Best Supplements to Take Before Bed, According to the Research

Search "best supplements to take before bed" and you'll get a shelf's worth of options — magnesium, melatonin, tryptophan, valerian, a dozen herbal blends promising deep sleep in a capsule. Most of it is noise. A small number of ingredients have real trial support for helping people fall asleep faster, stay asleep longer, or simply feel less wired at 11pm, and the rest is marketing dressed up as science.

The short answer: start with magnesium glycinate if you want a gentle, non-hormonal baseline. Add a melatonin-plus-botanical blend if you need more help falling asleep specifically — Sleep Formula at 2 mg melatonin with every ingredient individually dosed, or Sleep Support at 10 mg with a broader but undisclosed botanical blend, and the 2 mg is the one that matches the studied range. Consider L-tryptophan or a single calming botanical like chamomile, lemon balm, or passion flower if you want a lighter, food-adjacent option. And leave omega-3 out of the bedtime conversation entirely — it's a good daily supplement, just not because of anything that happens at night. If the problem has run for months rather than weeks, the intervention with the best evidence isn't on this list at all: it's CBT-I.

Below is what the research actually supports for each of these, and a simple way to decide where to start instead of buying all of them at once.

Magnesium Glycinate: The Non-Hormonal Starting Point

Magnesium glycinate (magnesium bound to the amino acid glycine) is usually the first thing worth trying, for two practical reasons: it's gentle on the stomach compared to other magnesium forms, and it doesn't work through the melatonin pathway at all — so there's no hormonal signaling to worry about and no next-morning grogginess trade-off to weigh.

The evidence for magnesium and sleep has historically been thinner than its popularity suggested, and a 2025 randomized, placebo-controlled trial firms it up a little — with caveats that matter. Researchers randomised 155 healthy adults reporting poor sleep (134 completed) to either 250 mg of elemental magnesium as bisglycinate, alongside 1,523 mg of glycine, or a cellulose placebo nightly for four weeks, tracking the Insomnia Severity Index (ISI).¹ Note the glycine: it is a studied sleep ingredient in its own right, so this trial tests magnesium bisglycinate as a package rather than isolating the magnesium.

Here is the whole result rather than the headline. The magnesium group's ISI score fell 3.9 points (95% CI, −5.8 to −2.0); placebo fell 2.3 points (95% CI, −4.1 to −0.4). The between-group difference reached p = 0.049 — significant, but only just, and a result that close to the threshold is one that could plausibly fail to replicate. The authors put the effect size at Cohen's d = 0.2, which is small by any convention.

And then the part that was missing entirely: every secondary outcome was non-significant. No group difference on the Regensburg Insomnia Scale, the Sleep Quality Scale, the Fatigue Severity Scale, the Epworth Sleepiness Scale, the Positive and Negative Affect Schedule, the Perceived Stress Scale, or the PHQ-4. One primary outcome scraped past p = 0.05 and seven other measures showed nothing. That is a genuinely modest result, not a solid footing, and we shouldn't have summarised it as one. The trial was funded by a university institute, and one author discloses research funding and honoraria from nutraceutical companies.

Participants with lower dietary magnesium at baseline saw the biggest gains — an inverse correlation the authors flag as identifying possible "high responders," and which fits the broader pattern that magnesium helps most when you're running low rather than acting as a universal sedative. It's still a reasonable everyday starting point, mostly because it is low-risk rather than because it is powerful. Proco's Magnesium Glycinate delivers 275 mg elemental magnesium from 2,500 mg of magnesium glycinate — close to the trial's 250 mg, though note that our 275 mg is the figure for three capsules, not one. We've gone through this trial in more detail in what a new magnesium trial actually found.

Melatonin Blends: Sleep Formula vs. Sleep Support

If magnesium alone isn't enough — or you want something that directly targets sleep onset rather than general relaxation — the next step up is a formula that pairs melatonin with calming botanicals. Melatonin is the body's own sleep-timing signal, and supplementing it is one of the better-studied ways to shorten the time it takes to fall asleep.

A 2024 systematic review and dose-response meta-analysis in the Journal of Pineal Research set out to optimise both the dose and the timing of melatonin as a sleep-promoting drug — and timing turns out to matter more than most people assume.² Both figures an earlier version of this article removed as unverifiable are in fact in the paper, and they are the point of it: it pooled 26 randomised double-blind trials published between 1987 and 2020, contributing 1,689 observations, and found melatonin's effect on sleep onset and total sleep time peaks at 4 mg/day — with administration around three hours before the intended bedtime beating the 30-minutes-before-bed schedule almost every label assumes.² Both are restored here, and the consumer-website dosing advice that replaced them — which that same meta-analysis argues against — has been dropped. The practical reading: more is not better past 4mg, and when you take it may matter as much as how much. On tolerability, a systematic review of 37 randomised trials at 0.15–12mg found adverse events uncommon and mild — daytime sleepiness in 1.7% of participants, headache and dizziness each under 1% — while noting long-term data is scarce.⁷

Which means we have to correct something this article previously implied about our own products. Sleep Support's 10 mg is not a stronger version of Sleep Formula's 2 mg. It sits above the range where additional benefit has been demonstrated — which is exactly what the Sleep Support product page itself says, and this article should not have contradicted it. If you have never taken melatonin at that dose, the 2 mg product is the more evidence-aligned place to start, and the full picture is in melatonin: the real dose-response evidence.

