Lapaquistat (T-91485), a cholesterol biosynthesis inhibitor, is the active metabolite of TAK-475. Lapaquistat can decrease statin-induced myotoxicity in lipid-lowering therapy[1].
[1]. Nishimoto T, et al. Comparing myotoxic effects of squalene synthase inhibitor, T-91485, and 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitors in human myocytes. Biochem Pharmacol. 2003 Dec 1;66(11):2133-9.