Sleepmaxxing, checked · Sleep stack

The sleep stack, minus the hype

Sleepmaxxing has 100 million TikTok posts and "magnesium for sleep" gets about 110,000 US searches a month. Here is what survives contact with the research, in the order we would add it, with doses.

By CalcMyPeptide editorial team · Medical review pending · Last reviewed · Prices checked Oct 7, 2026

Quick answer

  • Free basics first: fixed wake time, morning light, cool dark room, caffeine before noon, alcohol off as a test.
  • Foundation: magnesium bisglycinate 200–400 mg elemental + L-theanine 200 mg, 30–60 minutes before bed.
  • Add-on: glycine 3 g at bedtime. Optional: standardized saffron extract 28–30 mg in the evening.
  • Melatonin is for timing problems (jet lag, shift work), not nightly use. Skip lithium orotate unless a clinician is monitoring you, and don’t tape your mouth if you snore — get screened for sleep apnea.

Why we wrote this

One of us spent most of a year waking at 3 a.m. Not every night, but often enough that the day after was a write-off. The usual advice came first: no screens, no late coffee, cooler room. It helped a bit.

Then came the supplement aisle and the TikTok stacks. Some of it was useful and some of it was noise. The routine that stuck was short: magnesium glycinate and L-theanine at night, glycine at bedtime, and a saffron extract on stressful weeks. Lithium orotate came and went; we explain below why it is not on our list. This page is that routine, checked against the trials and written so you can test it on yourself one piece at a time.

Step 1: the free basics (they beat every supplement)

  • Same wake-up time every day, weekends included. It anchors everything else.
  • 5–15 minutes of outdoor light within an hour of waking.
  • Bedroom around 60–67°F, dark, quiet. Screens down 45 minutes before bed.
  • Caffeine before noon. Alcohol off for two weeks as a test: it knocks you out and then fragments the second half of the night.
  • If you are awake for more than ~20 minutes, get up, do something dull in dim light, and come back when sleepy. This is the core of CBT-I, the best-studied insomnia treatment.

Step 2: add the stack in this order

  1. Week 1: magnesium + L-theanine. The calm-body, quiet-mind pair. Many people notice a smoother wind-down within a week.
  2. Week 2: glycine 3 g at bedtime. Stir powder into water or take capsules. Look for whether you feel more rested the next morning, not just whether you fell asleep faster.
  3. Week 3+ (optional): saffron 28–30 mg. Most useful when stress or low mood is keeping you up. Give it 4 weeks.
  4. Week 6: keep what worked. Drop anything that did nothing. Fewer pills is a win.

The sleepy girl mocktail, upgraded

The viral recipe is tart cherry juice + magnesium powder + sparkling water. The combination itself has never been studied. Tart cherry juice has two small pilot trials in older adults with insomnia, and magnesium has the trials above. The weak spots are the magnesium form (citrate powders are laxatives) and the sugar in a large glass of juice.

Our version: 4 oz (120 ml) unsweetened tart cherry juice, sparkling water to top up, and magnesium bisglycinate (capsules on the side or a glycinate powder) at 200 mg elemental. Add 3 g glycine powder if you use it. Pregnant? Ask your clinician before adding magnesium supplements.

The core sleep stack

Foundation + add-on + optional. Evidence grade on each line; doses are the ones used in trials.

Stack at a glance. Evidence grade: A strong · B moderate · C limited · D preliminary.
IngredientDoseWhenEvidence
Magnesium bisglycinate (glycinate)200–400 mg elemental magnesium30–60 minutes before bedB · moderate
L-theanine200 mgWith the magnesium, 30–60 minutes before bedB · moderate
Glycine3 g (range 2–5 g)At bedtimeC · limited
Standardized saffron extractoptional28–30 mg standardized extractEvening (the sleep trial gave it 1 hour before bed)B · moderate
  1. 01

    Magnesium bisglycinate (glycinate)

    Evidence B · moderate

    200–400 mg elemental magnesium, 30–60 minutes before bed. Supports a calm nervous system and muscle relaxation at night. The foundation: cheap, well studied, gentle on the gut in this form.

