The subject-matter of the invention is a process for the preparation of tablets or film-coated tablets with increased active ingredient release, said tablets comprising as active ingredients a mixture of L-3,4-di-(hydroxy)-phenylalanine and L-alpha-(hydrazino)-alpha-(methyl)-3,4-di-(hydroxy)-phenyl propionic acid, by admixing any of L-3,4-di-(hydroxy)-phenylalanine and L-alpha-(hydrazino)-alpha-(methyl)-3,4-di(hydroxy)-phenyl propionic acid, or both of them, with hydrophilic diluents, and optionally with colouring agents, blending the mixture thus obtained with auxiliary agents conventionally used for the preparation of tablets and optionally with the other active ingredient, moreover with a solution of stearin in an organic solvent, optionally containing auxiliary agents conventionally used for the preparation of tablets, drying and granulating the mixture thus obtained, optionally admixing further auxiliary agents to the dry granulate, compressing it into tablets and, if desired, applying a film-coating onto the surface of the tablets thus obtained.
The process according to the invention provides tablets of appropriate quality with rapid active ingredient release.
本发明的主题是一种制备活性成分释放增加的片剂或薄膜包衣片剂的工艺,所述片剂包括作为活性成分的 L-3,4-二(羟基)-苯丙
氨酸和 L-α-(
肼基)-α-(甲基)-3、将 L-3,4-二(羟基)-苯丙
氨酸和 L-α-(
肼基)-α-(甲基)-3,4-二(羟基)-苯
丙酸中的任何一种或两种与亲
水性稀释剂混合,并可选择与
着色剂混合、将得到的混合物与制备片剂常用的辅助剂混合,也可与其他活性成分混合,还可与硬 脂素在有机溶剂中的溶液混合,其中可选择含有制备片剂常用的辅助剂,将得到 的混合物干燥并造粒,可选择在干燥的颗粒中进一步添加辅助剂,将其压制成片剂, 如果需要,还可在得到的片剂表面进行薄膜包衣。
根据本发明的工艺,片剂质量适当,有效成分释放迅速。