WO 2010/096820 Al
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(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date 26 August 2010 (26.08.2010) WO 2010/096820 Al (51) International Patent Classification: (74) Agents: DEO, Sandhya et al; Cooley LLP, 777 6th A61K 9/22 (2006.01) A61K 9/52 (2006.01) Street, NW, Suite 1100 , Washington, DC 20001 (US). (21) International Application Number: (81) Designated States (unless otherwise indicated, for every PCT/US20 10/025083 kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, (22) Date: International Filing CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, 23 February 2010 (23.02.2010) DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, (25) Filing Language: English HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, (26) Publication Language: English ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, (30) Priority Data: NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, 61/154,504 23 February 2009 (23.02.2009) US SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (71) Applicant (for all designated States except US): EU- RAND, INC. [US/US]; 845 Center Drive, Vandalia, Ohio (84) Designated States (unless otherwise indicated, for every 45377 (US). kind of regional protection available): ARIPO (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, (72) Inventors; and ZW), Eurasian (AM, AZ, BY, KG, KZ, MD, RU, TJ, (75) Inventors/Applicants (for US only): VENKATESH, TM), European (AT, BE, BG, CH, CY, CZ, DE, DK, EE, Gopi [US/US]; 780 Waldsmith Way, Vandalia, Ohio ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, 45377 (US). PARRINO, Vincent [US/US]; 1307 White MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, hall Drive, Doylestown, Pennsylvania 18901 (US). GAT- TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, TL Paolo [YT/YT]; Via Ludovico Ariosto 123, 1-20099 ML, MR, NE, SN, TD, TG). Sesto San Giovanni (MI) (IT). FABIANI, Flavio [IT/IT]; Published: Via S. Francesco d'Asssisi, 50, 1-20050 Ronco Briantino (MI) (IT). — with international search report (Art. 21(3)) (54) Title: CONTROLLED RELEASE COMPOSITIONS COMPRISING ANTI-CHOLINERGIC DRUGS (57) Abstract: The present invention provides compositions comprising dicy Schematic of CR beads clomine, or salts, and/or solvates and methods of making and using the com positions to treat intestinal hypermotility or Irritable Bowel Syndrome (IBS). The present invention also provides once-a- day orally disintegrating dosage forms comprising compositions of the present invention. Figure 1 CONTROLLED RELEASE COMPOSITIONS COMPRISING ANTI CHOLINERGIC DRUGS CROSS REFERENCE TO RELATED APPLICATIONS The present application claims priority to U.S. Provisional Application No. 61/154,504 filed February 23, 2009, which is incorporated herein by reference in its entirety for all purposes. FIELD OF THE INVENTION This invention relates to compositions comprising anti-cholinergic drugs such as dicyclomine, and methods of making and using such compositions. BACKGROUND OF THE INVENTION Anti-cholinergic drugs block the activity of acetylcholine on cholinergic receptors on the surface of smooth muscle cells, and as a class have utility for a variety of clinical applications, e.g., as smooth muscle relaxants, antispasmodics, anti-motion sickness agents, antihistamines, bronchodilators, etc. Anti-cholinergic drugs can be difficult to formulate into controlled release dosage forms which provide therapeutic levels of the drug over a 24 hour period using a once-a-day dosing schedule, while minimizing dose related side affects. The difficulty in designing extended release once-a-day dosage forms can be further complicated by the pharmacokinetic properties and physical properties of the drug itself. For example, bicyclohexyl-1-carboxylic acid, 2-diethylamino ethyl ester (dicyclomine, also known as dicycloverine) is an exemplary anti-cholinergic drug known to have smooth muscle relaxant properties. The currently marketed formulation of dicyclomine has a very rapid dissolution profile that results in a rapid rise in blood plasma concentrations of the drug shortly after administration (T013x of approximately 1.5-3 hours) and is eliminated quickly with a short half-life ( / ) of 1.8 hours. The combination of this rapid Tmax and short half life requires that conventional dicyclomine dosage forms be administered multiple times a day in order to maintain, tolerable, therapeutic serum levels over a 24 hour period. Anti-cholinergic drugs such as dicyclomine HCl are indicated for managing abdominal spasms and pain associated with moderate-to-severe irritable bowel syndrome. Dicyclomine, a muscarinic Ml acetylcholine receptor antagonist, acts as a smooth muscle relaxant and is used as an antispasmodic to alleviate abdominal pain and bloating caused by colonic spasms associated with irritable bowel syndrome (IBS). IBS may be attributed to autonomic neuropathy; decreased vagal tone will lead to constipation while an increase in