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US 5,472,714 AGranted
Double-layered oxcarbazepine tablets
AssigneeCiba-Geigy Corporation
InventorJacques Bourquin
Life of this patent
Estimating the term…
Abstract
The invention relates to color-stable tablets for the therapeutic drug oxcarbazepine, which tablets are provided with a hydrophilic, permeable layer containing white pigments and a hydrophilic, permeable outer layer containing white pigments in combination with iron(II) oxide pigments.
Claims1
A double-layered tablet, comprising:
- a) a tablet core containing a dosage unit of the therapeutic drug 10,11-dihydro-10-oxo-5H-dibenzo[b,f]azepine-5-carboxamide;
- b) a hydrophilic, permeable inner layer consisting of hydroxypropyl methyl cellulose and polyethylene glycol 8000 containing titanium dioxide pigments, and
- c) a hydrophilic, permeable outer layer consisting of hydroxypropyl methyl cellulose and polyethylene glycol 8000 containing titanium dioxide pigments in combination with iron(II)oxide pigments.
Dependencies are inferred from the claim text.