    What the research shows: A 2025 randomized trial in 155 adults reporting poor sleep found 250 mg/day of elemental magnesium as bisglycinate lowered insomnia-severity scores a little more than placebo at 4 weeks (−3.9 vs −2.3 points). Older trials in older adults point the same way; effects are modest and largest in people who run low. (PMID 40918053, PMID 33865376, PMID 23853635)

    • Stay at or under 350 mg/day of supplemental magnesium unless a clinician says otherwise (the US upper limit for supplements); food magnesium does not count toward it.
    • Kidney disease: ask first. Magnesium can build up when kidneys clear it poorly.
    • Separate from levothyroxine, tetracycline/quinolone antibiotics and bisphosphonates by at least 2–4 hours.

    What to look for on the label

    Magnesium bisglycinate or glycinate, labelled in mg of elemental magnesium (not compound weight); third-party tested (NSF or USP).

    We only name brands we have vetted and work with; a specific pick will appear here once one is approved.

  2. 02

    L-theanine

    Evidence B · moderate

    200 mg, with the magnesium, 30–60 minutes before bed. Supports a quieter mind at bedtime without sedation. Useful when the problem is racing thoughts rather than heat.

    What the research shows: A 2025 meta-analysis of randomized trials found L-theanine modestly improved self-rated sleep outcomes. Doses in the trials were mostly 200–400 mg. (PMID 40056718, PMID 31623400)

    • Generally well tolerated. It can add to the effect of blood-pressure medicines and sedatives; check if you take them.

    What to look for on the label

    L-theanine (Suntheanine or plain L-theanine), 100–200 mg per capsule.

    We only name brands we have vetted and work with; a specific pick will appear here once one is approved.

  3. 03

    Glycine

    Evidence C · limited

    3 g (range 2–5 g), at bedtime. Supports the evening drop in core body temperature that comes before deep sleep, and next-day alertness after short nights.

    What the research shows: Small Japanese trials used 3 g before bed: after three nights of restricted sleep, glycine reduced next-day fatigue and improved a vigilance test. Animal work points to a core-temperature mechanism. Promising, but the human trials are small. (PMID 22529837, PMID 25533534)

    • Well tolerated at 3 g. People taking clozapine should not add glycine without their prescriber.

    What to look for on the label

    Glycine powder or capsules (pure amino acid). Powder is cheaper for a 3 g dose; it tastes slightly sweet.

    We only name brands we have vetted and work with; a specific pick will appear here once one is approved.

  4. 04

    Standardized saffron extract

    OptionalEvidence B · moderate

    28–30 mg standardized extract, evening (the sleep trial gave it 1 hour before bed). Supports mood and sleep quality when stress and low mood are part of the picture.

    What the research shows: In a 28-day randomized trial of 120 adults with unsatisfying sleep, 14 mg and 28 mg of affron an hour before bed improved sleep-quality ratings versus placebo. In 86 perimenopausal women, 14 mg twice daily for 12 weeks improved the psychological part of a menopause symptom scale (mostly anxiety and low mood), not hot flashes. (PMID 34438361, PMID 34463070)

    • Use only standardized extracts at studied doses; high doses of saffron are unsafe in pregnancy.
    • Talk to a clinician first if you take an SSRI/SNRI or other antidepressant, blood thinners, or blood-pressure medicines, or if you have bipolar disorder.

    What to look for on the label

    A standardized saffron stigma extract with a named, studied ingredient (affron 28 mg or Safr’Inside 30 mg), not "saffron powder".

    We only name brands we have vetted and work with; a specific pick will appear here once one is approved.

What we left out, and why

Lithium orotate (popular on TikTok and Reddit): left out on purpose

Low-dose lithium orotate is sold as a supplement and some people swear by it for night-time anxiety. There are no standardized human trials of lithium orotate for sleep, the amount of elemental lithium differs from label to label, and the 2021 review that argued for orotate based its case largely on animal data. Lithium in any form needs kidney and thyroid monitoring at prescription doses, and it interacts with NSAIDs (ibuprofen, naproxen), ACE inhibitors, ARBs and diuretics, which can raise lithium levels. If you are curious, talk to a clinician who can check kidney function and thyroid labs first. We do not recommend a product.

Mouth taping

A 2025 systematic review found 10 small studies (213 people): two showed a benefit in mild sleep apnea, and several flagged real risks, especially for people with nasal obstruction or untreated apnea. If you snore, get screened for sleep apnea before you tape anything.

