Yes, I have to agree. I have been taking Concerta 72 mg for over 10 yrs. & have never had to increase the dosage or had any kind of "speeded up" feeling, but I definitely feel the benefits as far as focus & concentration.

I also take Provigil (same dosage for 10 yrs. also) due to side effects of bipolar meds of excessive daytime sleepiness to the point of falling asleep while driving. Again, I've not had to increase the dosage or felt any "speediness" feeling since being on it for 10 yrs.

I was on Xananx (1 mg) at night for anxiety to help me sleep for 17 yrs., but was changed to Klonopin recently. Again, I don't want to take more than prescribed as all they do is make me tired. I am "allowed" to take Klonopin during the day if needed for anxiety, but I don't want to be tired during the day so I practice techniques I'm learning in my DBT class..--Suzy P.S. However, I do have a friend who is going through terrible withdrawals trying to get off Xanax that is the controlled release where there is some in your system all the time. I don't take that kind. He is going through hell even though he is tapering it with a doc's help.