I am on Benicar for my high blood pressure and i've been told by the doc to take .25 of Alprazolam as needed. so i just break a .5 pill in half. Well like and idiot i took a full pill of the alprazolam and broke my Benicar in half when i was supposed to do the opposite. Is .5 a dangerous dose? Other than a slight buzz i feel fine. I'm not freakin but i took twice the anxiety meds i needed at the same time as my BP meds. I'm 220lbs so i think i'll be alright im just buzzed. Its been about 31'2 hours so i guess if i was gonna be in trouble by it, it would have happened by now.