The most commonly observed side effects
seen in association with lamictal are dizziness, ataxia, somnolence, headache, blurred vision, nausea, vomiting, and rash. The possibility of decreased contraceptive efficacy in some patients is also considered. Dosage adjustments will be necessary for most patients receiving estrogen-containing oral contraceptive preparations. The crabbiness may be due to the hormonal changes as a result of the birth control pills.