Methylphenidate
"I have bipolar disorder but mainly suffer with depressive episodes which can last up to 7 months . I had high hopes for this drug as I am drug resistant now and have tried every antidepressant and  mood  stabiliser. I expected it to  be a stimulant! I've only been on it 2 weeks and my shrink says it needs 6 weeks to get into my system but all my research points to a stimulant working within hours . I'm on 10mg 3 x a day and all it does is make me sleep! Not very stimulating! This dose seems to work for most people, maybe I need a bigger dose but overall so far I feel worse because I hardly have the energy to get out of bed and I feel more stimulated by caffeine, side effects for me were intense headaches and nausea, lack of appetite."