COLLATERALI nistagmo, iperplasia gengiv
anemia megalobl, epatite, nefrite, linfoadenopatia, rachitismo
IDIOSINCRASIA AHS Antiepilectic drug hypersensitivity syndrome: febbre, rush, epatite, nefrite
TOSSICIatassia, discinesia, degeneraz cerebello
TERATOGENI: palatoschisi, labbro leporino