Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

A very small number of people taking simvastatin may have mild memory problems or confusion. If these rare effects occur, talk to your doctor.

Rarely, statins may cause or worsen diabetes. Talk to your doctor about the benefits and risks.

This drug may rarely cause muscle problems (which can rarely lead to very serious conditions called rhabdomyolysis and autoimmune myopathy). Older adults and Chinese people may be at higher risk. Tell your doctor right away if you develop any of these symptoms during treatment and if these symptoms last after your doctor stops this drug: muscle pain/tenderness/weakness (especially with fever or unusual tiredness), signs of kidney problems (such as change in the amount of urine).

This medication may rarely cause liver problems. Tell your doctor right away if you develop symptoms of liver problems, including: nausea/vomiting that doesn't stop, yellowing eyes/skin, dark urine, stomach/abdominal pain.

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.