×

Gastric retention dosage form having multiple layers

  • US 6,797,283 B1
  • Filed: 12/22/1999
  • Issued: 09/28/2004
  • Est. Priority Date: 12/23/1998
  • Status: Expired due to Fees
First Claim
Patent Images

1. An active agent dosage form comprising:

  • a first layer comprising an amount of swellable polymer, said amount being sufficient to swell said first layer such that the active agent dosage form is retained within a stomach of a subject;

    a second layer laminated with the first layer at a common surface, said second layer comprising a therapeutic amount of an active agent and being formulated to swell to a lesser extent than the first layer; and

    at least one band of insoluble material circumscribing only a portion of said first layer and said second layer, said at least one band of insoluble material binding together the first layer and the second layer.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×