sympathetic stimulus is associated with diarrhea. The majority of IBS cases are a result of the interrelation between psychological morbidity and visceral hypersensitivity. IBS patients have higher incidences of anxiety, depression and sleep disturbance. Typical anti-cholinergic side effects, such as dry mouth, dizziness, blurred vision and nausea, are problematic for moderate-to-severe IBS patients taking an immediate release therapeutic agent several times a day on an extended basis. Severe symptoms are frequent, intense, and chronically interfere with daily functioning. Moderate-to-severe symptoms also impact social well-being, as patients will tend to avoid long journeys or going out (Drossman, D. 2006 Gastroenterology 20 (5): 121-132 and Smith, D.G. 2005 Am J Manag Care 11: S43-S50). According to the Bentyl® (immediate release dicyclomine HCl capsules) package insert, 46 out of 100 patients in a clinical trial could not take the recommended 160 mg daily dose due to side effects. The prevalence rate of IBS in the U.S. is 15-20% of the general population. As such, conventional dosage forms of dicyclomine are far from clinically optimal, not only for patient compliance reasons, but also because a rapid serum level rise to Cmax is associated with common side effects such as dry mouth, dizziness, blurred vision, nausea, etc. Thus, there is a need for controlled release formulations of anti-cholinergic drugs which can provide clinically usefully effects with a single, once-a-day administration schedule. More particularly there is a need for dosage forms of anti-cholinergic drugs which maintain clinically effective and therapeutic serum levels of the drug over a 24 hour period to allow for once-a-day dosing, for example to treat intestinal hypermotility disorders. SUMMARY OF THE INVENTION In one embodiment, the present invention is directed to a controlled release composition comprising a plurality of anti-cholinergic drug-containing particles, the particles comprising: (a) a core comprising an anti-cholinergic drug; (b) a first coating disposed over the core comprising at least one water-insoluble polymer; and (c) a second coating disposed over the first coating comprising an enteric polymer optionally in combination with a water-insoluble polymer. In another embodiment, the present invention is directed to a dosage form comprising: (a) a core comprising an anti-cholinergic drug; (b) a first coating disposed over the core comprising at least one water-insoluble polymer; (c) a second coating disposed over the first coating comprising an enteric polymer optionally in combination with a water-insoluble polymer; and (d) a plurality of rapidly-dispersing microgranules each having an average particle size of not more than about 400 µm and comprising (i) a disintegrant and (ii) a sugar alcohol and/or a saccharide, wherein said sugar alcohol and/or saccharide each have an average particle size of not more than about 30 µm; wherein said dosage form is an orally disintegrating tablet. In yet another embodiment, the present invention is directed to a method of preparing a controlled release composition comprising: (a) preparing a plurality of cores comprising an anti-cholinergic drug; (b) coating said cores with a first coating comprising at least one water-insoluble polymer optionally in combination with an enteric polymer; (c) applying a second coating, disposed over said coated cores from step (b) wherein the second coating comprises an enteric polymer optionally in combination with a water-insoluble polymer; and (d) filling said cores comprising an anti-cholinergic drug of step (a) and said coated cores of step (c) in clinically effective quantities into capsules. In still yet another embodiment, the present invention is directed to a method of preparing a controlled release composition comprising: (a) preparing a plurality of cores comprising an anti-cholinergic drug; (b) coating said cores with a first coating comprising at least one water-insoluble polymer; (c) applying a second coating, disposed over said coated cores from step (b) wherein the second coating comprises an enteric polymer optionally in combination with a water-insoluble polymer; (d) preparing rapidly-dispersing microgranules each having an average particle size of not more than about 400 µm and comprising (i) a disintegrant and (ii) a sugar alcohol and/or a saccharide, wherein said sugar alcohol and/or saccharide each have an average particle size of not more than about 30 µm; and (e) compressing a blend comprising clinically effective amounts of said cores of step (a) and said coated said drug particles of step (c), together with said rapidly-dispersing microgranules of (d) into orally disintegrating tablets. In still another embodiment, the present invention is directed to a method of treating intestinal hypermotility or irritable bowel syndrome, comprising administering a therapeutic amount of the composition of the present invention to a patient in need thereof.