Stability Indicating HPTLC Method for Analysis of Rifaximin in Pharmaceutical Formulations and an Application to Acidic Degradation Kinetic Study

Table 2

Applicability of the proposed HPTLC method for determination of rifaximin in pharmaceutical formulation.

Drug	Brand name	Amount of rifaximin present (mg per tablet)	% amount of rifaximin found^a	SD	% RSD
Rifaximin	RCIFAX	400	98.26	1.58	1.61
	RCIFAX	200	96.69	1.20	1.24
	RIFAGUT	200	95.59	1.68	1.76
	TORFIX	200	98.02	1.66	1.69
	RIXMIN	200	97.22	1.01	1.04

aAverage of three replicates.