Melatonin Dosage Chart: What the Labels Direct, by Format and Age

Each row is one labeled product from our verified catalog. The amount column is the amount per serving on the Supplement Facts panel, the serving column is how many pieces or milliliters make that serving where the listing states it, the timing column is the label's own direction, and the age column is the age the label states (adults, or the kids range printed on the label). Where a listing does not state a detail, the cell says not published rather than guessing. Prices are the live Amazon price on September 5, 2026, verified via the Amazon Creators API.

The chart is sorted by format, then by amount, because that is how the shelf is organized and how the buying decision actually goes: pick the delivery form that suits you, then find the lowest amount in it. The reasoning behind that order, and the pharmacology of why more is not better, is on how much melatonin should I take.

The rows at 10 and 20 mg are there because the products exist and are honestly labeled, not because they are where to start. Many sleep clinicians favor the lowest effective amount, commonly cited as 0.5 to 3 mg, and the best low-dose melatonin guide ranks the top of this table. Amounts above 20 mg in our catalog come only from lesser-known sellers and are not something we rank; the high-dose page explains why it stops at 20.

Where the serving size column says not published in title, the Supplement Facts panel on the listing states it and it is frequently two gummies; check before comparing cost per night. The best melatonin gummies and best liquid melatonin guides rank these formats in full.

Every row below is a product sold for children, and the age column is what the label or listing states. It is not a recommendation for any age. The American Academy of Pediatrics advises talking to a pediatrician before giving melatonin, using the lowest amount, and keeping gummies out of reach; US poison control centers documented a sharp rise in pediatric melatonin ingestions through the early 2020s, most of them unintentional. A pediatrician decides whether melatonin is appropriate for a child and at what amount.

The lowest-amount rows exist precisely because pediatric guidance stresses the lowest amount. The full pediatric guidance, the storage rules, and the poison-control context are on is melatonin safe for kids, and the ranked kids guide is best melatonin for kids.

Reading the chart, the eye lands on the middle rows and the mind goes to 5 or 10 mg, because that is where the marketing lives (extra strength, maximum strength). The guidance many sleep clinicians give runs the other way, and it is worth stating plainly with its reasons. Melatonin acts through a fixed number of receptors, so amounts beyond what those receptors can use do not bind harder; they stay in the blood longer, which is the mechanism behind next-day grogginess. Published research on sleep onset and jet lag has generally not found that larger amounts outperform smaller ones on the outcomes studied. From those two facts comes the commonly cited starting range of 0.5 to 3 mg.

That is general guidance, attributed, and it is where this page stops. It is not a recommendation for any reader, because the reader might be 12, or 75, or pregnant, or on warfarin, and in each of those cases the chart above is the wrong place to look for an answer. Melatonin can interact with blood thinners, immunosuppressants, blood-pressure medication and diabetes medication; a pharmacist can check your list. Older adults are often steered toward lower amounts. Pregnant and nursing people should consult a doctor, and we make no product recommendation for them. And nobody should drive after taking it.

Two conversions trip up more buyers than any other line on the chart. The first is units: 1 mg equals 1,000 mcg, so a 300 mcg capsule is 0.3 mg, a 500 mcg capsule is 0.5 mg, and a 750 mcg timed-release capsule is 0.75 mg. Makers who sell low-dose products tend to label in micrograms because the number reads as a meaningful quantity rather than a decimal; the amount is the same either way. The second is pieces per serving: a gummy jar that states 10 mg per two gummies is a 5 mg gummy, and a gummy jar that states 5 mg per gummy delivers the same amount in one piece. The chart shows the amount per serving as the label states it and notes the serving size where the listing publishes it.

When the serving size is not in the listing title, it is on the Supplement Facts panel of the product page, always. Read it before comparing two jars on price, because the honest cost-per-night figure is price divided by servings, not by pieces. The what is melatonin page walks through the panel line by line, and when to take melatonin covers the timing column in depth.