t start at as high a dosage as you did - I started with the
Lamictal starter
pack 25 mg, then 50 mg, then 100, and stabilized on that (it took a month) then went to 200mg, where I really felt stable at 200mg. All together, it took me about 2 months, but began to feel the effects of being stable at about 3 weeks.
It affects everyone differently, and with you jumping right into 100mg, I can't say for sure. Honestly, I have been told that 200mg is the maximum dosage!