Simvastatin Side Effects
Common and serious side effects of Simvastatin (Simvastatin) — what to expect and how to manage them.
Common Side Effects
- Muscle aches or pain (myalgia)
- Joint pain
- Headache
- Nausea
- Diarrhea or constipation
- Elevated liver enzymes
Serious Side Effects
Seek immediate care if severe- Rhabdomyolysis (severe muscle breakdown — rare, seek emergency care)
- Liver damage
- New-onset diabetes
- Memory or cognition changes (rare)
- Drug interactions (especially with CYP3A4 inhibitors)
Managing Side Effects
- Report unexplained muscle pain, weakness, or brown urine immediately
- CoQ10 supplement may reduce muscle aches (evidence mixed)
- Avoid grapefruit juice with some statins
- Evening dosing may be slightly more effective for some statins
- Regular liver tests not routinely required but check at baseline
What Your Doctor May Monitor
LDL cholesterolLiver enzymes (baseline)CK if muscle symptomsBlood glucose
Simvastatin Cash Price
Simvastatin cash prices start from $5 when pharmacies compete on Script Unlock — up to 82% below retail. No insurance required.
Compare Simvastatin PricesMedical Disclaimer: This information is for educational reference only. Side effects vary by individual, dose, and other medications. Always consult your healthcare provider for personalized medical advice. Do not stop or change your medication without medical guidance.