Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K9/00—Medicinal preparations characterised by special physical form
  • A61K9/20—Pills, tablets, discs, rods
  • A61K9/2072—Pills, tablets, discs, rods characterised by shape, structure or size; Tablets with holes, special break lines or identification marks; Partially coated tablets; Disintegrating flat shaped forms
  • A61K9/2077—Tablets comprising drug-containing microparticles in a substantial amount of supporting matrix; Multiparticulate tablets
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/33—Heterocyclic compounds
  • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
  • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
  • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
  • A61K31/4402—Non condensed pyridines; Hydrogenated derivatives thereof only substituted in position 2, e.g. pheniramine, bisacodyl
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/33—Heterocyclic compounds
  • A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
  • A61K31/365—Lactones
  • A61K31/375—Ascorbic acid, i.e. vitamin C; Salts thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K33/00—Medicinal preparations containing inorganic active ingredients
  • A61K33/06—Aluminium, calcium or magnesium; Compounds thereof, e.g. clay
  • A61K33/08—Oxides; Hydroxides
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K9/00—Medicinal preparations characterised by special physical form
  • A61K9/20—Pills, tablets, discs, rods
  • A61K9/2004—Excipients; Inactive ingredients
  • A61K9/2009—Inorganic compounds
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K9/00—Medicinal preparations characterised by special physical form
  • A61K9/20—Pills, tablets, discs, rods
  • A61K9/2004—Excipients; Inactive ingredients
  • A61K9/2013—Organic compounds, e.g. phospholipids, fats
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K9/00—Medicinal preparations characterised by special physical form
  • A61K9/20—Pills, tablets, discs, rods
  • A61K9/2095—Tabletting processes; Dosage units made by direct compression of powders or specially processed granules, by eliminating solvents, by melt-extrusion, by injection molding, by 3D printing
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K9/00—Medicinal preparations characterised by special physical form
  • A61K9/20—Pills, tablets, discs, rods
  • A61K9/28—Dragees; Coated pills or tablets, e.g. with film or compression coating
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K9/00—Medicinal preparations characterised by special physical form
  • A61K9/20—Pills, tablets, discs, rods
  • A61K9/28—Dragees; Coated pills or tablets, e.g. with film or compression coating
  • A61K9/2893—Tablet coating processes
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
  • A61P1/10—Laxatives

Definitions

• Formulations and methods of manufacturing formulations for use in colonic evacuation are disclosed herein.
• a solid dosage formulation that includes an intra-granular fraction intermingled with an extra-granular fraction, wherein the intra-granular fraction includes granules comprising at least one osmotic evacuant agent, at least one antacid, and a first pharmaceutically acceptable excipient component, and wherein the extra-granular fraction includes one or more organic acids, a non-metallic lubricating element, and a second pharmaceutically acceptable excipient component.
• a method of evacuating a colon of a patient that includes orally administering to the patient, within a 24-hour time frame, between 25 and 30 tablets with a liquid, wherein each of the tablets includes an intra- granular fraction intermingled with an extra-granular fraction, wherein the intra-granular fraction includes granules comprising sodium picosulfate, magnesium oxide, simethicone and a first pharmaceutically acceptable excipient component, wherein the extra-granular fraction includes ascorbic acid and a second pharmaceutically acceptable excipient component, and wherein all the tablets combined yield a total dose of about 30 mg sodium picosulfate, about 7 g of magnesium oxide, about 1 g of ascorbic acid, and about 100 mg of simethicone.
• the formulation requires a minimum ingestion of fluid while avoiding side effects of fluid shifts.
• the formulation has an optimal drug release profile and suitable stability to provide adequate shelf life.
• a method of manufacturing a solid dosage formulation that includes (i) wet granulating at least one osmotic evacuant agent, at least one antacid, and a first pharmaceutically acceptable excipient component to form an intra-granular fraction; (ii) blending the intra-granular fraction obtained from step (i) with elements of an extra-granular fraction comprising one or more organic acids, a non-metallic lubricating element, and a second pharmaceutically acceptable excipient component; and (iii) compressing the blend obtained from step (ii) into tablets.
• FIG. 1 is a graph showing the release of sodium picosulfate over time from formulations of the present disclosure.
• FIG. 2 is a bar graph showing the release of sodium picosulfate over time from formulations of the present disclosure.
