Layered drug delivery device

1. A layered drug delivery device having an outer side and an inner side, the device comprising in order from the outer side to the inner side:

a first layer wherein the first layer is homogenous, water insoluble, water swellable, and water permeable when swelled, and

a second layer comprising a therapeutic amount of a water soluble drug and a water soluble mucoadhesive film, said second layer disposed such that water passing through said first layer hydrates the second layer and solubilizes the drug, wherein said solubilized drug can permeate through a mucosal membrane when the inner side is in contact with the mucosal membrane,

wherein the drug delivery device is in sheet form, and

wherein the first layer and the second layer are in direct contact.

2. The layered drug delivery device of claim 1 , wherein the water soluble drug comprises a proton pump inhibitor selected from the group consisting of: lansoprazole, omeprazole, esomeprazole, rabeprazole, pantoprazole, pariprazole, tentaprazole, and leminoprazole.

3. The layered drug delivery device of claim 2 , wherein the water soluble drug comprises lansoprazole.

4. The layered drug delivery device of claim 3 , further comprising a pH modifier in an amount sufficient to maintain a basic environment on the inner side of the device.

5. The layered drug delivery device of claim 1 , wherein the second layer is a solid solution comprising the water soluble mucoadhesive film and the water soluble drug.

6. The layered drug delivery device of claim 5 , wherein water passing through the first layer hydrates the second layer to solubilize the mucoadhesive film and the drug.

7. The layered drug delivery device of claim 1 , further comprising a permeation enhancer disposed toward the inner side from the first layer.

8. The layered drug delivery device of claim 7 , wherein the second layer is a solid solution comprising the permeation enhancer.

9. The layered drug delivery device of claim 7 , wherein the permeation enhancer is contained in a separate layer disposed on the inner side from the first and second layers.

10. The layered drug delivery device of claim 1 , wherein said first layer further comprises a pore former, wherein when the device is exposed to water the pore former dissolves to create a porous matrix in the first layer for water to travel through the first layer to hydrate the second layer.

11. The layered drug delivery device of claim 1 , wherein the delivery device is 0.05 mm to 2.00 mm thick.

12. The layered drug delivery device of claim 11 , wherein the delivery device is 0.1 mm to 1.00 mm thick.

13. The layered drug delivery device of claim 1 , wherein the first layer makes up 10 wt % to 90 wt % of the drug delivery device and the second layer makes up 90 and 10 wt % of the drug delivery device.

14. The layered drug delivery device of claim 1 ,

wherein the first layer is a film comprising:

25 to 85 wt % of a film forming polymer composition, wherein the formed film is water insoluble, water swellable, and water permeable when swelled,

1 to 75 wt % of a water soluble film forming agent,

5 to 50 wt % of a pore forming agent, and

1 to 20 wt % of a plasticizer selected from the group consisting of: glycerin, propylene glycol, triethyl citrate, and polyethylene glycol (PEG),

wherein the second layer is a film of a solid solution comprising:

1 to 50 wt % of a proton pump inhibitor selected from the group consisting of: lansoprazole, omeprazole, esomeprazole, rabeprazole, patoprazole, pariprazole, tentaprazole, and leminoprazole,

1 to 75 wt % of a water soluble film forming agent,

1 to 50 wt % of a water soluble mucoadhesive agent,

1 to 50 wt % of a permeation enhancer,

0.1 to 10 wt % of pH modifier, and

1 to 20 wt % of a plasticizer selected from the group consisting of: glycerin, propylene glycol, triethyl citrate, and polyethylene glycol (PEG),

said second film layer disposed such that water passing through said first film layer hydrates the second layer and solubilizes the proton pump inhibitor, wherein said solubilized lansoprazole can permeate through a mucosal membrane when the inner side is in contact with the mucosal membrane,

wherein the drug delivery device is in sheet form.

15. The layered drug delivery device of claim 14 ,

wherein the water insoluble, water swellable, and water permeable film forming polymer composition comprises a polyvinyl acetate polymer stabilized with povidone and sodium lauryl sulfate,

wherein the pore forming agent is a water soluble carbohydrate or water soluble hydrogenated carbohydrate,

wherein the permeation enhancer is selected from the group consisting of:

menthol, dimethyl sulfoxide (DMSO), sodium glycocholate, monoglycerides, azone, and cyclodextrins,

wherein the mucoadhesive compound is selected from the group consisting of:

a carboxy vinyl polymer that is cross-linked using an allyl ether of pentaerythritol as the cross linker, and

wherein the pH modifier is a base.