More melatonin on the label doesn't mean a proportionally bigger effect on your sleep — the dose-response curve climbs, then flattens.

Sleep Formula contains 2 mg of melatonin plus six other ingredients — valerian 150mg, chamomile 100mg, GABA 100mg, L-tryptophan 100mg, lemon balm 100mg and passion flower 100mg — each with its own number on the label. Sleep Support contains 10 mg of melatonin alongside a 14-ingredient botanical blend that carries one combined weight rather than individual doses, so you cannot tell how much of any botanical you are taking. That difference is at least as important as the dose difference, and framing Sleep Support's blend as simply "more comprehensive" understated it. The honest summary: Sleep Formula is the product where you know exactly what you're getting; Sleep Support works more angles at once and asks you to accept that you can't audit it. The full comparison is here, and the ingredient-level breakdowns are in Inside Sleep Formula and Inside Sleep Support.

These are alternatives, not a stack — there's no research basis for combining two melatonin products, and doing so just adds unnecessary hormonal signalling without added benefit.

L-Tryptophan: The Food-Adjacent Option

L-tryptophan is the amino acid your body converts into serotonin and, downstream, melatonin — it's the same compound people associate with post-turkey drowsiness, just at a dose well above what a meal provides. A 2022 systematic review and meta-analysis in Nutrition Reviews found that tryptophan supplementation shortened wake-after-sleep-onset time, and that the effect was dose-dependent: participants taking 1 gram or more per day averaged roughly 29 minutes of nighttime wakefulness versus about 57 minutes in those taking less than 1 gram.³ Notably, the review found no significant effect on other sleep measures like total sleep time or how long it took to fall asleep — tryptophan's evidence is specific to staying asleep once you're already down, not a general sedative effect.

That makes it a reasonable option for people who fall asleep fine but wake up in the middle of the night, and it appeals to anyone who'd rather avoid melatonin's hormonal pathway altogether. But the dose is the whole point here, and we owe you the arithmetic: Sleep Formula contains 100 mg of L-tryptophan — a tenth of the ≥1 g/day that produced the effect above. If night waking is your specific problem and tryptophan is your chosen answer, our product is not delivering the studied dose and we aren't going to pretend it is. The full evidence picture, including dosing and safety notes, is in our L-tryptophan deep dive.

Calming Botanicals: Chamomile, Lemon Balm, and Passion Flower

Three individual botanicals show up consistently in sleep research and in Sleep Formula and Sleep Support's blends, each with its own trial evidence rather than folklore alone:

Chamomile. In a randomized trial of 60 older adults, 200 mg of chamomile extract taken twice daily for 28 days produced a significant improvement in subjective sleep quality (measured by the Pittsburgh Sleep Quality Index) compared to placebo — though it didn't meaningfully change how long people actually slept, suggesting its benefit is more about perceived quality than raw duration.⁴ That trial's total was 400 mg/day; Sleep Formula's chamomile is 100 mg, below the tested amount, and we say so on the product page rather than rounding up. Full evidence in our chamomile write-up.

Lemon balm. A double-blind, placebo-controlled crossover trial using a concentrated lemon balm (Melissa officinalis) extract found a meaningfully larger drop in Insomnia Severity Index scores versus placebo, with 87% of participants rated as improved on a clinical global-impression scale versus 30% on placebo.⁵ Read that percentage with its context attached, which we previously omitted: it comes from 30 participants across a two-week crossover, using a specific branded phytosome preparation, in a study led by the scientific director of the company that markets it. None of that makes it wrong. All of it makes it preliminary rather than persuasive. More in our lemon balm write-up.

Passion flower. A week of passion flower tea produced modestly but significantly better self-rated sleep quality than a placebo tea in healthy adults, although objective sleep-lab measurements didn't show a matching change — a common pattern with mild calming botanicals, where people feel a difference that's hard to fully verify with equipment — which is also the pattern you'd expect from a placebo response. More in our passion flower write-up.⁶

Each of those three has a full evidence breakdown linked in the paragraph above — worth reading if you're deciding between a single-botanical approach and a melatonin-plus-botanical blend. And if you'd rather avoid melatonin entirely, the non-melatonin options with actual research behind them are collected separately.

