What side effects may I notice from receiving Simvastatin?

Side effects that you should report to your doctor or health care professional as soon as possible:

-allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
-confusion
-joint pain
-loss of memory
-redness, blistering, peeling or loosening of the skin, including inside the mouth
-signs and symptoms of high blood sugar such as being more thirsty or hungry or having to urinate more than normal. You may also feel very tired or have blurry vision.
-signs and symptoms of muscle injury like dark urine; trouble passing urine or change in the amount of urine; unusually weak or tired; muscle pain or side or back pain
-yellowing of the eyes or skin

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

-constipation
-diarrhea
-dizziness
-gas
-headache
-nausea
-stomach pain
-trouble sleeping
-upset stomach

This list may not describe all possible side effects for Simvastatin. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.