Nightly melatonin

Useful short-term for jet lag and shift work; less useful for staying asleep, and label accuracy is poor in the US. Use the lowest dose, for days not months.

Safety and interactions

  • Not medical advice. Ask a clinician or pharmacist before starting if you take prescription medicines, are pregnant or breastfeeding, or have kidney, liver or thyroid disease.
  • Loud snoring, gasping or daytime sleepiness despite enough time in bed: get evaluated for sleep apnea.
  • Insomnia lasting 3 months or more deserves real treatment (CBT-I first), not just supplements.
  • Supplements are not evaluated by the FDA to diagnose, treat, cure or prevent any disease.

FAQ

What is the best magnesium for sleep, glycinate or threonate?

For sleep and calm, magnesium bisglycinate (glycinate) has the most direct trial evidence, including a 2025 randomized trial at 250 mg elemental magnesium per day, and it is gentle on the gut. Magnesium L-threonate is marketed for brain magnesium and cognition; its sleep evidence is thinner and it costs more.

How much glycine should I take for sleep?

3 g at bedtime is the dose used in the human sleep trials. Some people use 2–5 g. Start at 3 g.

Does the sleepy girl mocktail work?

The exact drink has not been studied. Its ingredients have some support: magnesium has modest trial evidence and tart cherry juice has two small pilot studies. Use magnesium glycinate rather than citrate, and keep the juice to about 4 oz to limit sugar.

Can I take magnesium, glycine and L-theanine together?

Yes. They are commonly combined and have no known interactions with each other. Add one at a time so you can tell what helps, and check with a pharmacist if you take prescription medicines.

Is lithium orotate safe for sleep?

It is not well studied. Doses and elemental lithium content vary by product, and lithium needs kidney and thyroid monitoring and interacts with common drugs such as ibuprofen and some blood-pressure medicines. Only consider it with a clinician who can monitor you.

Related

Waking at 3 a.m. in perimenopause →The same stack adapted for the menopause transition.The Wolverine stack, explained →BPC-157 + TB-500: evidence, legal status, safer alternatives.All stacks →

Sources

Studies were checked on PubMed on Oct 7, 2026. Product prices come from each brand's own site on the same date.

  1. Schuster J et al. Magnesium bisglycinate in healthy adults reporting poor sleep: randomized, placebo-controlled trial. Nat Sci Sleep 2025 · PMID 40918053
  2. Mah J, Pitre T. Oral magnesium for insomnia in older adults: systematic review & meta-analysis. BMC Complement Med Ther 2021 · PMID 33865376
  3. Bulman A et al. L-theanine and sleep outcomes: systematic review and meta-analysis. Sleep Med Rev 2025 · PMID 40056718
  4. Bannai M et al. Glycine and subjective daytime performance in partially sleep-restricted volunteers. Front Neurol 2012 · PMID 22529837
  5. Kawai N et al. Sleep-promoting and hypothermic effects of glycine via NMDA receptors in the SCN. Neuropsychopharmacology 2015 · PMID 25533534
  6. Lopresti AL et al. Evening saffron extract (affron) on sleep quality: RCT. Sleep Med 2021 · PMID 34438361
  7. Zick SM et al. Standardized chamomile (apigenin-containing) extract for chronic primary insomnia: pilot RCT. BMC Complement Altern Med 2011 · PMID 21939549
  8. Pigeon WR et al. Tart cherry juice beverage and sleep in older adults with insomnia: pilot. J Med Food 2010 · PMID 20438325
  9. Losso JN et al. Pilot study of tart cherry juice for insomnia. Am J Ther 2018 · PMID 28901958
  10. Systematic review: safety and efficacy of mouth taping in mouth breathing, sleep-disordered breathing or OSA. PLoS One 2025 · PMID 40397877
  11. Nocturnal mouth-taping and social media: scoping review. 2024 · PMID 39662104
  12. Pacholko AG, Bekar LK. Lithium orotate: a superior option for lithium therapy? Brain Behav 2021 · PMID 34196467
  13. McKnight RF et al. Lithium toxicity profile: systematic review and meta-analysis. Lancet 2012 · PMID 22265699
  14. NIH Office of Dietary Supplements: Magnesium fact sheet
  15. Sleepmaxxing statistics: TikTok post counts and US search volumes (Aug 2026)