(12) United States Patent (10) Patent No.: US 8.263,125 B2 Vaya Et Al
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US008263125B2 (12) United States Patent (10) Patent No.: US 8.263,125 B2 Vaya et al. (45) Date of Patent: *Sep. 11, 2012 (54) DOSAGE FORM FOR HIGH DOSE-HIGH (52) U.S. Cl. ......... 424/469: 424/464; 424/465; 424/468 SOLUBLITY ACTIVE INGREDIENTS THAT (58) Field of Classification Search ........................ None PROVIDES FOR MIMEDIATE RELEASE AND See application file for complete search history. MODIFIED RELEASE OF THE ACTIVE INGREDIENTS (56) References Cited (75) Inventors: Navin Vaya, Gujarat (IN); Rajesh Singh Karan, Gujarat (IN); Sunil Sadanand U.S. PATENT DOCUMENTS Nadkarni, Gujarat (IN); Vinod Kumar 3,048,526 A * 8, 1962 Boswell ........................ 424,472 3,336,200 A 8, 1967 Krause et al. Gupta, Gujarat (IN) 4,139,589 A * 2/1979 Beringer et al. ... ... 264/250 4,503,031 A * 3/1985 Glassman ...... ... 424/467 (73) Assignee: Torrent Pharmaceuticals Limited, 4,996,061 A * 2/1991 Webb et al. ... ... 424/475 Ahmedabad (IN) 5,445,829 A * 8/1995 Paradissis et al. ... 424/480 5,738,874. A * 4/1998 Conte et al. ........ ... 424/472 (*) Notice: Subject to any disclaimer, the term of this 5,840,332 A * 1 1/1998 Lerner et al. .................. 424/464 5,985,843. A 1 1/1999 Higo et al. patent is extended or adjusted under 35 6,001,391 A 12/1999 Zeidler et al. U.S.C. 154(b) by 0 days. 6,238,699 B1 5, 2001 Rubin 6,372.254 B1 * 4/2002 Ting et al. ...... ... 424/473 This patent is Subject to a terminal dis 6,660,300 B1* 12/2003 Timmins et al. ... 424/469 claimer. 2004/0156902 A1* 8, 2004 Lee et al. ...................... 424/473 (21) Appl. No.: 11/134,633 FOREIGN PATENT DOCUMENTS WO WO/O 1/72286 10, 2001 (22) Filed: May 19, 2005 * cited by examiner (65) Prior Publication Data Primary Examiner — Anand Desai US 2006/OO24365A1 Feb. 2, 2006 Assistant Examiner — Melissa Mercier Related U.S. Application Data (74) Attorney, Agent, or Firm — Hedman & Costigan, P.C.: James V. Costigan (63) Continuation-in-part of application No. 10/630,446, filed on Jul. 29, 2003, now Pat. No. 7,985,422. (57) ABSTRACT (30) Foreign Application Priority Data A dosage form comprising of a high dose, high solubility active ingredient as modified release and a low dose active Aug. 5, 2002 (IN) ........................... 697 FMUMA2002 ingredient as immediate release where the weight ratio of Aug. 5, 2002 (IN) ........................... 699/MUMA2002 immediate release active ingredient and modified release Jan. 22, 2003 (IN) ............................. 8OfMUMA2003 active ingredient is from 1:10 to 1:15000 and the weight of Jan. 22, 2003 (IN) ............................. 82/MUMA2003 modified release active ingredient per unit is from 500 mg to 1500 mg; a process for preparing the dosage form. (51) Int. Cl. A6 IK 9/26 (2006.01) A6 IK9/20 (2006.01) 30 Claims, 10 Drawing Sheets -- U.S. Patent Sep. 11, 2012 Sheet 1 of 10 US 8,263,125 B2 FIGURE - - FIGURE 2 FIGURE 3 U.S. Patent Sep. 11, 2012 Sheet 2 of 10 US 8,263,125 B2 FIGURE 4 (a) 7 FIGURE 4 (b) U.S. Patent Sep. 11, 2012 Sheet 3 of 10 US 8,263,125 B2 FIGURE 5 20 OO 80 60 40 20 C. 2 g 6. 8 O 2 4 e. 8 20 22 24 26 Tite ho: U.S. Patent Sep. 11, 2012 Sheet 4 of 10 US 8,263,125 B2 FIGURE 6 2 O - O O 8 O 264 OOO O 2 4 6 8 O 2 1 4 16 8 2C 2 2 24 26 Time (hour) U.S. Patent Sep. 11, 2012 Sheet 5 of 10 US 8,263,125 B2 FIGURE 7 60 4 O 2 O O ----- -- --- O 2 4 6 8 O 12 4 6. 18 2O 22 24 26 Time (hour) U.S. Patent Sep. 11, 2012 Sheet 6 of 10 US 8,263,125 B2 FIGURE 8 O 4 8 12 6 2O 24 Tirne Hours) U.S. Patent Sep. 11, 2012 Sheet 7 of 10 US 8,263,125 B2 FIGURE 9 35OO 3OOO 25 OO 2OOO 5 OO 4 8 l2 6. 2O 24 Time Hours) U.S. Patent Sep. 11, 2012 Sheet 8 of 10 US 8,263,125 B2 FIGURE 10 O 2 4 6. 8 O 12 4 6. 18 2C 22 24 Time Hours) U.S. Patent Sep. 11, 2012 Sheet 9 of 10 US 8,263,125 B2 FIGURE 11 27 OO 2 4 O O 21 OO 1800 15OO 12OO 9 OO 6OO 3OO O 2 4 6 8 10 2 14 16 18 20 22 24 Time Hours) U.S. Patent Sep. 11, 2012 Sheet 10 of 10 US 8,263,125 B2 FIGURE 12 2OO 18O 16O 14 O 120 100 60 AO O 4 8 12 16 2O 24 Time Hours) US 8,263,125 B2 1. 