[Comparative evaluation of the anionic superdisintegrant incorporation mode on the quality of ranitidine tablets]

The present study was based on the impact of the superdisintegrants incorporation mechanism on the immediate realese of the tablets final performances. The aim was the selection of the working method to obtain Ranitidine 150 mg tablets with the desiderate quality and in reproducible conditions.

The effect of the incorporation mode of sodium starch glycolate on the aspect, granules size distribution and flowing properties of the lubricated product, and also the weight uniformity, hardness, disintegration, friability, and dissolution of the Ranitidine 150 mg tablets prepared by dry granulation was studied. The addition mode of the disintegrant was realized in three ways: intragranular, extragranular, and distributed equally between the two phases. The distribution range for the tablets weight was established. Relative standard distribution was calculed for the weight and hardness of the uncoated tablets.

The powder flow and, implicit, the weight uniformity of the uncoated tablets was positive influenced by the extragranular incorporation of the superdisintegrant. The disintegration time was identical for all the three disintegrant addition modes, and the hardness and the friability were not significantly influenced by working method, the obtained values were similar. For the developed formulations, the percent of the ranitidine dissolution was high, but higher in the extragranular incorporation.

For the product quality the extragranular addition mode seemed the best method to incorporate the superdisintegrant.