Lexapro fioricet claritin. . . . . . Effexor XR - Elavil - Fluoxetine - Lexapro . . . Allegra D - Clarinex - Claritin-D - Flonase . Fioricet may cause you to become drowsy or less alert . . . . . . . . . . . . Claritin-D - Cleocin-T Gel - Colchicine - . . . . Fioricet may cause you to become drowsy or less alert . Allegra D - Clarinex - Claritin-D - Flonase . Allegra D - Clarinex - Claritin-D - Flonase - Nasacort AQ . . . . levels of these drugs in the body, making them less effective:Loratadi... more