Melatonin 3mg by Natrol

The verdict. Nine dollars for four months, and the most useful thing we can tell you is this: most people take far too much melatonin. The doses that perform best in research are around 0.5–1 mg, and the shelves are full of 5 mg and 10 mg tablets. Even this 3 mg tablet is worth splitting. That single piece of information is worth more than the product.

Who this is for

• You're crossing time zones and want to shift your body clock deliberately.
• Your sleep schedule has drifted late and you're trying to pull it back.
• Shift work has scrambled your timing.

Who should skip it

If your problem is staying asleep, melatonin is the wrong tool — it helps you fall asleep, not stay asleep. If you can't switch off mentally, that's a wind-down and anxiety issue, not a melatonin-deficiency one. Don't take it before driving. Talk to a doctor first if you're on blood thinners, blood pressure medication, or immunosuppressants, or if you're pregnant. And it's not for indefinite nightly use without a conversation.

What's actually in it

3 mg of melatonin per tablet. Melatonin isn't a sedative — it's the hormone that signals to your body that it's night. That distinction explains everything about how to use it: it's a timing signal, not a knockout drop.

Also worth knowing: US supplement melatonin is poorly regulated, and independent testing has repeatedly found actual content varying wildly from the label. Buying from an established brand is a partial mitigation, not a guarantee.

What the research actually looks at

Melatonin has real evidence for shifting circadian timing — jet lag and delayed sleep phase are where it genuinely performs. For general insomnia, effects are modest: meta-analyses tend to find people fall asleep several minutes faster and sleep a little longer. Meaningful, but nothing like a prescription sleep aid, and nothing like the marketing suggests.

And here's the counterintuitive part that most product pages won't tell you: higher doses don't work better, and may work worse. Low doses more closely mimic the body's own signal.

How we'd use it

Split the tablet — start with half or less. Take it 90 minutes to two hours before you want to sleep, not at bedtime; you're sending a signal, not flipping a switch. Then dim the lights, because bright light directly suppresses the thing you just took.

The honest trade-offs

• The dose is higher than optimal. Split the tablets.
• Grogginess the next morning is common, and usually a sign you took too much or too late.
• Label accuracy in this category is genuinely poor across the US market.
• It doesn't fix why you're awake — only when your body thinks night is.

Bottom line

Cheap, useful for the specific job of shifting your clock, and widely misused. Buy it for jet lag and schedule correction, take less than you think, and take it earlier than you think.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Nothing here is medical advice — talk to a qualified professional about persistent sleep problems, particularly if you take prescription medication or are pregnant or nursing.