGF-1), clinical data from LIPO-010/012 trials (18% VAT reduction), and dosing protocols (1.4 mg daily or off-label 1-2 mg).

BLOG: CJC-1295 DAC vs No DAC: Which GHRH Analog Is Better?
URL: https://calcmypeptide.com/en/blog/cjc-1295-dac-vs-no-dac
SUMMARY: The DAC modification extends half-life from 30 minutes to 8 days but eliminates physiological pulsatile GH release. Compares pharmacokinetics, GH pulse patterns, dosing frequency, and clinical implications of each variant.

BLOG: Ipamorelin Dosage and Timing: Complete Protocol Guide
URL: https://calcmypeptide.com/en/blog/ipamorelin-dosage-timing
SUMMARY: Detailed ipamorelin protocol covering 200-300 mcg dose range, 3 optimal daily injection windows (morning fasted, mid-afternoon, pre-bed), fasting requirements (2 hours before/30 minutes after), and reconstitution calculations.

BLOG: Hexarelin vs Ipamorelin: Which GHRP Is Right for You?
URL: https://calcmypeptide.com/en/blog/hexarelin-vs-ipamorelin
SUMMARY: Hexarelin produces the strongest GH pulse of any GHRP but elevates cortisol and prolactin. Ipamorelin is the cleanest option with minimal off-target effects. Covers desensitization risk (hexarelin > 4 weeks), selectivity profiles, and which to choose based on goals.

BLOG: Tesamorelin vs Ipamorelin: GHRH vs GHRP — Different Mechanisms Explained
URL: https://calcmypeptide.com/en/blog/tesamorelin-vs-ipamorelin
SUMMARY: Tesamorelin (GHRH) amplifies existing GH pulses; ipamorelin (GHRP) initiates new ones. Different receptor targets (GHRH-R vs GHS-R), synergistic when stacked, and comparison of clinical evidence levels. Includes dosing for both solo and combined protocols.

BLOG: Semaglutide vs Tirzepatide vs Retatrutide: 2026 GLP-1 Comparison
URL: https://calcmypeptide.com/en/blog/semaglutide-vs-tirzepatide-vs-retatrutide
SUMMARY: Three-way comparison of single agonist (semaglutide, GLP-1 only), dual agonist (tirzepatide, GLP-1+GIP), and triple agonist (retatrutide, GLP-1+GIP+glucagon). Covers weight loss data (15% → 20% → 24%), receptor profiles, FDA status, and dosing schedules.

BLOG: BPC-157 Oral vs Injectable: Which Delivery Method Works?
URL: https://calcmypeptide.com/en/blog/bpc-157-oral-vs-injectable
SUMMARY: Oral BPC-157 provides local GI tract healing with ~5-10% systemic bioavailability. Injectable SubQ delivers ~90%+ systemic exposure for musculoskeletal targets. Covers oral capsule stability (gastric resistance), dosing equivalents, and when to use each route.

BLOG: MK-677 vs HGH: Oral Growth Hormone Secretagogue vs Injectable
URL: https://calcmypeptide.com/en/blog/mk-677-vs-hgh
SUMMARY: MK-677 (ibutamoren) is an oral ghrelin mimetic with 24-hour continuous GH elevation. Injectable HGH provides precise pulsatile dosing. Covers cost ($30-50/month vs $500-2000/month), insulin resistance risk, appetite effects, and long-term safety profiles.

BLOG: FDA Category 2 Peptide List 2026: Complete Status and Access Guide
URL: https://calcmypeptide.com/en/blog/fda-category-2-peptide-list-2026
SUMMARY: All 19 Category 2 peptides mapped with current status, likelihood of Category 1 reinstatement, and access pathways. Covers BPC-157, TB-500, thymosin alpha-1, epithalon, and other restricted peptides with analysis of the 2026 FDA review timeline.

BLOG: 503A vs 503B Compounding Pharmacies: Quality, Oversight, and What to Know
URL: https://calcmypeptide.com/en/blog/compounding-pharmacy-503a-503b
SUMMARY: 503B outsourcing facilities provide FDA-inspected cGMP manufacturing; 503A traditional pharmacies operate under state pharmacy boards with lower federal oversight. Covers testing requirements, batch size limits, quality controls, and how to verify a pharmacy's status.

