Filtering method for medicinal oral liquid preparations

Abstract

The invention discloses a filtering method for medicinal oral liquid preparations. The method comprises the following steps: arranging a polyester filter cloth on a plate frame filter, then passing a talc powder suspension through the polyester filter cloth, filtering clearly, and thereby forming a talcum powder coating layer on the polyester filter cloth; and then passing the medicinal oral liquid preparations to be filtered through the plate frame filter. Three preparations of a compound fresh bamboo juice liquid, a Changyanning syrup and a compound glycyrrhiza oral solution are filtered by the method, and test results show that, the three preparations filtered by the polyester filter cloth are all clear, the quality is qualified, and after speeding up for 6 months, the quality is also qualified. With the polyester filter cloth as a filter material, the talc powder as a filter aid, the filtering method ensures the filtering quality, reduces the cost, relieves the labor intensity, greatly promotes the filtering process preparation efficiency and the product profit, strengthens the competitiveness of preparation preparing enterprises, and has good economic benefits and scientific value.

Description

technical field [0001] The invention relates to a method for filtering medicinal oral liquid preparations. Background technique [0002] Filtration, as one of the key process steps in the preparation of pharmaceutical oral liquid preparations, aims to remove impurities in the oral liquid so as to meet the clarity requirements of the medicinal liquid. The pros and cons of the filtration process directly affect the quality and cost of the product. At present, filter paper is generally used as a filter material in the filtration preparation process of medicinal oral liquid. Although this traditional process can obtain products with qualified clarity, there are defects such as frequent filter paper replacement and difficult cleaning in actual operation. Filter paper not only increases the cost, but also increases the labor intensity. It has become an important link that urgently needs to be improved in the filtration process of medicinal oral liquids. Contents of the inventi...

AI Technical Summary

Problems solved by technology

Although this traditional process can obtain products with qualified clarity, there are defects such as frequent filter paper replacement and difficult cleaning in actual operation.

Filter paper not only increases the cost, but also increases the labor intensity. It has become an important link that urgently needs to be improved in the filtration process of pharmaceutical oral liquids.

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