Carlyle Melatonin Review (2026): The $9.99 Value Line, Sorted

The whole Carlyle argument is on this label: the same format as the big brands at a third of the price. The Carlyle Melatonin 5 mg Fast Dissolve is a berry tablet the label directs you to let dissolve in the mouth before bed, no water. The title states 5 mg, 300 tablets and berry flavor, and at $9.99 the math is $9.99 divided by 300, about 3.3 cents a night. That undercuts every fast-dissolve from a Tier A brand on this site, and it is why this bottle sits in our best cheap melatonin ranking.

Five milligrams is above the 0.5 to 3 mg range many clinicians cite as a starting point, which is why the 3 mg tablet gets the next card. The same berry fast-dissolve also comes at 10 mg (240 tablets, $9.99, about 4.2 cents) and 12 mg (180 tablets, $9.99), both of which are amounts for people who have already settled there, not for anyone starting out. The full fast-dissolve field is ranked in our best fast-dissolve melatonin guide.

If you have never taken melatonin, this is the Carlyle to start with. The Carlyle Melatonin 3 mg Fast Dissolve states 3 mg and 250 tablets in its title; unlike the 5 mg, the title does not state a flavor, so we do not either. $9.99 divided by 250 is about 4 cents a night, and the bottle lasts about eight months at one tablet nightly.

The catch is the commitment. If 3 mg turns out to be too little, you are holding 200-plus tablets of an amount you do not want, and Carlyle's fast-dissolve does not come at 1 mg (the low amounts in the line are plain swallowed tablets, below). The benchmark to weigh it against is the Nature's Bounty 3 mg Quick Dissolve at the bottom of this page: 240 count, $7.74, about 3.2 cents a night, from a pharmacy-shelf brand. On price the two are a wash; on brand record, Nature's Bounty wins.

Low dose is where Carlyle earns real respect. The Carlyle Melatonin 300 mcg is a plain swallowed tablet at a labeled 300 mcg, sold 365 to a bottle at $9.99, about 2.7 cents a night. The 0.3 mg figure is close to the low end of the 0.5 to 3 mg range many sleep clinicians cite as a starting point, and it is far below the 10 mg that dominates the rest of Carlyle's catalog.

One step up in the line is the Carlyle Melatonin 1 mg, 300 low-dose tablets at $9.99, about 3.3 cents a night, which is the natural next bottle if 300 mcg proves too little. Both are swallowed tablets rather than fast-dissolves, so they need water and the lead time a label typically directs. For a senior, for whom lower amounts are often favored, these two bottles are the Carlyle products to look at, and our seniors guide covers the field.

Time release is about the curve, not the amount, and Carlyle only offers the curve at a high amount. The Carlyle Melatonin 10 mg Time Release is a swallowed tablet formulated to release its 10 mg over several hours. The title's phrase is "all night support," which is the positioning, not a proven outcome; immediate-release melatonin is about falling asleep, and time-release is marketed for people who wake in the night. $9.99 divided by 180 is about 5.6 cents a night.

Carlyle's other high-amount formats are a 10 mg liquid (2 fl oz berry drops, $6.99) and 10 mg gummies (180 count, $16.99, about 9.4 cents per gummy before serving size). The general guidance that lower amounts are worth starting with applies to every one of them; melatonin hangover and grogginess explains why the 10 mg tier is the most complained about.

A softgel for people who dislike tablets, at an amount that needs the usual caveat. The Carlyle Melatonin 10 mg Softgels come 300 to a bottle at $12.49, about 4.2 cents a night, and the title calls it extra strength support for adults. Softgels are swallowed with water; they are neither faster nor slower than a tablet in any way a label claims, and we make no efficacy comparison between formats.

Two more Carlyle blends belong in this part of the line: a 10 mg tablet with L-theanine (270 count, $9.99) and a 10 mg capsule with ashwagandha (120 count, $8.98). Neither title publishes the amount of the added ingredient, so we describe them only as labeled, and both are covered against the field in best melatonin with L-theanine and best melatonin with ashwagandha.

When a pharmacy brand matches a value brand on price, the pharmacy brand wins. Nature's Bounty Melatonin 3 mg Quick Dissolve comes 240 to a bottle at $7.74, about 3.2 cents a night. Carlyle's 3 mg Fast Dissolve is about 4 cents; its 5 mg is about 3.3 cents. Same format, same class of amount, a brand with a much longer record.

The Nature's Bounty line also includes 5 mg Softgels (90 count, $6.59, about 7.3 cents) as the moderate-amount answer to Carlyle's 10 mg softgel, and the whole line is in the Nature's Bounty melatonin review. The full cost-per-night field is best cheap melatonin.

This is what Carlyle is undercutting, so it belongs on the table. Natrol Melatonin 5 mg Fast Dissolve is the strawberry tablet on every pharmacy shelf, 90 count at $8.96, about 10 cents a night. It leads our overall best melatonin ranking, and the Natrol melatonin review sorts its whole line.

Natrol also goes lower than Carlyle in the same format: its 1 mg Fast Dissolve (90 count, $6.97) is a low amount in a no-water tablet, which Carlyle only offers as a swallowed tablet. The head-to-head on cost is in best cheap melatonin.