Details for Patent: 4,863,743

Summary for Patent: 4,863,743

Title:	Controlled release potassium chloride
Abstract:	A controlled release potassium chloride tablet is disclosed which is comprised of potassium chloride crystals having a mesh size of about 30 to about 50 mesh which are coated with a coating material comprised of ethylcellulose and hydroxypropylcellulose. The coated crystals form micro pellets which then can be compressed into tablets. The tablets disintegrate rapidly in an aqueous environment thus assuring a more uniform dissolution of the active component as compared with other types of controlled release potassium chloride dosage formulations. The distribution of the potassium chloride micro pellets over a wide surface area in the gastrointestinal mucosa aids in reducing the risk of gastrointestinal lesions. The formation of the coated micro pellets which disperse quickly upon contact with aqueous environment allow for the repeated chronic oral administration of a relatively large dose of potassium chloride (20 mEq).
Inventor(s):	Hsiao; Charles (Cooper City, FL), Chou; Chi T. (Monsey, NY)
Assignee:	Key Pharmaceuticals, Inc. (Kenilworth, NJ)
Application Number:	06/830,981
Patent Claim Types: see list of patent claims	Dosage form; Use;

Drugs Protected by US Patent 4,863,743

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Patented / Exclusive Use	Submissiondate

International Family Members for US Patent 4,863,743

Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Austria	52918
Australia	5514086
Australia	583903