I drink quite a lot of caffeine (four or five strong coffees most days) and i’ve not had any problems, or noticed much of a difference on terms of ‘over caffinated’ symptoms compared to pre-Methylphenidate.

In fact, the one time I tried to cut back on coffee (I’d been really ill for a week and had stopped drinking coffee, so I decided to not restart the habit) I found that without coffee my medication didn’t seem as effective. After two weeks of no caffeine I wasnt feeling caffeine withdrawals, I wasn’t tired in the morning or craving coffee, but I just felt like i was on too low a dose for my ADHD. My attention, focus, willpower were all back to being a struggle. Then I read somewhere online saying that this could happen, and that caffeine increased the effects of the meds. For some people, I guess that means that too much coffee would lead to an overly strong dose. But for me, I’d much rather have a couple of cups of coffee than have to move to a higher dose of Ritalin. So I started having coffee again and things went back to normal.