EP0387808A2 — Compositions for the preparation of dosage-form active vitamins D3 and process for preparing stable dosage-form active vitamins D3 by using the same

USPTO Abstract

Compositions suitable for use in the preparation of dosage-form active vitamins D₃ are disclosed. Each composi­tion comprises an active vitamin D₃ and a stabilizer selected from polyvinylacetal diethylaminoacetate and hydroxypropylcellulose. Also disclosed are processes for the preparation of stable dosage-form active vitamins D₃. Each process comprises adding the above stabilizer to an ac­tive vitamin D₃ and then adding a pharmaceutically-­acceptable carrier to the resultant mixture.