De almindeligste bivirkninger af Zonegran (som ses hos flere end 1 ud af 10 patienter) er appetitløshe - d, uro, irritabilitet, omtågethed, depression, forstyrrelse i samordningen af muskelbevægelserne, svim - melhed, hukommelsessvækkelse, døsighed, dobbeltsyn og mindsket indhold af bikarbonat i blodet.
The most common side effects with Zonegran (seen in more than 1 patient in 10) are anorexia (loss of appetite), agitation, irritability, confusion, depression, ataxia (inability to co-ordinate muscle movements), dizziness, memory impairment, somnolence (sleepiness), diplopia (double vision) and decreased blood bicarbonate levels.