Biowaiver monographs for immediate release solid oral dosage forms: cimetidine.
Literature data relevant to the decision to allow a waiver of in vivo bioequivalence (BE) testing for the approval of immediate release (IR) solid oral dosage forms containing cimetidine are reviewed. According to the current Biopharmaceutics Classification System (BCS), cimetidine would be assigned to Class III. Cimetidine's therapeutic use and therapeutic index, its pharmacokinetic properties, data related to the possibility of excipient interactions, and reported BE/bioavailability (BA) problems were also taken into consideration. On the basis of the overall evidence, a biowaiver can be recommended for cimetidine IR products, provided that the test product contains only those excipients reported in this paper in their usual amounts, and that the test and the comparator drug products both are "rapidly dissolving" as per BCS.
Department of Pharmacy, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand.
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Jantratid
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Prakongpan
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Dressman
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Amidon
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Junginger
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Midha
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Barends
D000284:Administration, Oral; D000818:Animals; D001682:Biological Availability; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002927:Cimetidine / Q000008:administration & dosage* / Q000493:pharmacokinetics; D004304:Dosage Forms; D004952:Esters; D005079:Excipients; D006635:Histamine H2 Antagonists / Q000008:administration & dosage* / Q000493:pharmacokinetics; D006801:Humans; D007536:Isomerism; D010539:Permeability; D051381:Rats; D012492:Salts; D012995:Solubility; D013810:Therapeutic Equivalency; D014018:Tissue Distribution
D004304:Dosage Forms; D004952:Esters; D005079:Excipients; D006635:Histamine H2 Antagonists; D012492:Salts; D002927:Cimetidine