Yes, you can import dietary supplements into the U.S., but they are subject to strict oversight by the FDA and CBP. For personal use, travelers can generally bring a 90-day supply of supplements in their luggage, provided they are in their original packaging and clearly labeled. However, the FDA prohibits the importation of products containing illegal ingredients (such as high levels of lead or unapproved pharmaceutical additives) or those making unsubstantiated medical claims to "cure" diseases. In 2026, regulations have tightened through the Dietary Supplement Listing Act, which requires more transparency from manufacturers. If you are importing supplements commercially, you must comply with the FSVP (Foreign Supplier Verification Program) and ensure the products meet U.S. safety and labeling standards. Always declare these items at customs to avoid fines or seizure.