Granulate formulation of 5-methyl-1-phenyl-2-(1H)-pyridone and method of making the same

1. A granulate formulation of 5-methyl-1-phenyl-2-(1H)-pyridone, comprising:

granules comprising 5-methyl-1-phenyl-2-(1H)-pyridone and a glidant; and

one or more extragranular excipients comprising an extragranular glidant.

2. The formulation of claim 1 , wherein the granules comprise the glidant in an amount of at least about 1% by weight based on total weight of the formulation.

3. The formulation of claim 1 , wherein the granulate formulation comprises the extragranular glidant in an amount of about 0.1% to about 5% by weight, based on the total weight of the formulation.

4. The formulation of claim 1 , wherein one or both of the glidant and the extragranular glidant is selected from the group consisting of silica, silicified cellulose, sodium stearate, magnesium aluminum silicate, pyrogenic silica, hydrated sodium silioaluminate, cellulose, calcium phosphate, sodium lauryl sulfate, pregelatinized starch, talc, and physical or coprocessed combinations thereof.

5. The formulation of claim 1 , wherein the 5-methyl-1-phenyl-2-(1H)-pyridone is present in an amount of about 60% to about 95% by weight, based on the total weight of the formulation.

6. The formulation of claim 1 , wherein the granulate formulation comprises one or more pharmaceutically acceptable excipients selected from a disintegrant, a binder, a filler, and a lubricant.

7. The formulation of claim 6 , wherein, when present:

the disintegrant is selected from the group consisting of agar-agar, algins, calcium carbonate, carboxymethylcellulose and salts thereof, cellulose, clays, corn starch, croscarmellose sodium, crospovidone, gums, methyl cellulose, polacrilin potassium, sodium alginate, cross-linked polyvinylpyrrolidone, sodium starch glycolate, starch, and combinations thereof;

the binder is selected from the group consisting of hydroxymethylcellulose, hydroxypropylcellulose, polyvinylpyrrolidone, calcium carbonate, dicalcium phosphate, carbomers, cellulose acetate phthalates, copovidone, hydroxypropyl methyl cellulose, ethylene glycol and vinyl glycol grafted copolymer, isomalt, poloxamer, polyethylene oxide, polymethacrylates, and combinations thereof;

the filler is selected from the group consisting of calcium carbonate, calcium phosphate, dibasic calcium phosphate, calcium silicate, tribasic calcium sulfate, calcium carboxymethylcellulose and salts thereof, cellulose, dextrin derivatives, dextrin, dextrose, fructose, isomalt, kaolin, lactitol, lactose, magnesium carbonate, magnesium oxide, maltitol, maltodextrins, maltose, mannitol, microcrystalline cellulose, sodium bicarbonate, sodium carbonate, sorbitol, starch, sucrose, sugar, xylitol, and combinations thereof; and

the lubricant is selected from the group consisting of agar, calcium stearate, ethyl oleate, ethyl laureate, glycerin, glyceryl behenate, glyceryl palmitostearate, hydrogenated vegetable oil, magnesium oxide, magnesium stearate, mannitol, poloxamer, glycols, sodium benzoate, sodium lauryl sulfate, sodium stearate, sorbitol, stearic acid, talc, zinc stearate, and combinations thereof.

8. The formulation of claim 6 , wherein, when present:

the binder is present in an amount of about 1% to about 10% by weight based on the total weight of the formulation;

the disintegrant is present in an amount of 0% to about 10% by weight based on the total weight of the formulation;

the filler is present in an amount of about 2% to about 30% by weight based on the total weight of the formulation; and

the lubricant is present in an amount of about 0.05% to about 2% by weight based on the total weight of the formulation.

9. The formulation of claim 6 , wherein the filler is microcrystalline cellulose, the glidant is silica, the extragranular glidant is silica, the binder is polyvinylpyrrolidone, the disintegrant is croscarmellose sodium, and the lubricant is magnesium stearate.

10. The formulation of claim 1 , wherein:

the granules comprise:

the glidant in an amount of about 1 wt % to about 3 wt % based on the total weight of the formulation,

a binder in an amount of about 1 wt % to about 10 wt % based on the total weight of the formulation, and

a filler in an amount of about 2 wt % to about 30 wt %, and

the one or more extragranular excipients comprise one or more of:

a disintegrant in an amount of 0 wt % to about 10 wt % based on the total weight of the formulation, and

a lubricant in an amount of about 0.05 wt % to about 2 wt % based on the total weight of the formulation.

11. The formulation of claim 1 , wherein the granulate formulation comprises an effective amount of the glidant and the extragranular glidant to provide a flow function coefficient of the formulation of at least about 4.