title: The use of liquid self-microemulsifying drug delivery systems based on peanut oil/tween 80 in the delivery of griseofulvin.
abstract: Peanut oil and Tween 80 blends devoid of any cosurfactant were employed in the formulation of different batches of liquid self-microemulsifying drug delivery systems (LSMEDDS) and their suitability as vehicles for the delivery of a typical lipophilic drug-griseofulvin-was investigated. The LSMEDDS were evaluated using the following parameters: phase separation, globule size, viscosity, solubility of griseofulvin, and partition coefficient. The release profile of griseofulvin from the optimized LSMEDDS was evaluated in citrate/phosphate buffer solutions of pH 2.0, pH 6.5, and pH 7.4. The results obtained indicated that there was significantly higher (alpha </= 0.05) percentage cumulative amounts of griseofulvin released from the LSMEDDS in comparison with that released from peanut oil alone. The release of griseofulvin from the LSMEDDS into aqueous media of pH 6.5 and pH 7.4 showed enhanced and controlled dissolution of the drug from the formulation. Incorporation of griseofulvin into this proposed formulation is suggested as a strategy to overcome the irregular dissolution and absorption behaviors often associated with conventional griseofulvin tablets.
authors.affiliation: Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka, Enugu State, Nigeria. Kcofokansi@yahoo.com
authors.forename: K C
authors.initials: KC
authors.lastname: Ofokansi
authors.forename: K I
authors.initials: KI
authors.lastname: Chukwu
authors.forename: S I
authors.initials: SI
authors.lastname: Ugwuanyi
mesh_terms: D000935:Antifungal Agents / Q000008:administration & dosage* / Q000737:chemistry / Q000493:pharmacokinetics*; D001682:Biological Availability; D004339:Drug Compounding / Q000379:methods; D016503:Drug Delivery Systems / Q000379:methods*; D015195:Drug Design; D045703:Emulsifying Agents / Q000737:chemistry*; D004655:Emulsions; D006118:Griseofulvin / Q000008:administration & dosage* / Q000737:chemistry / Q000493:pharmacokinetics*; D000074241:Peanut Oil; D010539:Permeability; D044367:Phase Transition; D010938:Plant Oils / Q000737:chemistry; D011136:Polysorbates / Q000737:chemistry; D012995:Solubility
chemical_list: D000935:Antifungal Agents; D045703:Emulsifying Agents; D004655:Emulsions; D000074241:Peanut Oil; D010938:Plant Oils; D011136:Polysorbates; D006118:Griseofulvin