Melatonin
Melatonin pills and gummies have no quantity limit in carry-on or checked bags; liquid melatonin follows the standard 3-1-1 rule.
Carry-on
Allowed
Checked
Allowed
Carry-on details
Allowed. Melatonin tablets and gummies are solid, so they aren't limited by the liquids rule and have no quantity limit in carry-on. They don't need to be in the quart-size liquids bag, and original packaging isn't required, though a labeled bottle can avoid extra questions. Liquid melatonin is different — it's an over-the-counter sleep aid, not a prescribed medication, so it generally follows the standard 3.4 oz (100 ml) per container / quart-bag rule rather than the medical liquids exception.
Checked-bag details
Allowed without restriction, in pill, gummy, or liquid form.
Special instructions
Loose gummies or unlabeled pills can look ambiguous on an X-ray; keeping them in their original container speeds up screening.
Related rules
FAQ
- Is there a limit on how many melatonin gummies I can bring?
- No. Melatonin gummies and tablets are solid, so TSA places no quantity limit on them in carry-on or checked baggage.
- Does liquid melatonin count as a medically necessary liquid?
- Generally no. Unlike a prescribed liquid medication, over-the-counter liquid melatonin typically has to follow the standard 3.4 oz container and quart-bag rule in carry-on.
Related items
Source: TSA — What Can I Bring? · Last verified: 2026-07-31
Final decision rests with the security officer at the checkpoint.