• a solid dosage formulation includes an intra-granular fraction intermingled with an extra-granular fraction, wherein the intra- granular fraction includes granules comprising at least one osmotic evacuant agent, at least one antacid, and a first pharmaceutically acceptable excipient component, and wherein the extra-granular fraction includes one or more organic acids, a non-metallic lubricating element, and a second pharmaceutically acceptable excipient component.
• intra-granular fraction refers to those components of a formulation of the present invention that are within granules.
• extra-granular fraction refers to those components of a formulation of the present invention that are outside of the granules. During manufacturing, the extra-granular fraction includes the ingredients that are added to the intra-granular fraction post-drying.
• the intra-granular fraction (i.e. granules) may for example comprise up to 50% of the total weight of the formulation, e.g. from 30% to 50% by weight of the formulation.
• the at least one osmotic evacuant agent component of the intra-granular fraction may for example comprise up to 1 % of the total weight of the formulation.
• the at least one antacid component of the intra-granular fraction may for example comprise up to 20% of the total weight of the formulation.
• the first pharmaceutically acceptable excipient component of the intra-granular fraction may for example comprise up to 30% of the total weight of the formulation.
• the granules of the intra-granular fraction may, for example, have a size of from 25 microns to 1000 microns.
• the granules of the intra-granular fraction may, for example, have an average size of from 150 microns to 300 microns.
• the extra-granular fraction may for example comprise up to 50% of the total weight of the formulation.
• the one or more organic acids of the extra-granular fraction may for example comprise up to 40% of the total weight of the formulation.
• the non-metallic lubricating element of the extra-granular fraction may for example comprise up to 3%) of the total weight of the formulation.
• the second pharmaceutically acceptable excipient component of the extra-granular fraction may for example comprise up to 10% of the total weight of the formulation.
• Suitable osmotic evacuant agents include, but are not limited to, sulfate based laxatives and phosphate based laxatives.
• sulfate based laxatives include, but are not limited to, sodium picosulfate, sodium sulfate and magnesium sulfate. A mixture of two or more sulfate based laxatives may be used.
• phosphate based laxatives include, but are not limited to, sodium dihydrogen phosphate, disodium hydrogen phosphate, sodium biphosphate, sodium acid pyrophosphate, and/or mixtures thereof.
• the osmotic evacuant agent may further comprise an antacid selected from the group consisting of magnesium oxide, calcium carbonate, magnesium alginate, magnesium hydroxide, magnesium carbonate, magnesium citrate, magnesium aspartate, and magnesium trisilicate.
• the antacid is magnesium oxide.
• the osmotic evacuant agent comprises a mixture of sodium picosulfate and magnesium oxide.
• the sodium picosulfate comprises micronized sodium picosulfate.
• the formulation of the present disclosure may be a tablet.
• the tablet may be a compressed tablet, a coated tablet or an exploding tablet.
• the formulation may comprise a capsule. Examples include a coated capsule or an exploding capsule; a lozenge; or a pill.
• the formulation may have a delayed release profi le, a slow release profile or a controlled release profile of one or more of the at least one osmotic evacuant agent; the one or more organic acids; or the at least one excipient including a non-metallic lubricating agent.
• the delayed release of one or more components of the pharmaceutical composition may be formulated with a coating as noted above. Further, the delayed release of one or more of the components may be achieved by other formulation methods including multiple layers or compartments of the solid oral dosage form.
• Suitable organic acids include, but are not limited to, ascorbic acid, citric acid, tartaric acid, mixtures of citric acid and ascorbic acid, and mixtures of tartaric acid in combination with ascorbic acid and/or citric acid.
• the lubricating agent of the formulation comprises a fatty acid ester.
• the lubricating agent may comprise glyceryl behenate.
• Compritol® 888ATO is used as the glyceryl behenate.
• the fatty acid ester may result from one or more of the following fatty acids: caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, lignoceric acid, oleic acid, linoleic acid, erucid acid, linoleic acid, or coconut oil.
• the formulation may further include a number of other excipients including a diluent selected from one or a mixture of any one or more of the following: mannitol, lactose monohydrate, microcrystalline cellulose (e.g. sold under the trade name Avicel® PH 101 ), or sorbitol.
• a diluent selected from one or a mixture of any one or more of the following: mannitol, lactose monohydrate, microcrystalline cellulose (e.g. sold under the trade name Avicel® PH 101 ), or sorbitol.
• the formulation may further include a binder agent.
• the formulation may include polyvinyl pyrrolidone (PVP), including PVP K30; hydroxypropylcellulose, or polyethylene glycol (PEG), including PEG 10000 or PEG 4000.