2 DOSAGE FORM FOR HIGH DOSE-HIGH Block Jurgen et. al. describes in PCT application No. WO SOLUBILITY ACTIVE INGREDIENTS THAT 01/72286 A1 a formulation of vitamin composition whereas a PROVIDES FOR IMMEDIATE RELEASE AND beadlet comprises a slow release core coated by a controlled MODIFIED RELEASE OF THE ACTIVE release coating. The Sustained release core is coated with an INGREDIENTS immediate release layer. Richard Ting and Charles Hscao describes in U.S. Pat. No. This application is a continuation-in-part of Ser. No. 6,372.254B1 a press coated, pulsatile active ingredient deliv ery system which comprises a core of immediate release, 10/630,446, filed Jul. 29, 2003 now U.S. Pat. No. 7,985,422. enveloped by an extended release compartment. FIELD OF INVENTION 10 The need to use active ingredients with different and complementary mechanisms of action frequently arises in This invention relates to a dosage form comprising of a treatment of diabetes. There are several reasons to do this, high dose, high solubility active ingredient as modified namely, the disease itself is progressive, with deterioration of release and a low dose active ingredient as immediate release glycemic control over time; mono-therapeutic attempts to 15 achieve and maintain glycemic control often fail in the long where the weight ratio of immediate release active ingredient run; multiple defects in the disease and consequently primary and modified release active ingredient is from 1:1 to 1:15000 drug failures (1.2.3). and the weight of modified release high dose high solubility Current guidelines for combination therapy advise the use active ingredient per unit is from 500 mg to 1500 mg and the of agents with differing and complementary mechanisms of weight of immediate release active ingredient is up to 500mg: action in order to maximize therapeutic activity and reduce a process for preparing the formulation. Low dose active toxicity. Earlier introduction of combination therapy is ingredient in present invention can optionally be also in a increasingly being recommended. The commonly combined form of modified release. active ingredients include biguanides (metformin)+Sulpho nylureas, biguanides--PPAR2 agonists(thiazolidinediones), BACKGROUND OF THE INVENTION 25 Sulphonylureas--thiazolidinediones, non-Sulfonylurea secre tagogues (repaglinide)+biguanides etc. Fixed dose combina Combining two active ingredients in one pharmaceutical tions of many of the above mentioned co-administer active unit to improve patient compliance is known in literature. It ingredients have also been approved by the FDA. Most of can be either in the form of two or more active ingredients in these combinations are conventional formulations combined immediate release form or a combination of immediate 30 together into a single tablet. However, because of the dispar release and modified release form. There are various tech ity in the duration of action (half-life), these combinations are niques by which the combination of immediate release and given twice or thrice a day. modified release is formulated in single dosage form. To reduce this disparity in the duration of action, a novel Several examples of formulations having combination of strategy would be to combine a Sustained release formulation immediate release active ingredient and modified release 35 of one active ingredient (shorter duration of action) with active ingredient are described below. conventional formulation (long duration of action) of another Shoichi Higo and Kazuo Igusa describes in U.S. Pat. No. active ingredient. This would make it possible to give the 5.985,843 various types of pharmaceutical formulations, active ingredients in same dosing frequency. which consists of a delayed release of sucralfate and an imme This type of combination will give better compliance and a diate release fraction of another active ingredient. The phar 40 relative freedom from mealtime drug administration, thus, maceutical dosage forms are a tablet formulation containing improving the quality of life. More importantly, because of immediate release and delayed release granules; a two or prolonged duration of action, it shall produce a strictercontrol three layer tablet; a tablet with delayed release core sur of blood glucose and consequently less diabetic complica rounded by immediate release shell; a delayed release tablet/ tions. granule coated with a film of immediate release active ingre 45 The techniques described above do not work well when the dient. difference in the dose of active ingredients are high for Similarly Jurgen Zeidler et. al describes in U.S. Pat. No. example where the weight ratio of active ingredients is from 6,001.391 a process for producing solid combination tablets, 1:1 to 1: 15000 and the dose of modified release active ingre which have at least two phases. The one of the two phases is dient per unit is from 500 mg to 1500 mg. The techniques processed by melt extrusion technique and contains a water 50 described in the prior art do not give good results when the soluble or swellable binder.