Abstract:
:The pharmacokinetic profile of a newly developed Dilantin 300-mg Kapseal formulation was compared with that of currently marketed Dilantin 100-mg Kapseals in both a 300-mg single-dose bioequivalence study in nine healthy volunteers and a once-daily 300-mg multiple-dose study in 18 patients with seizures. Results of these studies indicate the rate and extent of absorption of the 300-mg extended phenytoin (PHT) sodium capsule formulation are similar to that of 100-mg extended PHT sodium capsules based on PHT plasma maximum concentrations and time to achieve them (Cmax, tmax), and area under the curve (AUC) values and the urinary excretion of total hydroxy phenylhydantoin (HPPH) in the single-dose study and steady-state PHT plasma Cmax, tmax, minimum plasma concentrations (Cmin), and AUC values and urinary excretion of total HPPH in the multiple-dose study. Control of seizures in patients was equally maintained on a once-daily 300-mg multiple-dosing regimen administered as either one 300-mg extended PHT sodium capsule daily or three 100-mg extended PHT sodium capsules daily. Therefore, 300-mg extended PHT sodium capsules can be safely and effectively interchanged with three 100-mg extended PHT sodium capsules in patients requiring a once-daily 300-mg PHT sodium dosing regimen.
journal_name
Epilepsiajournal_title
Epilepsiaauthors
Randinitis EJ,Buchanan RA,Kinkel AWdoi
10.1111/j.1528-1157.1990.tb05503.xsubject
Has Abstractpub_date
1990-07-01 00:00:00pages
458-64issue
4eissn
0013-9580issn
1528-1167journal_volume
31pub_type
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