I take 1 mg of clonazepam 3x per day.

For some it can make you extremely drowsy - for me it is my saving grace. Unfortunately my doctor wants me to reduce - I'm not in favor of that right now.

Anyway I have experienced a 20-30 minute time frame for it to kick in and then I'm good for 5-6 hours.

I like it - have been on it for about two years.