Can cause sleep and visual disturbances
drowsiness
dizziness
vertigo
lethargy
headache
tremor
ataxia
mild paradoxical reactions (e.g. excitement
stimulation of affect)
minor diffuse skin rashes (e.g. morbilliform
maculopapular and urticarial)
nausea
oedema
slurred speech
altered libido
GI symptoms. Rarely
transient anterograde amnesia or memory impairment
syncope
leucopenia and hepatic dysfunction including jaundice.