I've been on lamotrigine for bipolar 2 for 3 weeks now. I started at 25mg for one week, 50mg for one week, and now 75mg for one week. Tomorrow I am starting 100mg, which my doctor thinks my therapeutic dosage would be. (I'm a 24 year old woman). So far, i feel no difference. I dont have worsening, or better symptoms. I'm on no other medication. Hoping for a change soon.