Melatonin is the world's most popular sleep aid. It's also widely misunderstood - and for many people, it may be making things worse.

Walk into any pharmacy or grocery store and you'll find an entire shelf dedicated to melatonin. Gummies, capsules, sprays, dissolvable strips - in doses ranging from 1mg to 10mg or more. It's sold as a natural sleep aid, positioned as harmless, and taken nightly by millions of people who assume that because melatonin is something the body produces on its own, supplementing with it can only help.

The reality is more complicated. And for a meaningful portion of the people taking it, the nightly melatonin habit may be doing less than they think - or quietly working against them.

What Melatonin Actually Does

Melatonin is a hormone produced by the pineal gland in response to darkness. Its primary role is not to make you sleep - it's to signal to your body that it's nighttime. Think of it as a timing cue rather than a sedative. Melatonin tells your circadian clock that darkness has arrived and that the conditions for sleep are present. It doesn't generate sleep itself.

This distinction matters enormously when it comes to understanding what melatonin supplements can and can't do.

Melatonin is genuinely effective for circadian rhythm disruptions - jet lag, shift work, adjusting to a new time zone. In these cases, a small dose taken at the right time helps reset the body clock. The research supporting melatonin for these uses is solid.

For general insomnia - difficulty falling asleep, staying asleep, or achieving restorative sleep on a regular basis - the evidence is considerably weaker. A 2022 analysis of melatonin research found that melatonin reduced the time to fall asleep by an average of about seven minutes compared to placebo. Seven minutes. For the majority of people taking melatonin nightly for ongoing sleep struggles, it is not doing what they think it's doing.

The Dose Problem

Here's where things get particularly important: the human body produces roughly 0.1 to 0.3mg of melatonin at night under normal conditions. Most over-the-counter melatonin supplements contain 5mg, 10mg, or even more - doses that are 30 to 100 times higher than what the body naturally produces.

This isn't a minor discrepancy. When you take a 10mg melatonin supplement, you're flooding your body with a hormone at a concentration it was never designed to handle. The short-term effect may feel like it's helping you feel drowsy. The longer-term implications are more concerning.

Research has found that supraphysiological doses of melatonin - meaning doses far above what the body produces naturally - can downregulate the body's own melatonin production over time. In other words, regular high-dose melatonin supplementation may reduce your body's ability to produce its own melatonin, creating a dependency that makes natural sleep harder without the supplement.

The Hormonal Disruption Risk

Melatonin doesn't operate in isolation. It interacts with a range of other hormones - including cortisol, estrogen, progesterone, testosterone, and thyroid hormones - through shared signaling pathways.

For women in perimenopause and menopause, who are already navigating significant hormonal flux, this interaction is particularly worth understanding. Melatonin receptors are present throughout the body, including in reproductive tissues, and melatonin's influence on the hormonal axis is broader than most people realize. High-dose melatonin supplements can interfere with the hormonal signaling these women are already working to stabilize - a risk that's rarely mentioned on the label.

For anyone taking other hormonal medications or managing conditions that affect hormone balance, the interaction between synthetic melatonin and the broader endocrine system is worth a conversation with a physician before making nightly supplementation a habit.

The Regulation Gap

Melatonin occupies an unusual regulatory position. In the United States, it's classified as a dietary supplement rather than a drug - which means it doesn't require FDA approval before going to market, and manufacturers aren't required to prove it's effective or that the dose on the label matches what's actually in the product.

A study published in the Journal of Clinical Sleep Medicine tested 31 melatonin supplements and found that the actual melatonin content varied from 83% below to 478% above what was listed on the label. Nearly 71% of the products tested were not within 10% of the labeled dose. Some contained no detectable melatonin at all. Others contained serotonin, which was not disclosed on the label.

When you take a 5mg melatonin gummy, you may be getting anywhere from less than 1mg to more than 28mg of melatonin - with no reliable way to know which.

Why People Think It's Working

If melatonin's effect on sleep onset is modest and its regulation is unreliable, why do so many people feel like it helps?

A few reasons. First, melatonin does produce a mild sedative effect at high doses - so there's a real subjective experience of drowsiness that feels like it's improving sleep. Second, the placebo effect in sleep research is unusually strong - believing you've taken something that will help you sleep is itself sleep-promoting. Third, many people take melatonin as part of a wind-down routine that includes dimming lights, reducing screen time, and getting into bed - all of which support sleep independently of the supplement.

None of this means melatonin never helps anyone. For some people, in some contexts, it does. The problem is the assumption that because it feels like it's working, it's doing what they think it's doing - and that taking more of it, or taking it indefinitely, is harmless.

What Actually Supports Sleep Quality

The mechanisms that drive genuine, restorative sleep are not the same mechanism that melatonin targets. Deep, consolidated sleep - the kind that restores energy, supports hormonal health, consolidates memory, and allows the body to repair - depends on:

• A stable circadian rhythm, established by consistent sleep and wake times
• A well-regulated cortisol rhythm that allows the nervous system to wind down at night
• Sufficient time in slow-wave and REM sleep stages, which melatonin doesn't directly promote
• A sleep environment and pre-sleep routine that support the natural transition from alert to restful

Approaches that work with these mechanisms - rather than overriding the body's natural timing signal with a synthetic flood of the same hormone - tend to produce more durable improvements in sleep quality over time.

A Note on PeptiSleep®

Brik Sleep Gummies are formulated with PeptiSleep®, a plant-derived peptide clinically studied for its effect on sleep quality - including time to fall asleep and overall restfulness. PeptiSleep works through a different mechanism than melatonin, supporting the body's natural sleep architecture without introducing synthetic hormones or disrupting the endocrine signaling that melatonin supplements can affect.

For people who have been taking melatonin nightly without getting the results they hoped for - or who are concerned about the hormonal implications of long-term melatonin use - a melatonin-free alternative is worth understanding.

The Bottom Line

Melatonin is not a sleep hormone in the way most people understand it. It's a timing signal - useful for jet lag and circadian disruption, but modest in its effect on the kind of ongoing sleep problems most people are actually trying to solve. The doses in most supplements far exceed what the body produces naturally, the labeling is unreliable, and the long-term hormonal implications - particularly for women navigating perimenopause and menopause - are underappreciated.

None of this means melatonin is dangerous for everyone. But it does mean the casual, nightly, high-dose habit that millions of people have developed deserves more scrutiny than it typically gets.

Better sleep is available. It just may not come from the supplement most people reach for first.

If you're ready to try a different approach, give Brik a try risk-free for 30 days.

Melatonin-free. Clinically studied. Designed for nightly use.