The story
Probably from sim- (“alteration of synthetic”) + -vastatin (“HMG CoA reductase inhibitor”).
Etymology from Wiktionary, CC BY-SA 4.0.
simvastatin
Today it means: A semisynthetic drug C₂₅H₃₈O₅ that decreases the level of cholesterol in the bloodstream and is derived from a compound produced by a mold (Aspergillus terreus). Full definition →