• PVP polyvinyl pyrrolidone
• PEG polyethylene glycol
• the formulation also includes a stabilizing agent. Suitable stabilizing agents include, but are not limited to, sodium metabisulfite, sodium bisulphite and sodium sulfite.
• a disintegrant may also be included in the formulation and may include cross linked povidone (crospovidone).
• crospovidone cross linked povidone
• SSG sodium starch glycolate
• An anti-foaming agent may also be included in the formulation.
• Suitable anti- foaming agents include, but are not limited to, polydimethylsiloxane, hydrated silica gel, and mixtures of polydimethylsiloxane and hydrated silica gel.
• the anti- foaming agent is simethicone.
• a further example of an anti-foaming agent is dimethiconc.
• An anti-adherent element may also be included in the formulation for the intra- granular fraction and for the extra-granular fraction and may be the same or different and may comprise one or more (known) substances or compounds which (in appropriate amounts) are capable of reducing the stickiness of the composition or formulation, for example, inhibiting adherence to metal surfaces.
• Suitable anti-adherent type materials include, but are not limited to, talc and silicon-containing compounds such as colloidal silicon dioxide (e.g. sold under the trade name Acrosil®) as well as mixtures thereof.
• the formulation may be orally administered with any liquid suitable for ingestion.
• any liquid suitable for ingestion Preferably, water, mineral water, glucose-free mineral water, glucose-free cordial or glucose-free soft drink are used.
• the volume of liquid consumed with the formulation varies from 250 mL to 2,000 mL, for example, 250 mL to 1 ,500 mL or 500 mL to 1 ,500 mL or 2,000 mL.
• the formulation is orally administered to a patient over a period of time.
• the formulation is usually prepared as a number of tablets or capsules which are taken over a period of time.
• a typical total dose of the osmotic evacuant agent is in the range of from 1 to 100 mg, preferably 5 to 50 mg, preferably 10 to 40 mg, more preferably 30 mg.
• the evacuant agent in such a dosage regimen comprises a sulfate based laxative.
• a typical example of a treatment regimen involves the preparation of the formulation into approximately 30 tablets or capsules. Approximately 5 tablets or capsules are ingested with approximately one glass of liquid over a period of 1 second to 20 minutes, typically 5 seconds to 5 minutes, typically 10 seconds to 3 minutes, typically 30 seconds to 15 minutes, typically 15 minutes to 20 minutes, typically 1 minute to 10 minutes, more typically 1 minute to 6 minutes. A further 5 tablets or capsules are ingested with approximately one glass of liquid over 10 seconds to 20 minutes, typically 30 seconds to 15 minutes, or 15 minutes to 20 minutes, typically 1 minute to 10 minutes, more typically 1 minute to 6 minutes after approximately 20 minutes to 2.5 hours, typically 25 minutes to 1 hour, more typically 30 to 40 minutes. This regimen is repeated until all the tablets or capsules have been ingested.
• a typical example of a treatment regimen of the invention involves the preparation of the formulation into approximately 5 to 40 tablets or capsules. Approximately one fifth of the tablets or capsules are ingested with approximately one glass of liquid over a period of 1 second to 20 minutes, typically 5 seconds to 5 minutes, typically 10 seconds to 3 minutes, typical ly 30 seconds to 15 minutes, typically 15 minutes to 20 minutes, typically 1 minute to 10 minutes, more typically 1 minute to 6 minutes. A further one fifth of the tablets or capsules are ingested with approximately one glass of liquid over 10 seconds to 20 minutes, typically 30 seconds to 15 minutes, or 15 minutes to 20 minutes, typically 1 minute to 10 minutes, more typically 1 minute to 6 minutes after approximately 20 minutes to 2.5 hours, typically 25 minutes to 1 hour, more typically 30 to 40 minutes. This regimen is repeated until all the tablets or capsules have been ingested.
• the typical examples of the treatment regimen take 2 to 15 hours, for example, 2 to 12 hours or 2.5 to 15 hours, preferably 2.5 to 6.5 hours, more preferably 2 to 4.5 hours, even more typically 2 to 3.5 hours.
• the treatment regimen is administered in two parts, there is usually a difference of 4 to 16 hours, typically 4 to 12 hours, preferably 4 to 8 hours, more preferably 4 to 6 hours, between the administration of the first treatment regimen and the administration of the second treatment regimen.
• the formulations of the present disclosure are also useful in the treatment of certain gastrointestinal conditions such as small bowel bacterial overgrowth and irritable bowel syndrome as well as useful in treating acute or chronic bacterial bowel infections, for example, infection of the bowel with one or more bacteria including Campylobacter jejuni, Yersinia enterocolitica, Clostridium difficile, Cryptosporidium isospora belli.
