I was switched to klonopin from ativan. I noticed with the ativan i had to take it more often and it stopped working. My doctor said klonopin is longer acting and i dont need to take more for a result. I was prescribed 1mg ativan 3 times a day. Now the klonopin is .5 twice a day, how does this compare to ativan, for anxiety? She said i need to take the Klonopin everyday, with the ativan it was as needed. Im a Little confused.