{"title":"The pharmacokinetics of a new sustained-release form of diclofenac sodium in humans.","authors":"H Mascher","doi":"","DOIUrl":null,"url":null,"abstract":"<p><p>In the present study, two sustained release diclofenac preparations were administered every 12 hours over 4 days to ten human volunteers. Diurnal profiles were recorded on the 1st and 4th days, from which pharmacokinetic parameters were calculated: particular attention was given to cumulation. One, a newly developed sustained release formulation, had a MRT of 5.5 hours, and showed surprisingly small variation coefficients [AUC ss (72-84 hrs) +/- 26%; Cmax ss (72-84 hrs) +/- 19%] after 7 administered doses; accordingly, the maximum concentrations were within a very narrow time window [tmax ss (72-84 hrs) range: 1.5-2.5 hours after administration]. Due to the selected release profiles with this formulation, there was no danger of cumulation in spite of administration every 12 hours [AUC 0-12 hrs, mean value = 1555 ng/ml x h; AUC ss 72-84 hrs, mean value = 1750 ng/ml x h].</p>","PeriodicalId":11271,"journal":{"name":"Drug design and delivery","volume":"4 4","pages":"303-11"},"PeriodicalIF":0.0000,"publicationDate":"1989-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Drug design and delivery","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
In the present study, two sustained release diclofenac preparations were administered every 12 hours over 4 days to ten human volunteers. Diurnal profiles were recorded on the 1st and 4th days, from which pharmacokinetic parameters were calculated: particular attention was given to cumulation. One, a newly developed sustained release formulation, had a MRT of 5.5 hours, and showed surprisingly small variation coefficients [AUC ss (72-84 hrs) +/- 26%; Cmax ss (72-84 hrs) +/- 19%] after 7 administered doses; accordingly, the maximum concentrations were within a very narrow time window [tmax ss (72-84 hrs) range: 1.5-2.5 hours after administration]. Due to the selected release profiles with this formulation, there was no danger of cumulation in spite of administration every 12 hours [AUC 0-12 hrs, mean value = 1555 ng/ml x h; AUC ss 72-84 hrs, mean value = 1750 ng/ml x h].