The headaches could be withdrawal symptoms. I take it 1 mg at night for anxiety. When I started taking it I started with .25 mg then moved up to .5, then .75 then 1 mg because my pdoc wanted to taper me on it. From our conversations when it comes time to get off of it (at leas the goal is at some point in the near future to get off), I'd taper off the klonopin in the reverse - down .75, then .5, then .25 and none. So we could judge how my anxiety levels were and not worry about withdrawal.