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biological

Judged: two independent readers; copy check clear.

phenytoin

phenytoin Phenytoin is a hydantoin-derived antiepileptic medication used to reduce seizures without causing sedation.

Phenytoin is a hydantoin-derived antiepileptic medication used to reduce seizures without causing sedation. It appears to work by helping stabilize nerve activity in the motor cortex so seizure activity is less likely to spread, and it may also relax muscles by lowering muscle spindle sensitivity to stretch.