Dexmethylphenidate
"I have Bipolar and ADD, the antidepressants compromised my ability to focus and think cogently. I tried ritalin and adderall but with little improvement. Focalin gives me a good 4 hours of ability to concentrate on cognitively demanding tasks. I'm a college professor and I can vary the dosage slightly depending on the demands of my day/tasks with doctor's approval. This med. works very well, but wears off after about 4 hours and can leave me feeling drained. Overall, it's really helpful. Has not affected or caused any mania."