J Basic Clin Pharm. 2015 Sep;6(4):119-21. doi: 10.4103/0976-0105.168054.
Journal of basic and clinical pharmacy
T H Indu, Roopa Satyanarayan Basutkar
PMID: 26692739 PMCID: PMC4660484 DOI: 10.4103/0976-0105.168054
Hypersensitivity reactions with antiepileptic drugs (AEDs) are generally associated with aromatic AEDs. We present a case of hypersensitivity reactions followed by administration of phenytoin with diazepam and ranitidine in a patient with generalized tonic-clonic seizures. Antigen-antibody reactions or decreased levels of epoxide hydrolase are well known with phenytoin. Increased level of serum phenytoin causing toxicities due to competitive inhibition with diazepam on co-administration was also reported in the literature. Prevention of the adverse effects with AEDs is a multi-stage process, which requires implementation of preventive measures through careful monitoring and prompts interventions.
Keywords: Antiepileptics; hypersensitivity reaction; phenytoin