Where it sits in the atlas: Natrol markets this tablet under sleep; the bottle's words are "fall asleep faster, stay asleep longer," and the brand's page describes it as a product for "occasional sleeplessness," each followed by the supplement disclaimer. That is the seller's positioning. This entry checks the dose against the research and the label against itself, and makes no sleep promise of its own.
The short version
- One tablet supplies 5 mg of melatonin and nothing else active; 5 mg is the top of the range used in adult trials, and many studies used a fraction of it.
- Pooled across 19 trials in adults and children with primary sleep complaints, melatonin's measured effect is small: about 7 minutes faster to fall asleep and about 8 minutes more sleep than placebo. The sleep-medicine society's 2017 guideline suggests against it for long-standing sleep difficulty.
- Seen on Amazon at $8.96 for 90 tablets (about 10 cents each) on September 30, 2026, in stock, shipped and sold by Amazon.com.
What the label shows
We read the Supplement Facts panel from the label photographs on the Amazon listing on September 30, 2026, and matched the product name, strength, count and strawberry flavor to Natrol's own product page, which lists the 5 mg fast-dissolve tablet in 30, 90 and 150 counts [1]. Serving size is one tablet; 90 servings per bottle.
| Ingredient | Amount per serving | What to know |
|---|---|---|
| Melatonin | 5 mg (DV not established) | The only active ingredient. No vitamin B6, no herbs, no "sleep blend," which is a plus for anyone who wants to know exactly what they took. |
| Other ingredients | — | Xylitol, cellulose gum, soy polysaccharides, dextrose, crospovidone, dextrin, modified food starch, maltodextrin, silicon dioxide, malic acid, natural flavor, stearic acid, beet root extract (color), magnesium stearate, citric acid. |
| Allergens | — | "Contains: Wheat, Soy." Formulated without milk, egg, fish, crustacean shellfish, tree nuts, peanuts and sesame, per the label. |
The bottle prints "No artificial sweeteners," and the panel bears that out: the sweetness comes from xylitol (a sugar alcohol) and dextrose (glucose), with malic and citric acid for the strawberry tartness and beet root extract for the pink color. Xylitol is the first item on the "other ingredients" list, which means it is the largest of them by weight. Keep the bottle away from dogs: the FDA warns that xylitol is dangerous to them even in small amounts [7]. The label also prints "Non-GMO," "100% Drug-Free," "Non-Habit Forming" and "Vegetarian." These are the seller's own descriptors; none is a third-party certification seal, and we found none on the label. One small inconsistency: the listing's text says to take the tablet "20 to 30 minutes before bedtime," while the panel photograph says 30 minutes. Neither the panel image nor the listing shows a manufacturer's address; the listing identifies the vendor as Natrol LLC.
What the evidence shows
Melatonin is a substance the brain releases in the evening as light fades, which is why supplements of it are studied as a timing signal rather than as a sedative. NIH's complementary-health center sums up the human evidence this way: short-term use "appears to be safe for most people"; for jet lag after eastward flights it "may be better than a placebo" (four studies, 142 travelers); and for ordinary difficulty falling asleep, "there's not enough strong evidence," citing the 2017 American Academy of Sleep Medicine and 2016 American College of Physicians guidelines [2].
The numbers. A 2013 meta-analysis pooled 19 randomized trials (1,683 people, adults and children with primary sleep complaints) and found that melatonin shortened the time to fall asleep by 7.06 minutes and lengthened total sleep by 8.25 minutes compared with placebo, with a small improvement in rated sleep quality. Adult trials used 0.1 mg to 5 mg (the three pediatric trials used weight-based doses or 5 mg), and the authors saw somewhat larger effects with higher doses and longer use [3]. Seven minutes is a real, replicated effect and also a small one: a fair expectation, not a switch. The AASM guideline reviewed the same kind of evidence for adults with long-standing sleep difficulty and issued a weak recommendation that clinicians not use melatonin for it, because the measured gains fell below the threshold the panel had set for clinical significance [4].
Where 5 mg sits. The Cochrane review of melatonin for jet lag (ten trials) found that daily doses "between 0.5 and 5 mg are similarly effective, except that people fall asleep faster and sleep better after 5 mg than 0.5 mg," and that doses above 5 mg "appear to be no more effective" [5]. So 5 mg is the top of the useful range in that literature, not the middle of it, and many trials used a tenth of it. Cochrane also noted that a 2 mg slow-release form worked less well, suggesting a short, sharp peak matters; the fast-dissolve format here is built for exactly that. For someone prone to next-morning grogginess, a lower-dose product is a legitimate first choice.
