US Patent Number
The present invention relates to a hard capsule made from a material such as gelatin, starch or a hydrophilic polymer. The capsule of the present invention is formulated into a delivery system which incorporates pharmacologically active components in three or more distinct compartments. When three compartments are utilized in the capsule, the outer compartment incorporates a drug and excipients into a layer which coats the outer part of the capsule. This layer represents the rapid release portion of the delivery system. The intermediate compartment comprises a powder formulation comprised of a drug and excipients which represents the intermediary speed release portion of the delivery system. The innermost compartment incorporates the active ingredient or ingredients in a multiparticulate form, such as small pellets, and represents the slow release component of the delivery system.
University of Kentucky Research Foundation, Lexington, Ky.
Digenis, George and Noskova, Dagmar, "Multicompartment Hard Capsule with Control Release Properties" (1997). Pharmaceutical Sciences Faculty Patents. 89.