12 letters · 15 points in Scrabble
noun an oral drug (trade name Lipitor) that is effective in lowering triglycerides; potent in reducing LDL cholesterol because higher doses can be given
originFrom ator- + -vastatin (“HMG CoA reductase inhibitor”). The prefix probably from Spanish atorar (“to clog”), wherein the verb suffix -ar was taken off. Thus, the role is "to inhibit the clogging (of cholesterol)".
Etymology from Wiktionary, CC BY-SA 3.0