Yep. I was on 100mg for almost a year (the highest legal dose). Wasn't effective enough for me. However, like you, I had OCD and was wary of the stimulants. I had previously tried Ritalin and Concerta, both of which had too many side effects and made me a bit more anxious. I've been on Focalin XR now for almost three years. It is also a stimulant but I have pretty much no side effects at all and it really helps with the ADHD symptoms.