Nature Made Melatonin 5mg (300ct)
Best for: USP-verification shoppers, value buyers
The USP-verified melatonin — 300 tablets at a low price per tablet.
Nature Made's melatonin has USP verification (independent third-party testing for potency and purity). Each tablet contains 5mg melatonin and 45mg calcium; the 300-tablet bottle supplies 300 nights at one tablet a night.
Price & where to buy
Prices checked 2026-10-31Prices shown were last checked on 2026-10-31 and can change at any time — the price on the retailer's site at checkout is the one that applies. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product. As an Amazon Associate and affiliate we may earn a commission on purchases made through these links, at no extra cost to you.
How our prices work
We show the price at our recommended retailer as at our last check of that offer (2026-10-31) and, when Amazon reports one, its list price for comparison. Amazon prices come from Amazon's own product data service and are refreshed twice a day; each one shows the date and time Amazon gave it, and one older than 24 hours is replaced by “Check price”. Other retailers' prices are checked by hand and show the date of that check. Retail prices move constantly, so the price on the retailer's own page at checkout is the one that applies. More on Amazon prices
Should you buy it?
What we like
- USP-verified purity — rare in melatonin
- Cheap and everywhere
What to know before buying
- One strength only: every tablet is 5mg
- Each tablet also carries 45 mg calcium, so it is not melatonin alone
- A plain swallowed tablet, with no fast-dissolve or gummy option in this bottle
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At a glance
Compare with alternatives
Quick verdicts for the supplements most often considered alongside the Nature Made Melatonin 5mg (300ct).
Nature Made Melatonin 5mg (300ct) vs Doctor's Best High Absorption Magnesium Glycinate 200mg (240ct)
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Doctor's Best High Absorption Magnesium Glycinate 200mg (240ct) review →Nature Made Melatonin 5mg (300ct) vs Olly Sleep Gummies (3mg melatonin + L-theanine, 50ct)
The most popular sleep gummy on Amazon — 3mg melatonin + L-theanine + botanicals in blackberry flavor.
→ Pill-averse buyers
Olly Sleep Gummies (3mg melatonin + L-theanine, 50ct) review →Nature Made Melatonin 5mg (300ct) vs NOW Foods L-Theanine 200mg (120ct)
The best-value L-theanine — 200mg per capsule, GMP-certified, and $15.79 for 120 servings.
→ Theanine at the lowest cost per capsule
NOW Foods L-Theanine 200mg (120ct) review →Not sure which one is right for you?
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Thorne Magnesium Bisglycinate Powder (60 servings)
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Frequently asked questions
Is 5mg melatonin too much?
We don't publish dosing guidance — ask a pharmacist or your doctor.
Nature Made vs Costco Kirkland melatonin — which is better?
Both are USP-verified. Costco Kirkland is cheaper if you're a member.
Can I take melatonin every night?
We don't publish dosing guidance — ask a pharmacist or your doctor.
Nature Made melatonin vs Olly gummies?
Nature Made is 5mg melatonin tablets (each also lists 45 mg calcium). Olly gummies are 3mg melatonin plus L-theanine + botanicals. Nature Made is cheaper per dose; Olly tastes better but has added sugar.