BioStacks
GNC

Melatonin 5 mg

1 Tablet · 60 servings · $0.30/serving

iHerbAmazon

Best for

Sleep

Ingredients (2)

Melatonin

100%

Dose

5 mg

Target

0.5–5 mg

Form

—

Calcium

45 mg

Trace amount — not scored

Other Ingredients (4)

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

Dicalcium PhosphateBinder

Calcium and phosphorus compound used as binder

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

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

As a dietary supplement, take one tablet before bedtime. Do not exceed recommended dosage in any 24-hour period.

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

Price Check

$17.99

$10$20

Pricier than 78% of 166 melatonin supplements

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and 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. clinical 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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