I wouldn't bet that the ships' pharmacy would have Lamictal but if worse came to worse I am sure you could pick some up at a port. My son has Crohn's disease and we like you are careful to pack extra meds just in case. I have transferred prescriptions from my store to other places (including the carribean) for emergencies as such. Good Luck. Labe Young, RPH
(not the cruisemates RPH but another cruising fool!)