Bioadhesive tablets for controlled transdermal delivery of drugs.
Transdermal bioadhesive tablets were formulated by the direct compression method and evaluated. Carboxyfluorescein (CF) was used as a model permeant. The compression parameters were kept consistent and the composition of the formulation was varied to alter the release rate of the drug from the formulations. The dosage form was evaluated for physicochemical, adherence, and in vitro diffusion parameters. The transdermal flux of the drug decreased with the increasing ratio of Ethyl cellulose (EC)/hydroxypropyl cellulose (HPC). The test formulations were subjected to pharmacokinetic studies in mice. The formulations were able to maintain a steady state plasma concentration up to 12 hours. They were found to be safe for transdermal use as interpreted from skin irritation studies carried out on rabbits.
Department of Pharmaceutical and Biomedical Sciences, Raabe College of Pharmacy, Ohio Northern University, Ada, OH 45810, USA. n-murthy@onu.edu
S Narasimha
SN
Murthy
B A
BA
Vishwanath
S
S
Bharath
D000279:Administration, Cutaneous; D000818:Animals; D002482:Cellulose / Q000031:analogs & derivatives / Q000737:chemistry; D002626:Chemistry, Pharmaceutical; D003692:Delayed-Action Preparations; D005452:Fluoresceins / Q000493:pharmacokinetics; D005456:Fluorescent Dyes; D051379:Mice; D008807:Mice, Inbred BALB C; D011817:Rabbits; D012869:Skin Absorption; D023422:Skin Irritancy Tests; D013607:Tablets / Q000008:administration & dosage* / Q000737:chemistry / Q000493:pharmacokinetics; D014014:Tissue Adhesives / Q000008:administration & dosage*
D003692:Delayed-Action Preparations; D005452:Fluoresceins; D005456:Fluorescent Dyes; D013607:Tablets; D014014:Tissue Adhesives; C024098:6-carboxyfluorescein; C013517:ethyl cellulose; D002482:Cellulose; C008079:hydroxypropylcellulose