Drug coating providing high drug loading

• US 8,246,986 B2
• Filed: 09/23/2004
• Issued: 08/21/2012
• Est. Priority Date: 09/26/2003
• Status: Expired due to Fees

• Current Assignee: ALZA Corporation (Johnson & Johnson)
• Original Assignee: ALZA Corporation (Johnson & Johnson)
• Inventors: Cruz, Evangeline, Ruhlmann, Gregory, Pollock, Brenda, Li, Sherry, Garcia, Carmelita, Wong, Alfredo M., Bronz, Ryan, Fink, Tracy, Edgren, David
• Primary Examiner(s): Wax, Robert A
• Assistant Examiner(s): Palenik, Jeffrey T
• Application Number:
  US10/950,003
• Publication Number:
  US 20050112195A1
• Time in Patent Office: 2,889 Days
• Field of Search: 424/464, 424/468, 424/472, 514/282
• US Class Current: 424/464
• CPC Class Codes: A61K 2300/00 Mixtures or combinations of active ingredients, wherein at least one active ingredient is fully defined in groups A61K31/00 - A61K41/00
• CPC Class Codes: A61K 31/00 Medicinal preparations containing organic active ingredients
• CPC Class Codes: A61K 31/165 having aromatic rings, e.g. colchicine, atenolol, progabide
• CPC Class Codes: A61K 31/167 having the nitrogen of a carboxamide group directly attached to the aromatic ring, e.g. lidocaine, paracetamol
• CPC Class Codes: A61K 31/485 Morphinan derivatives, e.g. morphine, codeine
• CPC Class Codes: A61K 9/0004 Osmotic delivery systems; Sustained release driven by osmosis, thermal energy or gas
• CPC Class Codes: A61K 9/1676 having a drug-free core with discrete complete coating layer containing drug adsorbates of liquid drug formulations on inert powders without simultaneous granulation step A61K9/141; with further drug-free outer coating A61K9/5078; drug conjugated to non-active particles A61K47/6921
• CPC Class Codes: A61K 9/2086 Layered tablets, e.g. bilayer tablets; Tablets of the type inert core-active coat active cores with a complete drug-free outer coat A61K9/28
• CPC Class Codes: A61K 9/209 containing drug in at least two layers or in the core and in at least one outer layer
• CPC Class Codes: A61K 9/2886 having two or more different drug-free coatings; Tablets of the type inert core-drug layer-inactive layer of the type active core-drug layer-inactive layer A61K9/209
• CPC Class Codes: A61K 9/4808 characterised by the form of the capsule or the structure of the filling; Capsules containing small tablets; Capsules with outer layer for immediate drug release capsules filled with granules or microparticles A61K9/16; filled with microcapsules or coated microparticles A61K9/50; with mixture of different granules, microcapsules, (coated) microparticles A61K9/5084
• CPC Class Codes: A61K 9/5084 Mixtures of one or more drugs in different galenical forms, at least one of which being granules, microcapsules or (coated) microparticles according to A61K9/16 or A61K9/50, e.g. for obtaining a specific release pattern or for combining different drugs tablets containing such a mixture A61K9/2077
• CPC Class Codes: A61P 25/04 Centrally acting analgesics, e.g. opioids
• CPC Class Codes: A61P 29/00 Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]

Abstract

Aqueous drug coatings including at least one insoluble drug, wherein the insoluble drug accounts for about 85 wt % to about 97 wt % of the drug coatings are described. Such drug coatings may include only one insoluble drug, two or more insoluble drugs, or one or more insoluble drugs in combination with one or more soluble drugs.

Claims

1. A dosage form comprising:

an osmotic core comprising hydrocodone;

a coating comprising acetaminophen, a viscosity enhancer, a water soluble film former comprising copovidone and hydroxypropyl methylcellulose in a wt/wt ratio of between 0.6;

1 to 0.7;

1, and an excipient selected from the group consisting of a surfactant and a disintegrating agent; and

an intervening layer between the osmotic core and the coating;

wherein the acetaminophen is present in the coating in an amount ranging from about 60 wt % to about 97 wt % based on the total weight of the coating, the viscosity enhancer accounts for about 5 wt % or less based on said total weight, the excipient accounts for about 0.5 wt % to about 3 wt % based on said total weight, and the water soluble film former accounts for about 3 wt % to about 15 wt % based on said total weight.

2. The dosage form of claim 1, wherein acetaminophen is present in the coating in an amount ranging from about 85 wt % to about 97 wt %, based on the total weight of the coating.

3. The dosage form of claim 1, wherein the acetaminophen is present in the coating in an amount ranging from about 75 wt % to about 89.5 wt %, based on the total weight of the coating.

4. The dosage form of claim 1, wherein the wt/wt ratio of copovidone to hydroxypropyl methylcellulose is about 1:

1.5.