Label accuracy. This is a supplement, not a drug, and NIH notes it is regulated "less strictly by the FDA than a prescription or over-the-counter drug would be" [2]. A 2017 laboratory analysis of 31 melatonin products found actual content ranging from 83 percent below to 478 percent above the label, and detected serotonin in 8 of them [6]. That study did not test this product, and Natrol's page describes its ingredient as "99% pure melatonin," a claim we have no way to check. We mention the study because no melatonin label should be read as a precise number.
The bottle's warning list is long and worth reading in full: not for anyone under 18; ask a physician first if you take any medication, have any medical condition, are pregnant or nursing, or have an autoimmune condition or a diagnosed mood disorder; it can cause drowsiness, so no driving, machinery or alcohol after taking it; and it is "for occasional short-term use only." NIH adds that melatonin may stay active longer in older adults and cause daytime drowsiness, and that people with a seizure condition or on blood thinners need medical supervision [2]; the Cochrane reviewers flagged the same two groups [5].
How it fits a daily routine
The label says one tablet 30 minutes before bedtime, dissolved in the mouth or chewed, no water needed. Timing is the whole game with melatonin: taken at the wrong time, early in the day, Cochrane notes it "is liable to cause sleepiness and delay adaptation" [5]. Keep it for the last half hour before a fixed bedtime, in a dim room; a bright screen after the tablet works against it. The label frames this as occasional use, so treat it as a tool for a disrupted night or a time-zone change, not a nightly default. If you also use the magnesium entry in this system, nothing on either label rules out taking both, but start one at a time so you know which one did what. Do not combine it with alcohol or another sedating product.
Price and where it is sold
On September 30, 2026 the 90-count bottle was $8.96 on Amazon, in stock, shipped and sold by Amazon.com: about $0.10 per tablet, which matches Amazon's own per-count line. The same listing offered a 150-count strawberry variation (ASIN B01E14X8JA) at $17.32 that day, which is more per tablet, not less, so the 90-count was the better buy on that date. Prices change; nothing on this page is a current price beyond the date shown. Amazon's standard return window applies to most items; check the listing's own terms.
Who should look elsewhere
- Anyone under 18: the label rules it out, and the studied doses for children are weight-based and clinician-directed.
- Anyone pregnant or nursing: NIH describes a lack of safety research, and the label says to ask a physician.
- Anyone on blood thinners, seizure medicine, immune-suppressing or mood medicines, or with an autoimmune condition: supervision first.
- Anyone with a wheat or soy allergy: both are declared on the panel.
- Anyone whose sleep trouble is nightly and long-standing: the guideline evidence points to a clinician and behavioral treatment first, not to a higher dose.
- Households where a dog can reach a nightstand, because of the xylitol.
Sources
- Natrol. Product page for Fast Dissolve Melatonin Tablets, 5 mg, strawberry, listing the 30-, 90- and 150-count sizes and the brand's description. View the product page
- National Center for Complementary and Integrative Health (NIH). Overview of melatonin: what it is, evidence for jet lag, shift work and difficulty falling asleep, safety, and who should be careful. Read the overview
- Ferracioli-Oda E., Qawasmi A., Bloch M.H. Meta-analysis of 19 randomized trials of melatonin for primary sleep complaints, reporting the pooled effects on time to fall asleep and total sleep and the dose range studied. PLoS One, 2013 (PubMed Central). Read the study
- American Academy of Sleep Medicine. 2017 clinical practice guideline on medicines for long-standing sleep difficulty in adults, including the weak recommendation against melatonin. Journal of Clinical Sleep Medicine (PubMed Central). Read the guideline
- Herxheimer A., Petrie K.J. Cochrane review of melatonin for jet lag, including the 0.5 mg to 5 mg dose comparison and timing cautions. Cochrane Database of Systematic Reviews, 2002. Abstract via the NIH PubMed E-utilities service. Read the abstract
- Erland L.A., Saxena P.K. Laboratory analysis of melatonin content and serotonin presence in 31 melatonin supplements. Journal of Clinical Sleep Medicine, 2017 (PubMed Central). Read the study
- U.S. Food and Drug Administration. Consumer update on xylitol and its danger to dogs. Read the update
- Amazon listing B004KUAI4E, label photographs and ingredient text for Natrol Melatonin 5 mg Fast Dissolve Tablets, Strawberry, 90 count, read September 30, 2026 (linked from the fact sheet on this page).
This entry is educational and is not medical advice. Ask a qualified clinician before starting any supplement, especially if you are pregnant, nursing, or take medication.