Karousel, some of the drugs we take make it even harder to think. I am taking few now,
but when I first had an MS dx I was tried on several things which made it even harder to do things. Baclofen made me run into walls, as I didn't have enough eye/body coordination to sense the walls approaching. Several anti-depressants made me more depressed because they slowed almost all functions, as well as increasing spasticity. I take tiny amounts of Klonopin and Propanalol, and these do not slow me much, or interfere much with thinking.