What Doesn't Belong in a Bedtime Stack

Not everything people take at night belongs there for a sleep-specific reason. Omega-3 EPA/DHA and creatine monohydrate are both supplements worth taking daily — but nothing about nighttime timing makes either one work better. Omega-3's cardiovascular and cognitive benefits come from consistent daily intake, not from when in the day you take it, and the same is true of creatine's effect on muscle phosphocreatine stores. If you already take Omega-3 EPA/DHA, or creatine from any brand, taking them at night is fine for convenience — just don't expect it to do anything for your sleep, and don't let it crowd out the ingredients that actually have sleep-specific evidence behind them.

A note on creatine: Proco discontinued its own Creatine Monohydrate in September 2026 and no longer sells it. The research discussed across our creatine articles still stands on its own — we just aren't the people selling you the product any more.

A Simple Decision Framework

The instinct to stack five sleep supplements at once is understandable and almost always the wrong move — more ingredients means more variables and no clear way to tell what's actually helping. A better approach: match one product to how disrupted your sleep is.

Mild, occasional restlessness: start with magnesium glycinate on its own, or a single calming botanical.
Trouble falling asleep, occasionally — travel, stress, a bad week: Sleep Formula, and it's also the better first melatonin product for anyone who wants to know exactly what they're taking.
More persistent, pronounced sleep disruption: Sleep Support works more angles at once — accepting a 10 mg melatonin dose above the studied range and a blend you can't itemise. If it's been months rather than weeks, raise it with a doctor and ask about CBT-I first.
Waking in the night rather than struggling to fall asleep: tryptophan is the better-matched evidence than more melatonin — but at ≥1 g/day, which is ten times what our formula contains.

Bottom line

Skip the shelf-of-everything approach. Pick the one product that matches your actual sleep problem, give it a few weeks of consistent use, and only add a second ingredient if the first genuinely isn't enough — that's how you find out what's actually working, instead of guessing.

And the honest ranking that a supplement company is least inclined to print: none of the ingredients above has evidence approaching that of cognitive behavioural therapy for insomnia. The magnesium trial above managed a small effect at p = 0.049 with seven null secondary outcomes. CBT-I is first-line treatment in clinical guidelines. If your sleep problem has lasted months rather than weeks, that is the better place to spend your effort, and we'd rather say so than sell you a capsule instead.

This article is for informational purposes only and has not been evaluated by the FDA. It is not intended to diagnose, treat, cure, or prevent any disease. Speak with a healthcare provider before starting any new supplement, especially if you take medication or have an existing health condition.

References

1. Schuster J, Cycelskij I, Lopresti A, Hahn A. Magnesium Bisglycinate Supplementation in Healthy Adults Reporting Poor Sleep: A Randomized, Placebo-Controlled Trial. Nature and Science of Sleep, 2025;17:2027-2040. pubmed.ncbi.nlm.nih.gov
2. Cruz-Sanabria F, Bruno S, Crippa A, Frumento P, Scarselli M, Skene DJ, Faraguna U. Optimizing the Time and Dose of Melatonin as a Sleep-Promoting Drug: A Systematic Review of Randomized Controlled Trials and Dose-Response Meta-Analysis. Journal of Pineal Research, 2024. doi:10.1111/jpi.12985
3. Sutanto CN, et al. The Impact of Tryptophan Supplementation on Sleep Quality: A Systematic Review, Meta-Analysis, and Meta-Regression. Nutrition Reviews, 2022;80(2):306-316. pubmed.ncbi.nlm.nih.gov
4. Adib-Hajbaghery M, Mousavi SN. The Effects of Chamomile Extract on Sleep Quality Among Elderly People: A Clinical Trial. Complementary Therapies in Medicine, 2017. pubmed.ncbi.nlm.nih.gov
5. Effects of Melissa officinalis Phytosome on Sleep Quality: Results of a Prospective, Double-Blind, Placebo-Controlled, and Cross-Over Study. Nutrients, 2024;16(23):4199. mdpi.com
6. Ngan A, Conduit R. A Double-Blind, Placebo-Controlled Investigation of the Effects of Passiflora incarnata (Passionflower) Herbal Tea on Subjective Sleep Quality. Phytotherapy Research, 2011;25(8):1153-1159. pubmed.ncbi.nlm.nih.gov
7. Besag FMC, Vasey MJ, Lao KSJ, Wong ICK. Adverse events associated with melatonin for the treatment of primary or secondary sleep disorders: a systematic review. CNS Drugs. 2019. doi:10.1007/s40263-019-00680-w

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