• the formulation of the present disclosure can also be used in the treatment of fungal or viral infections in the bowel.
• the osmotic colonic evacuant of the present invention can also be used in the treatment of chronic inflammatory bowel disease such as Crohn's disease or ulcerative colitis.
• the formulation may be produced by granulation.
• the granulation steps may include dry granulation.
• the granulation steps may include wet granulation.
• the formulation includes an intra-granular fraction intermingled with an extra- granular fraction.
• the at least one osmotic evacuant agent is granulated with one or more excipients and dried to provide an initial granulation mixture.
• the one or more organic acid is added to the initial granulation mixture to provide a second mixture.
• one or more lubricating agents may be added to the second mixture and the formulation mixed for a pre-determined time period.
• the formulation may further comprise one or more layers or compartments.
• the at least one osmotic evacuant agent includes a compound having metallic ions and wherein the compound having metallic ions is in a different layer or compartment to that containing the one or more organic acid.
• the at least one osmotic evacuant agent includes magnesium oxide
• the formulation in solid dosage form would include the magnesium oxide in a separate layer or compartment to the acid.
• ascorbic acid is present, such a physical separation would significantly reduce the degradation of the acid in the presence of metallic cations.
• the solid dosage formulation may comprise a coating layer to relatively delay dissolution beyond the mouth of a patient.
• a suitable coating agent may include PVA, Ti02, talc, lecithin (soy), and xantham gum (e.g. sold under the name Opadry® AMB White). Further, the coating agent may include PVA, polyethylene glycol and talc (sold under the trade name Opadry® II Clear).
• the coating layer may further include methyl methacrylatc and diethylaminoethyl methacrylate copolymer.
• An example of suitable lubricants is sold under the trade name Kollicoat® and the various compositions are herein incorporated as examples.
• Table 1 lists the actives and excipients used in the formulation development studies: Table 1
• Powder blends were prepared as follows: the required amounts of active and excipients were dispensed into suitable containers. To a high shear mixer the following were added in order: ascorbic acid (half), MgO (half), SSG, sodium picosulfate, binder, simethicone, MgO (half) and ascorbic acid (half). This mixture was mixed for a predetermined time period, for example, 2 mins at high speed with the mixer shaken/tilted occasionally. Small portions of the powder blend were transferred into a jacketed vessel that was preheated at a selected temperature, for example, 62°C -65°C and mixed with a spatula unti l granules were formed.
• Melt agglomeration is a process by which the solid fine particles are bound together into agglomerates, by agitation, kneading, and layering, in the presence of a molten binding liquid. Dry agglomerates are obtained as the molten binding liquid solidifies on cooling.
• the main advantages of the procedure are that neither solvent nor water is used in this process, hence the procedure is suitable for molecules that dissociates in aqueous media. Fewer processing steps are needed thus time consuming drying steps are eliminated.
• Formulations were prepared using a jacketed vessel and two different hydrophilic meltable binders, PEG 10,000 and PEG 4,000. Both meltable binders were milled down using a Kenwood mixer as they were relatively large flakes. Two methods were used to add the binder to the formulation:
• Method A The binder was added directly to the formulation blends and mixed either using the low shear mixer (Kenwood) or the Turbula mixer.
• Powder blends were prepared as follows:
• the active was then sandwiched between diluent in a high shear mixer (Kenwood) by adding in the following order: ascorbic acid (half), MgO (half), SSG, sodium picosulfate, binder, simethicone, MgO (half) and ascorbic acid (half).
• Method B A single batch of the formulation prepared by hot melt granulation was also prepared by pre-melting the binder in the jacketed vessel, to investigate the effect of the method of the preparation on the flow properties. The other steps were as above.
• caplet tooling Using caplet tooling, a tablet was created. Various settings of the tabletting machine were used but the smallest tablets prepared by hand were ⁇ 1. 1 g (target weigh was 860 mg/ caplet for 30 units required). Hence it was decided to increase the fill weight of the caplets and reduce the number of caplets required to deliver the target doses (20 caplets rather than 30). A number of caplets were manually produced using two different machine setting to obtain different hardness and the data indicated that the caplets were uniform in terms of weight and general dimensions. The softer caplets showed a longer disintegration time of just under 14 mins. Hence more super disintegrant will be required in this formulation to reduce the disintegration time. Further, the caplets showed also a change in colour (mottling effect) which might be due to the degradation of one of the excipients during granulation or tabletting.
