I am 38 and taking it for TN with the 1st and 2nd branches affect...

I am 38 and taking it for TN with the 1st and 2nd branches affected. At 600mg I noticed mild hyperactivity. This subsided but was not enough to alleviate the pain. At 900mg I had an increased level of hyperactivity with about 2 weeks of sleepless nights. This also eventually subsided and the pain was gone. This was good for approximately 6 months. Then the 3rd branch started up and I was told to increase the level to 1200mg/day. The hyperactivity was worse. Then came the fits of crying for no reason (I NEVER cry). I gained 10 lbs. and much anxiety. I came close to driving my vehicle off of a bridge but made it to my mom's house where I feel into a crying fit. I couldn't remember where I left anything and this was affecting my work. It got so bad I was having my husband drive to work because I couldn't concentrate and almost had a few accidents. I completely lost my sex drive which was horrible. This all happened within 2 weeks of increasing it. I know it is not good to just quit taking something but I had to. Within 2 days I was getting better. I am now on 700mg which is not enough to help with the pain.