The drawback is that, like many seizure meds, lamictal is very expensive (one month of 90 200mg tablets of
lamictal costs ~$530/month;
for lamictal XR, the cost is about $1,900) . Luckily I get help paying (only pay a few dollars, actually), but it is rediculous to have such necessary meds cost this much. Sometimes your doc can also give you a large bunch of samples....I managed to get about 6 months worth of samples, before I got help paying for the XR.