Butabarbital and olopatadine intranasal equally improve sedation. Stay clear of or Use Alternate Drug. Coadministration increases hazard of CNS melancholy, which can lead to additive impairment of psychomotor efficiency and trigger daytime impairment. butabarbital will lessen the level or influence of fosphenytoin by affecting hepatic enzyme CYP2C9/10 metabolism. Use Caution/Monitor. https://genec789bda3.wikilowdown.com/user