Butabarbital and olopatadine intranasal each enhance sedation. Avoid or Use Alternate Drug. Coadministration raises possibility of CNS despair, which can result in additive impairment of psychomotor functionality and lead to daytime impairment. butabarbital will reduce the extent or result of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Monitor. but... https://battistaa345ieb2.blogdun.com/profile