What would happen if you took 700 mg of lamotrigine?

Potentially bad.: Most cases reporting lamotrigine exposures observed mild or no toxicity; however, large exposures were associated with severe CNS depression, seizures, cardiac conduction delays, wide complex tachycardia, and death. In adults with a serum concentration >25 mg/L, severe toxicity may occur. In patients ≤3.5 years of age, ingestions of ≥525 mg may produce severe CNS depression and seizures.

Am confused as to why you are asking this question. This is clearly a higher dose than routine. You are encouraged to repost additional information so we can put into context