I was prescribed Topamax for PTSD (we think) 25mg BID its the 1st med to help with anger/irritability with no side effects so my Psych upped me to 100mg at bed time. He said it doesn't really make a difference how often daily you take it but I see everywhere it Rx'd BID to TID but the half life is 21-23 hours from what I found so as long as you took it the same time each day wouldn't my Psych be correct? My
lisinopril has a half life of 12-13 hours and I only take that once a day