Where is levothyroxine made?

Who manufactures levothyroxine in the U.S. and where is it made?

Levothyroxine is produced by multiple drug companies across different manufacturing sites in the U.S. and internationally. The exact “where made” depends on the specific brand and the manufacturer listed on the product label (and sometimes the specific lot/manufacturing site shown by the pharmacy or on packaging).

Does the “made in” location vary by brand or generic?

Yes. Brand-name levothyroxine and different generic manufacturers can use different manufacturing facilities. Even for the same drug strength, different companies (or different suppliers of the active ingredient) may result in different label locations.

What’s the fastest way to find the exact manufacturing location for your tablets?

Check the carton or bottle label for:
- The manufacturer’s name
- The “manufactured for”/“manufactured by” wording
- Any “made in” or address of the manufacturing site

If you share the brand name (or the manufacturer name printed on your bottle) and the strength (e.g., 25 mcg, 100 mcg), I can help you narrow down the likely manufacturer and the manufacturing information tied to that specific product.

Can you rely on online listings for “where it’s made”?

Online listings can be incomplete because levothyroxine products may change manufacturing sites over time. The most reliable source is the labeling for the exact product you have, because it reflects the manufacturing site for that specific item.