ORAL RAPID RELEASE PHARMACEUTICAL FORMULATION FOR PYRIDYLMETHYLSULFINYL-BENZIMIDAZOLES
The invention relates to solid oral pharmaceutical compositions in the form of pellets, mini-tablets, tablets, or capsules, comprising an optionally substituted 2-(pyridylmethylsulfinyl)-1H-benzimidazole, for example esomeprazole, and carrageenan, and optionally one or more excipients. Surprisingly, it has been found that these compositions are stable and rapidly release the active ingredient. The pellets or mini-tablets may be coated as such, or filled in capsules or pressed into tablets, with a polymer, which dissolves only at a pH value of 5 or higher, optionally over a stabilizing intermediate layer.
1 . Pharmaceutical composition in solid oral dosage form comprising an optionally substituted 2-(pyridylmethylsulfinyl)-1H-benzimidazole and carrageenan.
2 . Pharmaceutical composition according to claim 1 , characterized in that the pyridylmethylsulfinyl-benzimidazole is omeprazole, esomeprazole, pantoprazole, lansoprazole or rabeprazole.
3 . Pharmaceutical composition according to claim 1 , characterized in that the pyridylmethylsulfinyl-benzimidazole is esomeprazole.
4 . Pharmaceutical composition according to claim 1 , characterized in that the pyridylmethylsulfinyl-benzimidazole is esomeprazole in amorphous form.
5 . Pharmaceutical composition according to claim 1 , characterized in that the pyridylmethylsulfinyl-benzimidazole is esomeprazole magnesium salt dihydrate.
6 . Pharmaceutical composition according to claim 1 , characterized in that the pyridylmethylsulfinyl-benzimidazole is esomeprazole magnesium salt trihydrate.
7 . Pharmaceutical composition according to anyone of claims 1 to 6 , characterized in that the solid oral dosage forms are pellets, tablets, mini-tablets, or capsules.
8 . Pharmaceutical composition according to claim 7 , characterized in that the solid oral dosage forms are pellets.
9 . Pharmaceutical composition according to claim 7 , characterized in that the solid oral dosage forms are mini-tablets.
10 . Pharmaceutical composition according to anyone of claims 1 to 9 , characterized in that it further contains one or more excipients.
11 . Pharmaceutical composition according to anyone of claims 1 to 10 , characterized in that it comprises, as an excipient, a buffer mixture with a pH value above 6.0.
12 . Pharmaceutical composition according to anyone of claims 3 to 11 comprising 10-40% esomeprazole and 5-50% carrageenan.
13 . Pharmaceutical composition according to anyone of claims 3 to 12 comprising 25-35% esomeprazole and 9-20% carrageenan.
14 . Pharmaceutical composition according to anyone of claims 1 to 13 , characterized in that it is coated with a polymer, which dissolves only at a pH value of 5 or higher.
15 . Pharmaceutical composition in the form of a capsule or tablet coated with a polymer, which dissolves only at a pH value of 5 or higher, comprising pellets or mini-tablets according to anyone of claims 1 to 13 .
16 . Pharmaceutical composition according to claim 14 or 15 , characterized in that it comprises a stabilizing intermediate layer below the polymer layer, which dissolves only at a pH value of 5 or higher.
17 . Pharmaceutical composition according to anyone of claims 1 to 16 for use as anti-ulcus medicament and for the prevention and treatment of diseases connected with excess production of gastric acid in mammals and, in particular, in humans.