The story
Probably from gem- (of unknown origin) + -fibrate (“clofibrate derivative”) + -o- + -zil (“alteration of xylene”).
Etymology from Wiktionary, CC BY-SA 4.0.
gemfibrozil
Today it means: A drug C₁₅H₂₂O₃ that regulates blood serum lipids and is used especially to lower the levels of triglycerides and increase the levels of HDLs. Full definition →