One small tablet supplying 3 mg melatonin, made by Pharmavite under the Nature Made brand; 240 tablets per bottle, one tablet an hour before bed.
3 mg melatonin with no Daily Value set, plus 45 mg calcium (3% DV) from the tablet's calcium carbonate base. A USP Verified mark is printed on the label.
Adults whose sleep timing has drifted after travel or a shifted week and who want a plain, low-cost, single-ingredient product to discuss with a clinician for occasional use.
Next-morning grogginess, more likely in older adults; ask first if you take a blood thinner, any sedative or other medicine, or are treated for seizures; not studied enough in pregnancy or nursing.
What the label shows
We read the Supplement Facts panel from the label photographs on the Amazon listing and from Nature Made's own product page on September 30, 2026. The two agreed on every line.
| Ingredient | Amount per serving | What to know |
|---|---|---|
| Melatonin | 3 mg — no Daily Value established | There is no reference intake for melatonin. A 2024 dose-response analysis of trials found the effect on falling asleep and total sleep rising up to about 4 mg a day, where it peaked [3], so 3 mg sits toward the upper end of the range that analysis modeled, not below it. |
| Calcium (as calcium carbonate) | 45 mg — 3% DV | A tablet base, declared because it is a nutrient. At 3% of the 1,300 mg Daily Value it adds almost nothing to a day's calcium and is not a reason to buy or avoid the product. |
| Other ingredients | — | Cellulose gel, maltodextrin, croscarmellose sodium, stearic acid, magnesium stearate, per the label. |
Serving size is one tablet, and the directions read "Adults, take 1 tablet one hour before bedtime with water." The label lists no synthetic FD&C dyes, no artificial flavors, no preservatives and gluten free, and it carries the seller's descriptors "100% drug free" and "non habit forming." The first of those only means the product is sold as a dietary supplement rather than a medicine; it says nothing about strength. The printed warning tells you to consult a physician before use if you are pregnant, trying to become pregnant, nursing, taking any medication or living with any chronic condition; to avoid alcohol, sedatives and tranquilizers while using it; not to drive or operate machinery within eight hours of a dose or if you feel groggy; to treat the product as something for occasional or intermittent use; that it is not intended for anyone under 18; and that melatonin "should not be a substitute for a good bedtime routine." Nature Made's page adds that persistent sleep difficulty, or use beyond three months, is a reason to talk to a physician.
The seal on the front of the bottle is the USP Verified mark, and the back panel states that USP has tested and verified the ingredients, the amounts and the manufacturing process. According to Nature Made's own explanation of the program, a verified product contains the ingredients on the label in the declared amounts, does not contain harmful levels of specified contaminants, breaks down within a specified time, and is made under FDA current Good Manufacturing Practices [6]; the brand's table of verified products lists the Melatonin 3 mg tablet. The mark does not say anything about whether melatonin works or whether 3 mg is the right amount for you. One limit to state plainly: on September 30, 2026, USP's public directory of verified products refused our connection at every attempt, so we credit the mark as printed on the label and as listed by Nature Made, not as confirmed in USP's directory by us.
What the evidence shows
Melatonin is a substance the brain releases in darkness that helps set the body's day-night clock; the melatonin in supplements is made synthetically [1]. What it does in trials is smaller than the packaging suggests. A 2013 meta-analysis of 19 placebo-controlled trials with 1,683 adults and children diagnosed with sleep disorders found that melatonin shortened the time to fall asleep by about seven minutes and lengthened total sleep by about eight minutes, with a small improvement in rated sleep quality [2]. The authors called the effect modest.
Dose and timing matter more than most labels let on. The 2024 dose-response analysis of 26 double-blind trials in people with sleeplessness and healthy volunteers (1,689 observations) found that time to fall asleep and total sleep improved as the dose rose toward roughly 4 mg a day and then plateaued, and that taking melatonin around three hours before the intended bedtime looked more effective than the common habit of 2 mg half an hour before bed [3]. Read against that, a 3 mg tablet taken an hour before bed, as the label directs, is a mid-to-upper dose at a slightly later timing than the analysis favored. The usual "start low" advice comes from a different direction: the National Center for Complementary and Integrative Health notes that melatonin may stay active longer in older people and cause daytime drowsiness [1]. A 3 mg tablet is not the lowest strength sold; if a clinician suggests less, a lower-strength product is a cleaner route than splitting a small tablet.