BLOG: Are Research Peptides Legal? The Regulatory Gray Zone Explained
URL: https://calcmypeptide.com/en/blog/are-research-peptides-legal
SUMMARY: Research peptides exist in a regulatory gray zone: legal to purchase, labeled "not for human consumption," with FDA enforcement focused on vendors, not buyers. Covers the research chemical exemption, legal risks, international differences, and practical considerations.

BLOG: Compounded Semaglutide vs Brand Wegovy: Cost, Quality, and Safety
URL: https://calcmypeptide.com/en/blog/semaglutide-compounding-vs-brand
SUMMARY: Compounded semaglutide from 503B facilities provides similar efficacy at ~20% of brand cost. Covers semaglutide base vs sodium salt form concerns, pharmacy verification checklist, quality assurance steps, and the FDA shortage status impact on compounding legality.

BLOG: PT-141 Bremelanotide: The Brain-Based Libido Peptide
URL: https://calcmypeptide.com/en/blog/pt-141-bremelanotide-libido
SUMMARY: PT-141 (Vyleesi) activates MC4R melanocortin receptors in the hypothalamus to increase sexual desire — fundamentally different from PDE5 inhibitors that target blood flow. Covers FDA approval for HSDD, dosing (1.75 mg SC), side effects (nausea, facial flushing), and off-label male use.

BLOG: Melanotan II Tanning Peptide: Mechanism, Risks, and Reality
URL: https://calcmypeptide.com/en/blog/melanotan-2-tanning-peptide
SUMMARY: MT-II activates MC1R on melanocytes to produce real eumelanin — but also activates MC3R/MC4R causing nausea, libido changes, and mole darkening. Covers dosing protocols (loading 0.25-0.5 mg, maintenance), dermatological risks, and mole monitoring requirements.

BLOG: Collagen Peptides vs Injectable GHK-Cu: Oral Supplements vs Peptide Injections
URL: https://calcmypeptide.com/en/blog/collagen-peptides-vs-injectable
SUMMARY: Oral hydrolyzed collagen provides indirect fibroblast signaling (7-15% skin improvement). Injectable GHK-Cu provides direct activation via integrin receptors for more potent dermal effects. Compares mechanisms, clinical evidence, cost, and practical protocols.

BLOG: GHK-Cu vs Retinol: Inside-Out vs Outside-In Anti-Aging
URL: https://calcmypeptide.com/en/blog/ghk-cu-vs-retinol
SUMMARY: GHK-Cu rebuilds from within via fibroblast activation (TGF-β, collagen synthesis). Retinol resurfaces from outside via RAR nuclear receptor keratinocyte turnover. Compares evidence bases, delivery methods, and makes the case for using both together.

BLOG: Peptide Contamination Testing: How to Verify What's in Your Vial
URL: https://calcmypeptide.com/en/blog/peptide-contamination-testing-guide
SUMMARY: Five must-have elements on every CoA: HPLC purity ≥95%, MS molecular weight match, lot-specific number, recent test date, and independent lab name. Covers third-party testing services, common contaminants (endotoxins, heavy metals, residual solvents), and warning signs.

BLOG: Peptide Injection Site Reactions: Types, Causes, and When to Worry
URL: https://calcmypeptide.com/en/blog/peptide-injection-site-reactions
SUMMARY: Most injection site reactions are mild histamine responses (red, itchy, resolve in hours). Covers histamine-mediated vs contamination-induced vs allergic reactions, visual identification, prevention strategies (warming, rotation), and red flags requiring medical attention.

BLOG: Peptide Drug Interactions: What Medications to Watch When Using Peptides
URL: https://calcmypeptide.com/en/blog/peptide-drug-interactions
SUMMARY: GLP-1s delay oral medication absorption (especially narrow therapeutic index drugs). GH peptides increase insulin resistance. Healing peptides may affect anticoagulation. Immunomodulatory peptides interact with transplant drugs. Covers the pharmacology of each interaction class.

