Claims
- 1. A slow-release sodium valproate tablet comprising a core and a coating covering the surface of said core, wherein said core comprises sodium valproate and said coating comprises a mixture of ethyl cellulose and silicic acid anhydride.
- 2. A slow-release sodium valproate tablet as claimed claim 1, wherein said silicic acid anhydride is present in an amount of from 0.1 to 0.7 part by weight per part by weight of ethyl cellulose.
- 3. A slow-release sodium valproate tablet as claimed in claim 1, wherein said silicic acid anhydride is insoluble in water and dispersible in water or an organic solvent to form a colloidal dispersion.
- 4. A slow-release sodium valproate tablet as claimed in claim 2, wherein said silicic acid anhydride is insoluble in water and dispersible in water or an organic solvent to form a colloidal dispersion.
- 5. The slow-release sodium valproate tablet of claim 1 wherein said coating is in an amount of from 2 to 10% by weight based on the weight of the core.
Priority Claims (1)
Number |
Date |
Country |
Kind |
4-161785 |
May 1992 |
JPX |
|
Parent Case Info
This is a Continuation of application Ser. No. 08/067,107 filed 26 May 1993 abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0315414 |
Nov 1988 |
EPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
67107 |
May 1993 |
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