I'm prescribed klonopin 1-3 MG daily or as needed and also take activating meds. I find that klonopin definitely decreases the activating effects of the other medication. Ultimately how much its decreased depends on how anxious I am when i take the klonopin - sometimes it just has a balancing effect while other times I feel slowed down. I dont take the same dosage of klonopin every day though and very rarely take 3MG in one day, so I may feel effect from it. I'd think that since you've been taking klonopin so long time that you may have built up enough tolerance where it may not make too much difference. It also depends on what the stimulating med is. I take up to 60 mg Adderral a day and Prozac (which is considered stimulating) so that is a lot. Maybe you could try reducing it a tiny bit just to see if you notice any changes?