Lipitor may cause a variety of side effects, the most common being digestive problems and body aches. The digestive problems can include: diarrhea, constipation, gas and bloating. Aches can be in the joints, around the eyes and cheeks, headaches or pain upon urinating. Developing a runny nose is another common side effect. If any of these side effects persist or become severe, you should consult your doctor. Similarly, you should consult your doctor immediately if any of the less common side effects develop. These include: feeling extremely tired or fatigued; nausea or lack of appetite; coughing, wheezing or hoarseness; hives, rash or itching; feeling sharp pains in the chest or upper right abdomen; fever, muscle weakness, dizziness or other flu-like symptoms; problems with breathing and swallowing; whites of the eyes turning yellow; dark-colored urine; bleeding, blistering or bruising for no apparent reason; and swelling of any part of the face, mouth or limbs.