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Common simvastatin side effects may include: 1  headache; 2  constipation, nausea, stomach pain; or. 3  cold symptoms such as stuffy nose, sneezing, sore throat.
Some people develop liver-related side effects while taking Lipitor. As with any medication, there are a number of possible side effects that can occur while taking LipitorÂ® (atorvastatin calcium). Many of these potential Lipitor side effects can affect the liver, including: 1  An increase in liver enzymes. 2  Hepatitis, which is an inflammation of the liver that can cause tiredness or a general feeling of illness. 3  Jaundice, or yellowing of the skin or eyes that can occur from the liver being damaged.  Liver failure.