Best Low-Dose Melatonin (2026): 1 mg and Under, Ranked

The smallest amount a major brand puts in a capsule. Life Extension Melatonin 300 mcg states 0.3 mg and 100 capsules, at $7.50. The title describes it as sleep support and nothing more; Life Extension's labels are characteristically spare.

The ladder around it is the other reason to buy in: 500 mcg ($13.50, value size), 1 mg (60 capsules, $4.39) and 3 mg in the same capsule, so you can move up in small steps without changing brand or format. The brand is reviewed in the Life Extension melatonin review, and this capsule also holds the low-dose slot in our flagship best melatonin ranking.

The clinical starting point, in a capsule. Pure Encapsulations Melatonin 0.5 mg states 0.5 mg and 60 capsules, at $12.50. The title says nothing else, which is the brand's pattern: the ingredient, the capsule, the amount.

The same capsule comes in a 180 count at $31.00, and the brand's ladder continues to 3 mg and a sustained-release Melatonin-SR. For the same 0.5 mg at a lower price from a less clinical brand, Wellness Resources 0.5 mg capsules were $13.99 at our check with no count in the title. The brand is reviewed in the Pure Encapsulations melatonin review, and the practitioner-brand head-to-head is Life Extension vs Pure Encapsulations.

Low amount, no water. The Natrol Melatonin 1 mg Fast Dissolve states 1 mg, strawberry, 90 count, at $6.97. It is the lowest amount on the fast-dissolve shelf from any major brand, and it is inside the 0.5 to 3 mg range many clinicians cite as a starting point.

If 1 mg proves right and you want the format's step up, the 3 mg Fast Dissolve is the identical tablet. The full fast-dissolve field is in our best fast-dissolve melatonin guide, and the brand in the Natrol melatonin review. Note that below 1 mg the fast-dissolve shelf runs out; the sub-milligram products on this page are capsules, a timed-release tablet, a liquid and a plain tablet.

Four dollars, six months, one milligram. The Nature's Bounty Melatonin 1 mg states 1 mg and 180 tablets, with the label's structure/function language ("Promotes Relaxation and Sleep Health") and "100% Drug Free," the category phrase that separates a melatonin supplement from doxylamine or diphenhydramine sleep aids that are drugs.

Nature's Bounty also makes the 3 mg Quick Dissolve (240 for $7.74) for the next step up in a no-water format. The brand is reviewed in the Nature's Bounty melatonin review, every 1 mg product across formats is ranked in our best 1 mg melatonin guide, and the site-wide cost-per-night leaders are in best cheap melatonin.

Coverage through the night, at a fraction of a milligram. The Life Extension Melatonin 6 Hour Timed Release, 300 mcg states 0.3 mg in an extended-release formula the title describes as gentle sleep support. The six-hour figure is Life Extension's formulation claim; we have not measured it.

The same formula exists at 750 mcg ($6.00) and, in a dual-phase capsule, as IR/XR 1.5 mg (60 capsules, $9.00). None of the timed-release titles state a count, so the bottle is the only source of cost per night. The slow-release field is ranked in our best time-release melatonin guide, and the immediate-versus-extended question is argued in time-release vs immediate-release melatonin.

The only format that lets you pick any amount. Natrol Liquid Melatonin for Adults, 1 mg states 1 mg per serving, berry flavor, 2 fl oz. Because it is a liquid with a measured serving, a partial serving is a partial amount, which is the whole reason a low-dose buyer might want it.

Natrol also sells a 2.5 mg liquid in 8 fl oz ($12.87) for people who have settled higher. The liquid field, including Source Naturals and Life Extension liquids, is ranked in our best liquid melatonin guide, and the format question is argued in liquid vs gummy melatonin.

Three hundred and sixty-five nights of 300 mcg. Carlyle Melatonin 300 mcg states 300 mcg, low dose and 365 tablets, at $9.99. That is about 2.7 cents per tablet, and a bottle that will still be there next September.

Carlyle also sells a 1 mg low dose, 300 tablets at the same $9.99 and a 1 mg liquid, 4 fl oz at $8.99. The brand is reviewed in the Carlyle melatonin review. For the very lowest amount on Amazon from a recognized name, Utzy Micro Melatonin 0.25 mg cherry tablets exist at $21.95, with no count in the title; the whole spectrum is covered in low-dose vs high-dose melatonin.