If falling asleep is your challenge, this liquid **melatonin** delivers 2.5mg per 2-teaspoon dose — squarely inside the 0.5–5mg range used in sleep-onset research, and a modest, sensible amount rather than a heavy 10mg pour. Taken 30 to 60 minutes before bed, that's enough to help shorten the time it takes to drift off and nudge your sleep-wake cycle back on schedule.

The liquid format is the real differentiator here: you can take less than a full dose to dial in the smallest amount that works for you, and a liquid may kick in a little faster than a tablet. That flexibility makes it a good fit if you want a low, adjustable dose for occasional trouble falling asleep rather than a fixed high-dose pill.

BioStacks
Natrol

Liquid Melatonin, Berry, 2.5 mg, 8 fl oz (237 ml)

Liquid · 2 Teaspoons (10 ml)

iHerbAmazon

Best for

Sleep

Ingredients (1)

Melatonin

100%

Dose

2.5 mg

Target

0.5–5 mg

Form

—

Other Ingredients (5)

Grain Alcohol (ethanol)Solvent

Food-grade ethanol used as an extraction or carrier solvent.

Natural FlavorsFlavor

Broad regulatory category of flavor constituents derived from natural sources. Composition is proprietary and not disclosed — 'Natural Flavors' can include several hundred different compounds depending on the target flavor profile, including hexane-extracted constituents and proprietary carrier solvents. 'Natural' is a regulatory definition (21 CFR §101.22), not a safety guarantee.

Citric AcidAcidulant

Natural acid derived from citrus fruits

Purified WaterSolvent

Water meeting USP specifications used as solvent/vehicle in gummies and liquids

Stevia ExtractSweetener

Zero-calorie natural sweetener extracted from the leaves of Stevia rebaudiana

How to Take It

Best taken in the evening

Take 30–60 minutes before bed. It's a circadian signal, not a daytime supplement.

With or without food

On the label

Shake well before each use. Adults, take 2 teaspoons (10 ml), 30 minutes before bedtime. May be taken directly.

General guidance based on the ingredients, not a substitute for the label or your doctor.

Price Check

$13.86

$10$20

Near the median of 203 melatonin supplements

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. studied ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

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