A sustained release preparation comprising:
(a) chitin, chitosan, or a mixture thereof
(b) anionic polymer compounds such as those having a carboxyl group, a sulfonic acid group, or a group capable of providing the same, and
(c) pharmaceutically active agents. This sustained release preparation can provide the desired sustained-release or dissolution of the pharmaceutically active agents in human organs irrespective of the acidity (i.e., pH conditions) therein.
一种缓释制剂,包括:(a) 甲壳素、
壳聚糖或它们的混合物;(b) 阴离子聚合物化合物,如具有羧基、
磺酸基或能提供相同羧基、
磺酸基的化合物;(c) 药物活性剂。 这种缓释制剂能在人体器官中提供所需的药物活性剂的缓释或溶解,而不受其中酸度(即 pH 值条件)的影响。