The TSA website clearly states that yes, packing vitamins is allowed in both your carry-on bag and checked baggage. [7] As long as they are in solid form, such as capsules, tablets, or gummies, you are permitted to pack as many supplements as you like, and they don't have to be labeled.

Yes, you can absolutely take supplements in your hand luggage on both domestic and international flights in 2026. Solid supplements—such as pills, capsules, tablets, and gummies—are not subject to quantity restrictions and do not need to be in their original packaging, although keeping them labeled is recommended to avoid delays during manual inspections. If your supplements are in powder form and exceed 12 oz (350 ml), you must place them in a separate bin for X-ray screening, as they may require additional testing. Liquid supplements, however, must comply with the standard 3-1-1 liquids rule (3.4 oz / 100 ml or less) unless they are clearly marked as "medically necessary," which may allow for larger quantities subject to officer approval. Generally, packing solids is hassle-free, but declaring any large powders or liquids to security staff upfront is the best way to ensure a smooth screening process.