The situations with the best evidence are timing problems. NCCIH reports that melatonin may reduce jet-lag symptoms after flights in either direction, that the evidence for shift work is inconclusive, and that in a 2018 trial of 307 adults whose body clock ran late, melatonin one hour before the desired bedtime combined with a fixed bedtime moved sleep onset earlier by an average of 34 minutes [1]. For long-running sleeplessness, NCCIH reports that major practice guidelines do not find enough evidence to recommend it. Short-term use appears safe for most people, with headache, dizziness, nausea and sleepiness the side effects reported; long-term safety is simply not known [1].
The verified-content mark earns its place because of what has been found in melatonin products on the market. A 2017 laboratory analysis of 31 melatonin supplements bought in Canada measured actual content from 83% below to 478% above the label, found that more than 71% missed their claim by over 10%, with lot-to-lot swings inside single products, and detected serotonin, a related compound that has no business in a supplement, in eight of them [4]. NCCIH cites the same finding [1]. The seller's own statements on the listing images, "helps you fall asleep faster and supports restful sleep" and "helps to regulate sleep and wake cycles," are the seller's structure/function claims and carry the standard FDA disclaimer [5].
Grogginess the next morning is the complaint to plan for, and it is more likely in older adults, in whom melatonin may stay active longer [1]. The label says not to drive or operate machinery within eight hours. NCCIH singles out people taking blood thinners and people treated for seizures as needing medical supervision, and the label extends the "ask first" rule to anyone on any medication [1] [5].
Who it may suit, and who should look elsewhere
The research supports a narrower use than the marketing does: a short course when your sleep timing has slipped, taken alongside the routine work that does most of the lifting. Our evening-routine briefing puts melatonin last for that reason.
- May suit: adults past 40 whose bedtime has drifted late after travel or a run of late nights, who want a single-ingredient product with a verified-content mark at a few cents a night, and who plan to use it for days, not months.
- May suit: people who prefer a tablet with a short ingredient list and no dyes, flavors or preservatives.
- Ask a pharmacist or clinician first: anyone on blood thinners, sedatives, sleep medicines or any other regular medicine, and anyone treated for seizures; the label tells anyone taking medication to consult a physician first.
- Look elsewhere: pregnant or nursing women, for whom the safety research is lacking [1], and anyone under 18, whom the label excludes.
- Look elsewhere, or start lower: older adults who wake foggy on it, and anyone who needs it every night for weeks; that pattern is a reason to talk to a clinician about the sleep itself, not to buy a bigger bottle.
- Adjust expectations: the measured effects are minutes of earlier sleep, not a transformed night.
Price, size and where it is sold
On September 30, 2026 the Amazon listing for ASIN B005DEK990 showed "Nature Made Melatonin 3mg Sleep Aids for Adults, 240 Tablets" at $10.73, in stock, shipped and sold by Amazon.com. That is about 4.5 cents per tablet, or 240 nights at one tablet a night. The listing was marked "non-returnable due to food safety reasons" that day, even though Amazon's general policy allows most items to be returned within 30 days of delivery [7]; check the return line on the listing before you order. Nature Made also sells a 120-tablet bottle of the same formula.
Sources
- National Center for Complementary and Integrative Health (NIH). Melatonin: what you need to know. Updated May 2024. link
- PLoS One, 2013. Meta-analysis of 19 placebo-controlled melatonin trials (1,683 participants): time to fall asleep, total sleep time and sleep quality. PubMed record. link
- Journal of Pineal Research, 2024. Systematic review and dose-response meta-analysis of 26 randomized trials on the timing and dose of melatonin for sleep. PubMed record. link
- Journal of Clinical Sleep Medicine, 2017. Laboratory analysis of melatonin content and serotonin presence in 31 commercial melatonin products. PubMed record. link
- Nature Made (Pharmavite). Melatonin 3 mg Tablets product page: Supplement Facts, directions and warning. link
- Nature Made. What the USP Verified mark covers, with the brand's table of verified products. link
- Amazon.com. "About Our Returns Policies" help page, opened September 30, 2026 (general 30-day return window; non-returnable categories). Not linked: this site links to Amazon only through product listings.
This report is educational and is not medical advice. Ask a qualified clinician before starting any supplement, especially if you are pregnant, nursing, or take medication.