Cholesterol Medication

Consider this scenario: Bob is a 52-year-old man who went to see his physician for a routine check-up. Bob’s doctor told him his cholesterol levels were slightly elevated and suggested cholesterol medication. Bob wondered how long he would have to take the medication, and whether there would be any side effects. Please answer the following two questions about cholesterol medications.

When people start taking cholesterol medications, how long is it usually recommended that they take them?
What is the most common side effect of medications designed to reduce cholesterol levels?