BLOG: SS-31 (Elamipretide) and Mitochondrial Longevity: Cardiolipin Binding Explained
URL: https://calcmypeptide.com/en/blog/ss-31-elamipretide-mitochondrial
SUMMARY: SS-31 binds cardiolipin on the inner mitochondrial membrane, stabilizing ETC supercomplexes to restore efficient electron transfer and reduce ROS. Covers PROGRESS-HF and EMBRACE-HF trial data, Barth syndrome breakthrough therapy designation, and dosing (40 mg/day in trials, 5-20 mg/day in optimization).

BLOG: Methylene Blue & NAD+ Peptides: The Mitochondrial Enhancement Stack
URL: https://calcmypeptide.com/en/blog/methylene-blue-nad-mitochondrial-stack
SUMMARY: Three mechanisms targeting mitochondrial dysfunction: SS-31 (structural repair via cardiolipin), NAD+ precursors NMN/NR (fuel supply for ETC and sirtuins), and methylene blue (alternative electron carrier bypassing damaged ETC components). Covers dosing for each, serotonin syndrome warning with SSRIs, and monitoring protocols.

BLOG: Thymosin Alpha-1: The Most Clinically Validated Immune Peptide
URL: https://calcmypeptide.com/en/blog/thymosin-alpha-1-immune-peptide
SUMMARY: Tα1 is approved in 35+ countries (Zadaxin) for hepatitis B/C and cancer immunotherapy. 100+ clinical trials. Mechanism: TLR2/TLR9 activation, T-cell maturation, Th1/Th2 balance. Covers hepatitis, cancer adjunct, sepsis, and vaccine enhancement evidence. Standard dose 1.6 mg SC 2x/week. FDA Category 2 obstacle discussed.

BLOG: Khavinson Bioregulator Peptides: Epithalon, Thymalin, and Organ-Specific Gene Regulation
URL: https://calcmypeptide.com/en/blog/khavinson-bioregulator-peptides
SUMMARY: Ultra-short peptides (2-4 amino acids) targeting organ-specific gene expression. Epithalon (Ala-Glu-Asp-Gly) activates telomerase, extending fibroblast lifespan by 44% in vitro and rodent lifespan by 14-31%. Covers Khavinson's 12-year human study (29% mortality reduction), cycling protocols (5-10 mg daily for 10-20 days), and critical analysis of evidence quality.

BLOG: Peptide Half-Life Calculator Guide: How to Design Your Dosing Protocol
URL: https://calcmypeptide.com/en/blog/peptide-half-life-calculator-guide
SUMMARY: Half-life determines injection frequency, steady-state timing, and peak-trough fluctuation. Explains first-order elimination kinetics, the 5-half-life rule for steady state, and how to use the CalcMyPeptide half-life visualizer. Includes a cheat sheet with half-lives for 25+ peptides organized by category.

BLOG: Subcutaneous vs Intramuscular Injection: Anatomy, Absorption, and Best Practices
URL: https://calcmypeptide.com/en/blog/subcutaneous-vs-intramuscular-injection
SUMMARY: SubQ deposits into fat (slow absorption, broader pulse, 27-31 gauge needle). IM reaches muscle (fast absorption, sharp peak, 22-25 gauge needle). Most peptides use SubQ for physiological GH pulsing. Covers injection technique, needle selection, site rotation, and common errors to avoid.

BLOG: Peptide Storage and Stability: How to Keep Your Peptides Potent
URL: https://calcmypeptide.com/en/blog/peptide-storage-stability-guide
SUMMARY: Four degradation pathways (hydrolysis, oxidation, deamidation, aggregation) explain why storage conditions matter. Lyophilized powder stable for 12-24 months at 2-8°C, years at -20°C. Reconstituted solutions stable for 21-28 days at 2-8°C only. Covers BAC water sourcing, reconstitution technique, and visual signs of degradation.

BLOG: Pinealon: The Russian Bioregulator for Brain Health
URL: https://calcmypeptide.com/en/blog/pinealon-bioregulator-brain
SUMMARY: Pinealon (Glu-Asp-Arg) is a synthetic tripeptide bioregulator targeting the pineal gland. Covers Khavinson's research on circadian rhythm restoration, melatonin synthesis upregulation, and neuroprotective effects. Includes cycling protocols (200-400 mcg sublingual, 10-20 day courses) and evidence quality assessment.

