Biguanide compositions and methods of treating metabolic disorders
Provided herein are methods for treating certain conditions, including diabetes, obesity, and other metabolic diseases, disorders or conditions by administrating a composition comprising a biguanide or related heterocyclic compound, e.g., metformin. Also provided herein are biguanide or related heterocyclic compound compositions, and methods for the preparation thereof for use in the methods of the present invention. Also provided herein are compositions comprising metformin and salts thereof and methods of use.
1. A method for treating diabetes in a patient in need thereof comprising administering to said patient a pharmaceutical dosage form comprising metformin or a salt thereof, wherein said pharmaceutical dosage form comprises an enteric coating and is adapted to have an onset of release of said metformin or a salt thereof at about pH 5.5 or above, and to provide at least 20% less relative bioavailability of metformin as measured by plasma area under curve (AUC) resulting from administration of said pharmaceutical dosage form, compared to an immediate release composition having the same amount of said metformin or a salt thereof.
2. The method according to claim 1 , wherein the circulating plasma concentration of metformin resulting from administration of said pharmaceutical dosage form is below about 0.5 μg/mL.
3. The method according to claim 1 , wherein the circulating plasma concentration of metformin resulting from administration of said pharmaceutical dosage form is below about 0.25 μg/mL.
4. The method according to claim 1 , wherein said pharmaceutical dosage form is adapted to provide at least 30% less relative bioavailability of metformin compared to an immediate release composition having the same amount of said metformin or a salt thereof.
5. The method according to claim 1 , wherein said pharmaceutical dosage form is adapted to provide at least 40% less relative bioavailability of metformin compared to an immediate release composition having the same amount of said metformin or a salt thereof.
6. The method according to claim 1 , wherein said pharmaceutical dosage form is adapted to provide at least 50% less relative bioavailability of metformin compared to an immediate release composition having the same amount of said metformin or a salt thereof.
7. The method according to claim 1 , wherein the daily dose of said metformin or a salt thereof is between about 50 mg and about 1000 mg.
8. The method according to claim 1 , wherein the daily dose of said metformin or a salt thereof is between about 100 mg and about 500 mg.
9. The method according to claim 1 , wherein the daily dose of said metformin or a salt thereof is about 500 mg.
10. The method according to claim 1 , wherein the daily dose of said metformin or a salt thereof is about 600 mg.
11. The method according to claim 1 , wherein the daily dose of said metformin or a salt thereof is about 1000 mg.
12. The method according to claim 1 , wherein said metformin or a salt thereof is metformin hydrochloride.
13. The method according to claim 1 , wherein said pharmaceutical dosage form further comprises a second antidiabetic agent selected from: thiazolidinediones, sulfonylureas, meglitinides, alpha-glucosidase inhibitors, a second DPP-IV inhibitor, incretin mimetics, and SGLT inhibitors.
14. The method according to claim 1 , wherein said pharmaceutical dosage form further comprises an SGLT inhibitor.
15. The method according to claim 1 , wherein said pharmaceutical dosage form further comprises a second DPP-IV inhibitor.
16. The method according to claim 1 , wherein said pharmaceutical dosage form further comprises an antiobesity agent.
17. The method according to claim 16 , wherein said antiobesity agent is lorcaserin.
18. The method according to claim 16 , wherein said antiobesity agent is phentermine.
19. The method according to claim 16 , wherein said antiobesity agent is a combination of lorcaserin and phentermine.
20. The method according to claim 16 , wherein said antiobesity agent is a combination of topiramate and phentermine.
21. The method according to claim 16 , wherein said antiobesity agent is a combination of bupropion and naltrexone.
22. The method according to claim 1 , wherein said pharmaceutical dosage form has an onset of release of said metformin or a salt thereof at about pH 6.0.
23. The method according to claim 1 , wherein said pharmaceutical dosage form has an onset of release of said metformin or a salt thereof at about pH 6.5.
24. The method according to claim 1 , wherein said pharmaceutical dosage form has an onset of release of said metformin or a salt thereof at about pH 7.0.