Hypothyroid medications manufactured by Westminster Pharmaceuticals have been recalled after it was discovered that one of the company’s Chinese suppliers failed to meet U.S. Food and Drug Administration (FDA) standards, CNN reports.

The oral tablets contain levothyroxine (LT4) and liothyronine (LT3), which are both synthetic hormones used to treat thyroid conditions.

The medicine was recalled as a precaution after it was discovered during a 2017 FDA inspection that the Chinese supplier in question, Sichuan Friendly Pharmaceutical Co., was not practicing good manufacturing practices.

However, patients with serious thyroid conditions shouldn’t throw out their pills just yet. No adverse effects from the medication have been reported, and the risk of not taking the medication outweighs the risk of taking a recalled pill.

According to the FDA, “Because these products may be used in the treatment of serious medical conditions, patients taking the recalled medicines should continue taking their medicine until they have a replacement product.”

For more information on the specific lots and products in question, visit the FDA’s website.

[h/t CNN]