sparsentan will reduce the level or outcome of modafinil by influencing hepatic enzyme CYP2C19 metabolism. Use Caution/Watch. Sparsentan (a CYP2C19 inducer) decreases publicity of CYP2C19 substrates and decreases efficacy associated with these substrates.In combination with impairing Bodily, cognitive, and psychosocial functioning, too much sleepin