This invention relates to the field of pharmaceutical preparations, specifically providing
anhydrous rimantadine hydrochloride granules and a method for preparing the same. The
anhydrous rimantadine hydrochloride granules are a mixture of
drug-containing taste-masked granules and
flavor-correcting granules. The
drug-containing taste-masked granules comprise
rimantadine hydrochloride and a taste-masking material, wherein the taste-masking material is a lipid or waxy material. This invention, by selecting a lipid or waxy material as the taste-masking material and mixing it with rimantadine hydrochloride to prepare
drug-containing taste-masked granules, and then mixing them with
flavor-correcting granules, effectively masks the taste and allows for direct
swallowing without water, greatly improving
medication adherence, especially suitable for children, the elderly, and other individuals with
swallowing difficulties. Furthermore, the preparation method of this invention is simple, requires minimal equipment, is low-cost, and suitable for large-scale production.