| Drug | The main side effects | Important but very rare side effects | Reference |
| Topiramate | Cognitive difficulties, tremors, dizziness, ataxia, headache, fatigue, gastrointestinal upset, and renal calculi | | Dichter and Brodie [12] | Tiagabine | Confusion, dizziness, gastrointestinal upset, anorexia, and fatigue | | Oxcarbazepine | Dizziness, diplopia, ataxia, headache, weakness, rash, and hyponatremia | | Zonisamide | Somnolence, headache, dizziness, ataxia, and renal calculi | | Vigabatrin | Behavioural changes, depression, sedation, fatigue, weight gain, and gastrointestinal upset | Psychosis | Clobazam | Sedation, dizziness, irritability, depression, and disinhibition | | Felbamate | Irritability, insomnia, anorexia, nausea, and headache | Aplastic anaemia and hepatic failure | Lamotrigine | Rash, dizziness, tremor, ataxia, diplopia, headache, and gastrointestinal upset | Stevens–Johnson syndrome | Gabapentin | Somnolence, fatigue, ataxia, dizziness, and gastrointestinal upset | | Phenytoin | Phenytoin encephalopathy, psychosis, locomotor dysfunction, hyperkinesia, megaloblastic anaemia, decreased bone mineral content, Stevens–Johnson syndrome, toxic epidermal necrolysis, immunoglobulin. A deficiency, gingival hyperplasia, dress syndrome (drug reaction accompanied by eosinophilia and systemic symptoms), cardiovascular collapse, hypotension, arrhythmias, hydantoin syndrome in newborns, and purple glove syndrome | |
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