Enteric Soft Capsules

Abstract

A gel mass is provided that is useful in manufacturing enteric soft or hard capsules, or enteric tablets without coating.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]The present application is a continuation of U.S. patent application Ser. No. 10 / 529,984, filed Mar. 31, 2005, which is a national phase application under 35 U.S.C. §371 of International Application Serial No. PCT / US03 / 20579, filed on Jun. 27, 2003, which claims benefit of priority under 35 U.S.C. §119 to U.S. Provisional Patent Application Ser. No. 60 / 415,187, filed on Oct. 1, 2002, the contents of each which are hereby incorporated by reference in their entirety.FIELD OF THE INVENTION[0002]The present invention relates to enteric preparations. More particularly, the invention relates to enteric solid dosage forms made using a gel mass comprising a film-forming, water-soluble polymer, an acid-insoluble polymer, and, optionally, other ingredients such as plasticizers, colors, and flavors. The invention further provides a direct method for manufacturing enteric preparations without need for coating.BACKGROUND OF THE INVENTION[0003]The use ...

AI Technical Summary

Benefits of technology

This method enables the production of enteric solid and soft capsules that maintain their physical strength and transparency, avoiding the defects associated with traditional coating methods and achieving the desired enteric properties without cross-linking or coating, thus enhancing manufacturing efficiency and product quality.

Problems solved by technology

Enteric dosage forms made by coating suffer from various process-related problems and defects that affect their performance or appearance.

And more seriously, coat integrity failure may occur, such as in cases of cracking or flaking off of the coating.

All coatings present inherent problems, including possible uneven distribution of the coating ingredients, which can easily happen under the multivariate coating process.

However, the problems faced during coating of capsules are even more critical, due to the delicate and heat sensitive nature of the soft elastic capsule shell.

Both hard and soft capsules can easily undergo agglomeration and distortion due to the heat-sensitive shell composition.

Moreover, the smoothness and elasticity of the capsule surface make it difficult to form an intact adhering enteric coat without careful sub-coating step to improve the surface for coating.

A further disadvantage of enteric coating for soft capsules is the loss of the normally shiny and clear appearance of capsule gelatin shells.

In addition to the undesirable surface texture modifications usually caused by coating, most accepted aqueous enteric polymer preparations result in opaque capsules.

While different attempts have been tried to improve the manufacture of enteric soft gelatin capsules via coating, the inherent disadvantages in the coating process amplify the necessity for a better way of manufacturing enteric soft capsules, ideally, without coating.