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HMG-CoA reductase inhibitor + cholesterol absorption inhibitor

Simvastatin with ezetimibe

Brand names: Inegy

Adult dose

Dose: 10/10mg, 10/20mg, 10/40mg or 10/80mg PO ON (note simvastatin 80mg only continued if used >12 months without myopathy)
Route: PO
Frequency: ON

Dose adjustments

Renal

Use cautiously if eGFR <30

Clinical pearls

  • Hypercholesterolaemia when monotherapy inadequate
  • Atorvastatin/rosuvastatin preferred 1st-line per NICE NG181

Contraindications

  • Active liver disease
  • Pregnancy/breastfeeding
  • Concurrent strong CYP3A4 inhibitors / fibrates / amiodarone (with simva 40-80mg)

Side effects

  • Myalgia
  • Rhabdomyolysis
  • Transaminitis
  • GI upset
  • Headache

Interactions

  • Strong CYP3A4 inhibitors (limit simva to 20mg or avoid)
  • Amiodarone/diltiazem/verapamil (limit simva)
  • Fibrates
  • Ciclosporin

Monitoring

  • LFTs
  • CK if symptomatic
  • Lipids

Reference: BNF; NICE NG181; MHRA; https://bnf.nice.org.uk/drugs/simvastatin-with-ezetimibe/. Verify against your local formulary and the latest BNF before prescribing.

Related

Curated clinical cross-links plus same-class fallbacks.