The U.S. Food and Drug Administration (FDA) banned the import of more than 30 generic medications—including HIV meds—produced by Indian pharmaceutical company Ranbaxy, citing safety concerns in two of its factories, The Associated Press (AP) reports.

According to the article, FDA inspections earlier this year found violations that could potentially lead to contamination, allergic reactions and other problems. As of September 16, Ranbaxy had not corrected them. The pharmaceutical giant has been under close supervision by the FDA since 2006, when agency inspectors initially found violations in one of its factories.

The AP reports that enough generic manufacturers produce the blocked drugs to ensure a continuous supply, with a few exceptions. Ranbaxy is the sole manufacturer of ganciclovir capsules, which is used to treat cytomegalovirus, common in people living with HIV. The FDA will allow Ranbaxy to continue importing that drug under close supervision.