Controlled release formulations of octreotide
View Patent ↗A formulation of octreotide or pharmaceutically acceptable salts thereof, which provides controlled release of a therapeutically effective amount of octreotide for a period of at least about two months. Methods of treating acromegaly, decreasing growth hormone, decreasing IGF-1, and treating conditions associated with carcinoid tumors and VIPomas by administering a controlled release formulation of octreotide are provided herein.
1. A method of treating a patient suffering from one or more symptoms associated with carcinoid tumors, said method comprising:
implanting subcutaneously into a patient in need thereof at least one implant comprising a hydrogel and a pharmaceutical formulation comprising octreotide;
wherein said pharmaceutical formulation is contained within said hydrogel, which hydrogel comprises a copolymer obtained from the copolymerization of a mixture comprising at least two hydrophilic, ethylenically unsaturated monomers;
wherein said pharmaceutical formulation contains between about 20 to about 150 milligrams of octreotide, in free form or salt form;
wherein said pharmaceutical formulation further comprises hydroxypropylcellulose; and
wherein said at least one implant releases a therapeutically effective amount of said octreotide to said patient over a period of at least about two months.
2. The method of claim 1 , wherein said effective amount of said octreotide provides an in vivo average C ss in said patient of about 0.1 ng/ml to about 9 ng/ml of octreotide.
3. The method of claim 1 , wherein said pharmaceutical formulation contains from about 40 to about 90 milligrams of octreotide.
4. The method of claim 1 , wherein said octreotide is octreotide acetate.
5. The method of claim 4 , wherein said pharmaceutical formulation contains about 50 milligrams of said octreotide acetate.
6. The method of claim 4 , wherein said pharmaceutical formulation contains about 80 milligrams of said octreotide acetate.
7. The method of claim 2 , wherein said effective amount of said octreotide provides an in vivo average C ss in said patient of about 1 ng/ml to about 2 ng/ml of octreotide.
8. The method of claim 1 , wherein said at least one implant releases a therapeutically effective amount of octreotide over a period of about two months to about two years.
9. The method of claim 1 , wherein said at least one implant releases a therapeutically effective amount of said octreotide over about six months.
10. The method of claim 1 , wherein said at least two hydrophilic, ethylenically unsaturated monomers are 2-hydroxyethyl methacrylate and hydroxypropyl methacrylate.
11. The method of claim 1 , wherein said copolymer comprises about 20% of 2-hydroxyethyl methacrylate and about 80% hydroxypropylmethacrylate.
12. The method of claim 1 , wherein the pharmaceutical formulation contains about 0.5 to 20% w/w of the hydroxypropylcellulose.
13. The method of claim 1 , wherein said pharmaceutical formulation further comprises magnesium stearate.
14. The method of claim 13 , wherein the pharmaceutical formulation contains about 0.5 to 5% w/w of the magnesium stearate.
15. The method of claim 1 , wherein said at least one implant releases said octreotide at a rate of about 10 ug to about 1000 ug per day over a period of about six months.
16. The method of claim 1 , wherein said at least one implant is two or more implants.
17. The method of claim 1 , wherein said at least one implant releases said octreotide at a rate of about 30 μg to about 250 μg per day in vitro.
18. The method of claim 1 , wherein the at least one implant is implanted in a dry state.
19. The method of claim 1 , wherein the at least one implant is implanted in a hydrated state.
20. The method of claim 1 , wherein said copolymer comprises about 40% of 2-hydroxyethyl methacrylate and about 60% hydroxypropylmethacrylate.