tecovirimat will increase the level or influence of modafinil by affecting hepatic enzyme CYP2C19 metabolism. Use Caution/Observe. Tecovirimat can be a weak inhibitor of CYP2C8 and CYP2C19. Keep an eye on for adverse results if coadministered with sensitive substrates of those enzymes.The regulation of modafinil being a doping agent is controversia