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The chemical name of fosphenytoin is 5,5-diphenyl-3-[(phosphonooxy)methyl]-2, 4-imidazolidinedione disodium salt.
Solution for parenteral administration only.
Each fosphenytoin sodium (Aurantin) vial contains 75 mg/mL fosphenytoin sodium (Aurantin) (hereafter referred to as fosphenytoin) equivalent to 50 mg/mL phenytoin sodium after administration.
IMPORTANT NOTE: Throughout all fosphenytoin sodium (Aurantin) product labeling, the amount and concentration of fosphenytoin is expressed in terms of phenytoin sodium equivalents (PE). The weight of fosphenytoin is expressed as phenytoin sodium equivalents to avoid the need to perform molecular weight-based adjustments when converting between fosphenytoin and phenytoin sodium doses. Fosphenytoin should always be prescribed and dispensed in phenytoin sodium equivalent units (PE). (See Dosage & Administration).
