Hi, I have been put on a number of meds, following a grand mal seizure caused by encephalitis . Im on dilantin , slow release oxycontin, and doc has now got me on epilim 100mg, then increaae to 200 next week. I also am on efelexor anti depressant. I am so scared of the epilim cause I keep reading it causes weight gain. I have recently lost 20 kgs just from coming off nexium, and switched to zantac (I have scleroderma also). My doctor is great, and he suggested the epilim will help with the excruciating headaches as when I had the seizure (first one in my life) I smashed my head open, bruised my brain and had bleeding on the brain. All I care about is gaining weight, and on this low dose, will it be a problem?