Endo Pharmaceuticals Inc.

Penwest Pharmaceuticals Company

Troy McCall

Anand R Baichwal

Huai-Hung D Kao

David Lee

Steve Labudzinski

Lirong Liu

Haui-Hung Kao

The invention pertains to a method of relieving pain by administering a controlled release pharmaceutical tablet containing oxymorphine which produces a mean minimum blood plasma level 12 to 24 hours after dosing, as well as the tablet producing the sustained pain relief.

Oxymorphone controlled release formulations

Disclosed are sustained release oral solid dosage forms comprising a therapeutically effective amount of a medicament having a solubility of more than about 10 g/l; a pH modifying agent; and a sustained release matrix comprising a gelling agent, said gelling agent comprising a heteropolysaccharide gum and a homopolysaccharide gum capable of cross-linking said heteropolysaccharide gum when exposed to an environmental fluid, said dosage form providing a sustained release of said medicament after oral administration to human patients.

Sustained release matrix systems for highly soluble drugs

The invention pertains to a method of relieving pain by administering a controlled release pharmaceutical tablet containing oxymorphone which produces a mean minimum blood plasma level 12 to 24 hours after dosing, as well as the tablet producing the sustained pain relief.

Sustained release formulations of oxymorphone or pharmaceutically acceptable salts thereof; methods for making the sustained release formulations of oxymorphone or pharmaceutically acceptable salts thereof; and methods for using the sustained release formulations of oxymorphone or pharmaceutically acceptable salts thereof to treat patients suffering from pain are provided.

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Germantown, TN, United States of America

Troy McCall