Dosage form for Parkinson's disease, spasticity and muscle spasms

• US 5,128,145 A
• Filed: 08/02/1991
• Issued: 07/07/1992
• Est. Priority Date: 06/13/1990
• Status: Expired due to Term

• Current Assignee: ALZA Corporation (Johnson & Johnson)
• Original Assignee: ALZA Corporation (Johnson & Johnson)
• Inventors: Edgren, David E., Bhatti, Gurdish K., Carpenter, Howard A.
• Primary Examiner(s): Page, Thurman K.
• Assistant Examiner(s): BROUILLETTE, D GABRIELLE
• Application Number:
  US07/739,367
• Time in Patent Office: 340 Days
• Field of Search: 424/473, 424/499, 424/498, 424/439, 604/892.1
• US Class Current: 424/473
• CPC Class Codes: A61K 9/0004 Osmotic delivery systems; Sustained release driven by osmosis, thermal energy or gas

Abstract

A dosage form is disclosed comprising a drug and a maltodextrin polymer for administering to a patient a drug in need of therapy.

Claims

1. A dosage form for delivering a drug to a drug receptor, wherein the dosage form comprises:

(a) a wall comprising at least in part a composition permeable to the passage of fluid, which wall surrounds;

(b) a compartment;

(c) at least one exit port in the wall that connects the exterior of the dosage form with the compartment;

(d) a dispensing composition in the compartment comprising a maltodextrin comprising a 500 to 1,000,000 molecular weight and a degree of polymerization of 3 to 6,140;

(e) 1 mg to 750 mg of drug in the dispensing composition for delivering the drug, by the combined operations of (a) and (b), through the exit port from the dosage form; and

,

(f) a push composition in the compartment comprising a hydrogel and an osmotically effective solute, which composition in the presence of fluid that enters the compartment increases in volume and thereby pushes the dispensing composition from the dosage form.

2. The dosage form for delivering the drug to a drug receptor according to claim 1, wherein the dosage form comprises a drug selected from the group consisting of a gastric acid secretion inhibitor, a histamine receptor antagonist, an antiparkinson, an appetite suppressant, a contraceptive, a dopamine receptor agonist, and a smoking cessation aid.

3. The dosage form for delivering the drug to a drug receptor according to claim 1, wherein the exit port comprises a member selected from the group consisting of a pore, a porous overlay, a porous insert, and a microporous member.

4. An improvement in an osmotic dosage form for delivering a drug to a patient, wherein the osmotic dosage form comprises:

(a) a wall comprising a composition permeable to the passage of fluid, which wall surrounds;

(b) a compartment;

(c) at least one passageway in the wall that connects the exterior of the osmotic dosage form with the compartment;

(d) a composition in the compartment that increases its volume in the presence of fluid that enters the compartment;

(e) a dose of a drug in the compartment;

(f) a dose of a drug in contact with the exterior of the osmotic dosage form; and

wherein the improvement comprises;

(g) a maltodextrin in the compartment comprising a 500 to 1,000,000 molecular weight and a degree of polymerization of 3 to 6,140, which maltodextrin is compatible with the drug and aids in delivering the drug through the passageway from the osmotic dosage form.