Allergen labeling law does not apply to drugs at all. Here is what that means for risk versus effort.
The FDA issued draft guidance on gluten in drug products in December 2017 recommending a voluntary statement. As of 2026 it remains draft, never finalized, more than eight years on.
The most useful number the FDA has published: wheat starch and other wheat-derived excipients would contribute no more than 0.5 mg of gluten to a unit dose. That is less than a 30 g serving of food labeled gluten-free.
The problem is the verification burden rather than the danger itself. Your pharmacy can substitute a different generic manufacturer at any refill without telling you, and the same drug can be gluten free from one maker and not from another. A scoping review of 1,239 medications found only 5 of 100 manufacturers had a gluten-free production policy, and 41% of pharmacists rated their own celiac knowledge as poor or limited.
The practical approach: ask your pharmacy to flag manufacturer changes on refills, and call the manufacturer directly for anything you take daily. It is tedious, and it is currently the only reliable method.
This site answers the question you knew to ask. The app answers the one you didn't: the barley malt in a rice cereal, the wheat starch in a gummy. Scan the barcode, or photograph the panel when the barcode isn't in any database, and CiCi shows which words on the label produced the answer.
14 days free, then $29.99 a year. Cheaper than Fig, and it does what three separate apps do. This website stays free forever either way: every answer on it, permanently, with no account.