BLOG: Peptide Stacking 101: How to Combine Peptides Safely and Effectively
URL: https://calcmypeptide.com/en/blog/peptide-stacking-101
SUMMARY: Complete guide to peptide stacking principles: mechanism complementarity, timing optimization, and side effect management. Covers proven stacks by category: Wolverine Protocol (BPC-157+TB-500), GH optimization (ipamorelin+CJC-1295), body composition (semaglutide+tesamorelin), and longevity (epithalon+MOTS-c+SS-31).

BLOG: What Is a Peptide? Amino Acids, Chains & Why Size Matters
URL: https://calcmypeptide.com/en/blog/what-is-a-peptide
SUMMARY: Foundational guide explaining amino acid building blocks, peptide bond formation, and the peptide-protein size spectrum (dipeptides through 191-AA growth hormone). Covers why chain length determines half-life, membrane permeability, immunogenicity, and delivery requirements. Three mechanisms of action: receptor binding, enzymatic modulation, gene expression.

BLOG: Peptide Cycling: Receptor Desensitization Explained
URL: https://calcmypeptide.com/en/blog/peptide-cycling-receptor-desensitization
SUMMARY: Which peptides require cycling and which don't. Hexarelin desensitizes in 4-6 weeks (GHS-R internalization). Ipamorelin shows minimal desensitization. BPC-157 and GLP-1 agonists don't require cycling. Covers cycling protocol design: standard on/off (4-8 weeks), pulse cycling (5 days on/2 off), and course cycling (Khavinson pattern).

BLOG: AOD-9604 Dosage Guide — Fat Loss Mechanism & Calculator
URL: https://calcmypeptide.com/en/blog/aod-9604-dosage-guide
SUMMARY: AOD-9604 (hGH fragment 176-191) dosing for fat loss. 250-500 mcg/day SubQ fasted. Mechanism: β3-AR upregulation for lipolysis without IGF-1 increase. Comparison tables vs full-length hGH and semaglutide. Reconstitution math for 5 mg and 6 mg vials.

BLOG: DSIP Sleep Peptide Dosing Guide
URL: https://calcmypeptide.com/en/blog/dsip-sleep-peptide-dosing-guide
SUMMARY: DSIP (Delta Sleep-Inducing Peptide) normalizes delta-wave sleep architecture. 100-300 mcg SubQ, cumulative effect over 10-14 day courses. 7-8 min half-life but downstream effects persist. Comparison vs melatonin, zolpidem, and Selank.

BLOG: PT-141 (Bremelanotide) Dosage Guide
URL: https://calcmypeptide.com/en/blog/pt-141-bremelanotide-dosage-guide
SUMMARY: PT-141 (Vyleesi) — the only FDA-approved on-demand peptide for HSDD. 1.75 mg SubQ for women, 1-2 mg off-label for men. MC3R/MC4R melanocortin mechanism for desire (not blood flow). Comparison vs Viagra and Cialis.

BLOG: Selank + Semax: The Nootropic Peptide Stack
URL: https://calcmypeptide.com/en/blog/selank-semax-nootropic-stack
SUMMARY: Selank (anxiolytic via GABA gene expression) + Semax (nootropic via BDNF/NGF upregulation). Intranasal dosing 250-500 mcg. Russian-approved pharmaceuticals. Complementary stack for anxiety + focus. No dependency risk.

BLOG: Best Peptides for Women Over 40 — Menopause Guide
URL: https://calcmypeptide.com/en/blog/best-peptides-women-menopause
SUMMARY: Evidence-based peptide guide for perimenopause/menopause. Semaglutide/AOD-9604 for weight, DSIP/Epitalon for sleep, GHK-Cu for skin/hair, PT-141 for libido, BPC-157 for recovery. Best stack table by symptom.

