Claritin & Penicillin Question: Have their been any substantiated or unsubstatiated claims of adverse drug interactions between claritin and penicillin?
Claritin is the brand name of the generic medication loratadine, and is used for its antihistamine effects in the treatment of allergies. Any medication that can effect liver metabolism of this medication can alter its blood level. Penicillin is cleared predominantly by the kidney and the Physician s Desk Reference does not list penicillin as a medication to be avoided in patients on claritin. However, whenever you are taking medications, in particular multiple medications, follow up with your physician on a regular basis is important, so as to assess the response you are having from the therapy, as well as to determine if any drug interactions or side effects are occurring.