Details for Patent: 6,982,281

Title:	Pharmaceutical compositions and dosage forms for administration of hydrophobic drugs
Abstract:	Pharmaceutical compositions and dosage forms for administration of hydrophobic drugs, particularly fenofibrate, are provided. The compositions comprise a therapeutically effective amount of an active agent and a solubilizer. The solubilizer is selected to effectively solubilize active agent in the composition. The solubilizers employed as part of the invention include: a vitamin E substance; monohydric alcohol esters such as trialkyl citrates, lactones and lower alcohol fatty acid esters; nitrogen-containing solvents; phospholipids; glycerol acetates such as acetin, diacetin and triacetin; glycerol fatty acid esters such as mono-, di- and triglycerides and acetylated mono- and diglycerides; propylene glycol esters; ethylene glycol esters; and combinations thereof. The pharmaceutical dosage forms contain the compositions in a suitable dosage form unit such as a capsule. Methods of treating patients comprising administering the compositions are also provided.
Inventor(s):	Chen; Feng-Jing (Salt Lake City, UT), Patel; Mahesh V. (Salt Lake City, UT)
Assignee:	Lipocine Inc (Salt Lake City, UT)
Filing Date:	Nov 17, 2000
Application Number:	09/716,029
Claims:	1. A pharmaceutical composition for oral administration of fenofibrate, comprising: a) a therapeutically effective amount of fenofibrate; and b) an effective solubilizing amount of a solubilizer selected from the group consisting of: a trialkyl citrate; a lactone; a combination of a trialkyl citrate and a lactone; a combination of a vitamin E substance and at least one of a trialkyl citrate and a lactone, and a combination of a nitrogen-containing solvent and at least one of a trialkyl citrate and a lactone. 2. The pharmaceutical composition of claim 1, wherein said solubilizer is a trialkyl citrate. 3. The pharmaceutical composition of claim 2, wherein said trialkyl citrate is selected from the group consisting of triethyl citrate, acetyltriethyl citrate, tributyl citrate, acetyltributyl citrate and mixtures thereof. 4. The pharmaceutical composition of claim 3, wherein said trialkyl citrate is triethyl citrate. 5. The pharmaceutical composition of claim 1, wherein said solubilizer is a lactone. 6. The pharmaceutical composition of claim 5, wherein said lactone is selected from the group consisting of .epsilon.-caprolactone and isomers thereof, .delta.-valerolactone and isomers thereof and .beta.-butyrolactone and isomers thereof and mixtures thereof. 7. The pharmaceutical composition of claim 1, wherein said solubilizer comprises a mixture of a nitrogen-containing solvent and at least one of a trialkyl citrate and a lactone. 8. The pharmaceutical composition of claim 7, wherein said nitrogen-containing solvent is selected from the group consisting of dimethylformamide, dimethylacetamide, N-alkylpyrrolidone, N-hydroxyalkylpyrrolidone, N-alkylpiperidone, N-alkylcaprolactam and mixtures thereof. 9. The pharmaceutical composition of claim 7, wherein said nitrogen-containing solvent is selected from the group consisting of N-methyl 2-pyrrolidone, N-ethyl 2-pyrrolidone and mixtures thereof. 10. A method for treating a patient suffering from a lipid disorder, comprising administering to the patient a therapeutically effective amount of the composition of claim 1. 11. The pharmaceutical composition of claim 1, wherein the fenofibrate is at least 50% solubilized in the composition. 12. The pharmaceutical composition of claim 11, wherein the fenofibrate is at least 75% solubilized in the composition. 13. The pharmaceutical composition of claim 12, wherein the fenofibrate is completely solubilized in the composition. 14. The pharmaceutical composition of claim 1, in a liquid form. 15. The pharmaceutical composition of claim 1, in a semi-solid form. 16. A pharmaceutical dosage form comprising the pharmaceutical composition of claim 7. 17. The pharmaceutical dosage form of claim 16, comprising a unit dosage form. 18. The pharmaceutical dosage form of claim 17, comprising about 40 mg to about 250 mg fenofibrate. 19. The pharmaceutical dosage form of claim 18, comprising about 67 mg to about 200 mg fenofibrate. 20. The pharmaceutical dosage form of claim 16, in capsule form. 21. The pharmaceutical dosage form of claim 16, in the form of a drink. 22. The pharmaceutical composition of claim 1, wherein the fenofibrate has not been micronized. 23. The pharmaceutical composition of claim 1, wherein the fenofibrate has been micronized in the absence of a solid surfactant. 24. The pharmaceutical composition of claim 1, wherein the solubilizer comprises a combination of a vitamin E substance and at least one of a trialkyl citrate, and a lactone. 25. The pharmaceutical composition of claim 24, wherein the vitamin E substance is selected from the group consisting of tocopherols, tocopherol derivatives with organic acids, tocotrienols, individual enantiomers thereof, and mixtures of any of the foregoing. 26. The pharmaceutical composition of claim 25, wherein the vitamin E substance is selected from the group consisting of alpha-tocopherol, alpha-tocopheryl acetate, alpha-tocopheryl acid succinate, alpha-tocopheryl polyethylene glycol 1000 succinate, individual enantiomers thereof; and mixtures of any of the foregoing. 27. The method of claim 10, wherein the lipid disorder is an above-normal level of cholesterol. 28. The method of claim 10, wherein the lipid disorder is an above-normal triglyceride level. 29. The method of claim 10, wherein the lipid disorder is a below-normal level of high density lipoproteins. 30. The pharmaceutical composition of claim 26, wherein said vitamin E substance is alpha-tocopheryl polyethylene glycol 1000 succinate or an individual enantiomer thereof. 31. The pharmaceutical composition of claim 26, wherein said vitamin E substance comprises a mixture of alpha-tocopheryl polyethylene glycol 1000 succinate and alpha-tocopherol. 32. The pharmaceutical composition of claim 26, selected from the group consisting of d-alpha-tocopherol, d,1-alpha-tocopherol, d-alpha-tocopheryl acetate, and d,1-alpha-tocopheryl acetate. 33. The pharmaceutical composition or claim 26, wherein said vitamin E substance is alpha-tocopherol or an individual enantiomer thereof.