✋ Hand luggage
Tablets and capsules: no restriction. Liquid supplements: max 100ml in 1-litre clear bag. Powders over 350ml may be subject to additional screening.
🧳 Hold luggage
Any quantity permitted.
Based on TSA guidance for United States. Official rules ↗
Vitamins / supplements rules by country
How carry-on and checked-bag rules for vitamins / supplements compare across the 14 countries we cover.
Vitamins / supplements
Common questions
If your liquid supplement exceeds 100ml and you forget to pack it elsewhere, screeners will ask you to either pour it out, leave it behind, or return it to check-in. Tablets and capsules in any quantity sail through with no issues. Supplement powders over 350ml may trigger additional screening but are not prohibited.
The core rules are consistent worldwide: tablets and capsules are unrestricted, and liquids follow the standard 100ml carry-on limit. The main variation worth knowing is that some airports in the EU and Australia apply stricter additional screening to large supplement powder containers, treating them similarly to other bulk powders.
Carrying a month or more of supplements is perfectly normal and screeners will not question the quantity of tablets or capsules. Liquid supplements may draw a second look simply because they go through the liquids check, but a straightforward explanation that they are vitamins is all you need.
Keep tablets and capsules in your bag as normal — they need no special preparation. If you carry liquid supplements, place them in your 1-litre clear liquids bag before reaching the checkpoint. Decanting powders into unlabelled bags can attract extra scrutiny, so travel in original or clearly labelled containers.
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Browse all Medical →Based on official United States security guidelines. Rules vary by airline and route — always verify with your carrier before travel. · Rules last verified May 2026.