16. The layered drug delivery device of claim 14 , wherein the water soluble film forming agent of the first sheet and the water soluble film forming agent of the second sheet, each comprise: a water soluble polyethylene oxide polymer; a water soluble hypromellose polymer; or both a water soluble polyethylene oxide polymer and a water soluble hypromellose polymer,

wherein the polyethylene oxide polymer has a molecular weight of 70,000 to 300,000 daltons, and wherein when the water soluble hypromellose polymer is dispersed in water to form a 2 wt % solution, the solution has a viscosity measured at 20° C. of 1 centipoise to 100 centipoise.

17. The layered drug delivery device of claim 16 , wherein the water soluble film forming agent of the first sheet comprises a water soluble polyethylene oxide polymer having a molecular weight about 200,000 daltons and a water soluble hypromellose polymer, wherein when the water soluble hypromellose polymer is dispersed in water to form a 2 wt % solution, the solution has a viscosity measured at 20° C. of 50 centipoise to 100 centipoise, and

wherein the water soluble film forming agent of the second sheet comprises a water soluble polyethylene oxide polymer having a molecular weight about 200,000 daltons and a water soluble cellulose ether polymer, wherein when the water soluble hypromellose polymer is dispersed in water to form a 2 wt % solution, the solution has a viscosity measured at 20° C. of 1 centipoise to 10 centipoise.

18. A layered film drug deliver device having an outer side and an inner side, the device comprising films in order from the outer side to the inner side:

(i) a first film layer wherein the first layer is homogenous, water insoluble, water swellable, and water permeable, wherein the first layer comprises:

54 to 63 wt % of a water insoluble, water swellable, and water permeable film forming polymer composition comprising a polyvinyl acetate polymer stabilized with povidone and sodium lauryl sulfate,

6 to 19 wt % of a water soluble film forming agent comprising a water soluble polyethylene oxide polymer and a water soluble hypromellose polymer, wherein the polyethylene oxide polymer has a molecular weight of 70,000 to 300,000 daltons, and wherein when the water soluble hypromellose polymer is dispersed in water to form a 2 wt % solution, the solution has a viscosity measured at 20° C. of 1 centipoise to 100 centipoise,

10 to 15 wt % of a pore forming agent selected from the group consisting of water soluble carbohydrate, water soluble hydrogenated carbohydrate, or a combination thereof, and

8 to 12 wt % of a plasticizer selected from the group consisting of glycerin, propylene glycol, and polyethylene glycol (PEG),

(ii) a second film layer comprising:

14 to 20 wt % lansoprazole,

35 to 50 wt % of a water soluble film forming agent comprising a water soluble polyethylene oxide polymer and a water soluble hypromellose polymer, wherein the polyethylene oxide polymer has a molecular weight of 70,000 to 300,000 daltons, and wherein when the water soluble hypromellose polymer is dispersed in water to form a 2 wt % solution, the solution has a viscosity measured at 20° C. of 1 centipoise to 100 centipoise,

1 to 5 wt % of a water soluble mucoadhesive,

15 to 30 wt % of a permeation enhancer,

2.5 to 5 wt % NaOH, and

5 to 7 wt % of a polyethylene glycol having a molecular weight of 100 to 1000 dalton,

said second film layer being present as a solid solution and disposed such that water passing through said first film layer hydrates the second layer and solubilizes the lansoprazole, wherein said solubilized lansoprazole can permeate through a mucosal membrane when the inner side is in contact with the mucosal membrane,

wherein the drug delivery device is in sheet form, and

wherein the first layer and the second layer are in direct contact.

19. The layered drug delivery device of claim 1 , wherein the first layer and the second layer are laminated together.

20. The layered drug delivery device of claim 18 , wherein the first layer and the second layer are laminated together.

21. The layered drug delivery device of claim 1 , further comprising a pH modifier in an amount sufficient to maintain a basic environment on the inner side of the device.