I use klonopin as needed. It makes me very sleepy. i found that I am quite sensitive to drugs in general so I reduced from .5 to .25

This lower dose is more easily tolerated by me. I can still drive and function on it but it lasts a long time and will till be in my body hours later.

If I take .5 it is difficult for me to function sharply!

What dose are you on? Can you lower it or cut it in half? Try it at different times?