BLOG: Tesofensine Dosage Guide — The Non-GLP-1 Fat Loss Compound
URL: https://calcmypeptide.com/en/blog/tesofensine-dosage-vs-glp1
SUMMARY: Tesofensine triple monoamine reuptake inhibitor, 10.6% weight loss (TIPO-1 trial). 0.25-0.5 mg oral daily. Comparison vs semaglutide and tirzepatide. Cardiovascular considerations (+7.4 bpm HR increase).

BLOG: 5-Amino-1MQ: NNMT Inhibitor for Fat Loss & NAD+
URL: https://calcmypeptide.com/en/blog/5-amino-1mq-fat-loss-nad
SUMMARY: 5-Amino-1MQ blocks NNMT to raise intracellular NAD+ and shift fat metabolism from storage to oxidation. 50-150 mg oral, 1-2x daily. Small molecule (not peptide). Comparison vs NMN and NR for NAD+ boosting.

BLOG: CagriSema: Semaglutide + Cagrilintide Combination Guide
URL: https://calcmypeptide.com/en/blog/cagrisema-semaglutide-cagrilintide-guide
SUMMARY: Novo Nordisk's CagriSema combines semaglutide (GLP-1) + cagrilintide (amylin analog). 22.7% weight loss in REDEFINE 1 trial. Dual satiety pathway mechanism. Comparison vs tirzepatide and retatrutide.

BLOG: Orforglipron: The First Oral Non-Peptide GLP-1
URL: https://calcmypeptide.com/en/blog/orforglipron-oral-glp1-pill-guide
SUMMARY: Eli Lilly's oral non-peptide GLP-1 RA. 14.7% weight loss at 45 mg (ATTAIN trials). No fasting window, room temperature stable. Comparison vs oral semaglutide (Rybelsus), injectable Wegovy, and tirzepatide.

BLOG: GHK-Cu for Hair Growth — Copper Peptide Science & Dosing
URL: https://calcmypeptide.com/en/blog/ghk-cu-hair-growth-copper-peptide
SUMMARY: GHK-Cu tripeptide-copper complex for hair growth and skin rejuvenation. 1-2 mg/day SubQ or topical. Wnt/β-catenin activation, VEGF upregulation, collagen synthesis. Comparison vs minoxidil and finasteride.

BLOG: Peptides and Intermittent Fasting — Timing & Protocol Guide
URL: https://calcmypeptide.com/en/blog/peptides-intermittent-fasting
SUMMARY: Optimal peptide timing around fasting windows. GH secretagogues best fasted (insulin blunts GH by 60-80%). BPC-157 flexible. Semaglutide timing irrelevant. Schedule template for 16:8 protocol. Cross-links to BMI Calc Now.

SECTION: FAQ Compilation

Q: Can you use sterile water instead of bacteriostatic water?
A: Yes, but sterile water has no preservative and is single-use only — use within 24 hours and discard remaining solution.

Q: How long do reconstituted peptides last?
A: 21-28 days when reconstituted with bacteriostatic water and stored at 2-8°C.

Q: What syringe size is best for peptides?
A: A 0.3 mL (30-unit) insulin syringe is best for most peptide doses under 30 units due to its finer graduation marks.

Q: How many units of semaglutide is 0.25 mg?
A: At 5 mg/mL concentration, 0.25 mg = 5 units on a U-100 insulin syringe.

Q: What is the difference between CJC-1295 with DAC and without DAC?
A: CJC-1295 with DAC has a half-life of 5.8-8.1 days (weekly dosing); without DAC the half-life is ~30 minutes (daily dosing).

Q: How do I calculate mcg per unit on an insulin syringe?
A: mcg/unit = (vial_mg × 1000) / (water_mL × syringe_total_units). For example, 5 mg in 2 mL with a 100-unit syringe = 25 mcg/unit.

Q: What does CalcMyPeptide cost?
A: CalcMyPeptide is 100% free. All calculations run in your browser with no account required.

Q: Does CalcMyPeptide store my data?
A: No data leaves your browser. Saved calculations use localStorage only. No server, no database, no tracking (unless you accept analytics cookies).

Q: How many half-lives until a peptide is cleared?
A: After 5 half-lives, >97% of the peptide is eliminated. CalcMyPeptide's Half-Life Visualizer shows this decay curve interactively.