What is the most common side effect of atorvastatin?

The most commonly reported atorvastatin side effects include: muscle pain, joint pain, common cold symptoms, diarrhea, urinary tract infection, upset stomach and nausea, and muscle spasms. Less common atorvastatin side effects include: liver damage, severe muscle damage, blood glucose (sugar) changes, kidney damage, memory problems, hair loss, peripheral neuropathy (nerve pain), tendon rupture, chest pain, loss of appetite, and headache. Keep in mind, everyone responds differently to medication. View original source