title: Sustained release of amoxicillin from chitosan tablets.
abstract: Sustained release systems in the forms of chitosan (CTS) tablet and extrude for releasing amoxicillin were studied. The degradation of amoxicillin in pH 1.2 was determined. The effects of particle sizes of chitosan on the dissolution profiles were investigated. The result showed that chitosan with the particle size less than 75 microm yielded the best controlled release pattern and it was comparable to that was obtained from the hydroxypropylmethylcellulose (HPMC) tablets. Moreover, the tablets containing chitosan with particle size less than 75 microm were able to provide a significantly improved sustained release profile of amoxicillin compared to the release profile of a commercial capsule. All release profiles of amoxicillin from the chitosan tablets could be described by first-order kinetics.
authors.affiliation: Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.
authors.forename: Teerawat
authors.initials: T
authors.lastname: Sahasathian
authors.forename: Teerachai
authors.initials: T
authors.lastname: Kerdcholpetch
authors.forename: Akapol
authors.initials: A
authors.lastname: Chanweroch
authors.forename: Narong
authors.initials: N
authors.lastname: Praphairaksit
authors.forename: Narumon
authors.initials: N
authors.lastname: Suwonjandee
authors.forename: Nongnuj
authors.initials: N
authors.lastname: Muangsin
mesh_terms: D000658:Amoxicillin / Q000008:administration & dosage* / Q000737:chemistry; D048271:Chitosan / Q000008:administration & dosage*; D003692:Delayed-Action Preparations; D006863:Hydrogen-Ion Concentration; D012995:Solubility; D013607:Tablets
chemical_list: D003692:Delayed-Action Preparations; D013607:Tablets; D000658:Amoxicillin; D048271:Chitosan