Anxiety
"Indigogirl,
Switching from Ativan to Klonopin is very common. Due to the fact that Klonopin is 2x more potent tand lasts much longer also. 2mg Ativan = 1mg Klonopin. Ativan has a 12-18 hour half life, while Klonopin has a 24-50 hour half life. Ativan peaks within 30 minutes, while Klonopin peaks within 2 hours. If you were too sleepy with the switch, your Klonopin dose was too much. For me, Klonopin is the best all around benzo. I&#039;ve been on Xanax, Ativan, and Valium, Klonopin is the king of the class of Benzodiazepines."