WebPhenytoin (Dilantin) Correction for Albumin / Renal Failure Corrects serum phenytoin level for renal failure and/or hypoalbuminemia. INSTRUCTIONS Use in patients with albumin … Webadministration, with a half-life of approximately 15 minutes. Fosphenytoin is also completely converted to phenytoin following IM administration and plasma total phenytoin concentrations peak in approximately 3 hours. Distribution: Phenytoin is highly bound to plasma proteins, primarily albumin, although to a lesser extent than fosphenytoin.

CEREBYX® - Food and Drug Administration

WebSince it undergoes non-linear elimination, phenytoin does not have a single, true half-life. Half-life varies with serum concentration, with values as high as 500 hours reported in a child following an overdose. After maintenance therapy, phenytoin half-life is approximately 10 to 20 hours in most children. 7 WebJul 1, 2008 · The mean elimination half-life was 40 hours. Conclusions: Healthy elderly adults appear to have the same phenytoin (PHT) pharmacokinetics as younger adults. Reduced PHT dosage requirements may be due to age-related changes in patients' sensitivity to the therapeutic and toxic effects of the drug. The prolonged elimination half … pneus alain

Phenytoin Dosing Calculator and analysis - GlobalRPH

WebNational Center for Biotechnology Information WebPhenytoin follows nonlinear (or zero-order) kinetics at therapeutic concentrations, because the rate of metabolism is close to the maximum capacity of the enzymes involved. In nonlinear kinetics, clearance and half-life fluctuate with plasma concentration. WebThe plasma half-life in man after oral administration of phenytoin averages 22 hours, with a range of 7 to 42 hours. Steady-state therapeutic levels are achieved at least 7 to 10 days … pneus alpin 5