• a formulation blend was prepared by adding ProSolv® Easy ' Fab (a commercially available blend containing, MCC 102, Si0 2 , SSG and sodium stearyl fumarate) and simethicone suitable for direct compression. The theoretical fill weight was increased to allow dosing 24 caplets. The formulation was further optimized by adding 5% Kluccl®, Mannitol and increased level of super disintegrant. Caplets were produced in automatic mode using three different settings and results for the tabletting indicated that caplets produced by direct compression were uniform and the hardness varies from 25N (softest) to 78N (hardest), the increase in SSG level reduced the disintegration time, and that all 3 types of caplets, with various hardness's, failed the friability test. The results indicated that this formulation blend was not suitable for tabletting.
• a formulation was tabletted in automatic mode using 2 different machine settings in order to produce caplets with l OOOmg theoretical weight (weight corresponding to 30 caplets required for dosing). Caplets with increased weight were also produced at the hardest setting possible, in order to reduce the number of caplets required for administration. Data indicated that:
• Caplets produced were generally uniform and the hardness varied from 61 N (softest) to 99 (hardest).
• Wet granulation involves addition of a liquid solution (with or without binder) to powders, to form a wet mass. Typically granules are formed by binding the powder together with help from an adhesive.
• the powders to be granulated and powdered binder are added and mixed prior to the introduction of the aqueous solution.
• the wet massing step the components are massed to a predetermined end point.
• the wet mass is dried to a predetermined end point, commonly measured with a test called the loss on drying (LOD).
• LOD loss on drying
• the dried granules are then milled to reduce the size of any caked material into a standardized particle size distribution.
• the final blend is prepared by adding the extra granular excipients, and lubricated. Blends were prepared as follows:
• a formulation was tabletted manually using a 19x9 mm caplet tooling using three different machine settings to generate caplets with different hardness'.
• the caplets were uniform in weight and physical characterization but had a high disintegration time (more than 1 5 mins for the softest caplets). This suggested that the level of the super disintegrant needed to be increased to reduce the disintegration time to under 15 mins.
• a new formulation blend was prepared where lactose was replaced with mannitol (due to a potential aillard reaction between NH group from sodium picosulfate and lactose) and super disintegrant (SSG) level was increased to improve hardness and disintegration time.
• SSG super disintegrant
• Caplets produced were uniform in terms of weight and the hardness varies from 64 N (softest) to 133 N (hardest).
• caplets with 1275 mg theoretical weight required for 30 caplets
• new caplets were produced with increased theoretical weight (1593 mg) in order to reduce the number of caplets administered (24 caplets/patient).
• Caplets that passed both disintegration and friability test were prepared. However the caplets were thicker and potentially difficult to swallow.
• Quaternary mixtures with components ((250 ms MsO + 500ms AA+20 ms NaP+25 ms Sulphites for 100 ms acids)
• Formulations containing Avicel as intra-granular excipient have a smaller median particle diameter compared to the formulation containing no Avicel intra-granular. This suggests that the formulations containing some Avicel intra- granular are more suitable for further studies, as bigger granules might lead to segregation caused by particle size difference between materials in a bulk blend.
• Formulation A was prepared by wet granulation at ⁇ 1 .5kg scale, yielding enough batch to prepare between 25 and 30 tablets, wherein al l the tablets combined yield a total dose of about 30 mg sodium picosulfate, about 7 g of magnesium oxide, about 1 5 g of ascorbic acid, and about 100 mg of simethicone.
• Table 3 lists the components of Formulation A :
• Median Particle Diameter for the intra-granular granules of Formulation A was 289 microns.
• Formulation B was prepared by wet granulation at ⁇ 1.5kg scale, yielding enough batch to prepare between 25 and 30 tablets, wherein all the tablets combined yield a total dose of about 30 mg sodium picosulfate, about 7 g of magnesium oxide, about 15 g of ascorbic acid, and about 100 mg of simethicone.
• Table 4 lists the components of Formulation
• Median Particle Diameter for the intra-granular granules of Formulation B was 175 microns.
• the coated formulations of Formulation A were:
• Coated Formulation (i) Formulation A coated using Opadry® AMB White and stored at 25°C/60%RH;
• Coated Formulation (ii) Formulation A coated using Opadry® AMB White and stored at 40°C/75%RH
• Coated Formulation (iii) Formulation A coated using Opadry® II clear at 40°C/75%RH.

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