Comparison of seven Oxethazaine containing antacids available in the Indian market

OBJECTIVE

This in-vitro study was designed to measure the quantity of acid neutralized by a suspension of a commercial antacid available in Indian markets at a labeled dose and to test the concept of the relative effectiveness of 7 different commercial antacids containing Oxethazaine.

METHODS

A simple back titration methodology was used to determine the acid neutralization capacity (ANC) of antacids.

RESULTS

It was observed that different antacids vary widely in their in vitro ANC. There was also a batch to batch variation noted for each brand of antacid. The analysis indicated that there was a significant difference of ANC in favor of AD versus other antacids studied.

CONCLUSION

Comparison of relative effectiveness indicates that AD has highest ANC in vitro amongst other antacids. However, the present study being in vitro, the effects of antacid may vary in vivo, as individual variations also contribute to the ultimate effectiveness of an antacid.

Identification of Forced Degradation Products of Itopride by LC-PDA and LC-MS

Degradation products of itopride formed under different forced conditions have been identified using LC-PDA and LC-MS techniques. Itopride was subjected to forced degradation under the conditions of hydrolysis, photolysis, oxidation, dry and wet heat, in accordance with the International Conference on Harmonization. The stress solutions were chromatographed on reversed phase C18 (250×4.6 mm, 5 μm) column with a mobile phase methanol:water (55:45, v/v) at a detection wavelength of 215 nm. Itopride degraded in acid, alkali and oxidative stress conditions. The stability indicating method was developed and validated. The degradation pathway of the drug to products II-VIII is proposed.