Ketek (generic: telithromycin) is a prescription medication used to treat pneumonia caused by bacteria. Ketek belongs to a group of drugs called ketolide antibiotics, which work by killing bacteria.

This medication comes in tablet form and is taken once a day, with or without food.

Common side effects of Ketek include nausea, headache, and dizziness. Do not drive or operate heavy machinery until you know how Ketek affects you.