Stability Indicating RP-HPLC Method for the Simultaneous Determination of Atorvastatin Calcium, Metformin Hydrochloride, and Glimepiride in Bulk and Combined Tablet Dosage Form

Table 3

Recovery study of ATR, MET, and GLM.

Add. conc.	MET		ATR		GLM
	Obt. conc.	(%) Recovery	Obt. conc.	(%) Recovery	Obt. conc.	(%) Recovery
80% (40)	39.49 ± 0.12	98.74 ± 0.30	40.02 ± 0.25	100.05 ± 0.64	40.57 ± 0.36	101.44 ± 0.92
100% (50)	50.49 ± 0.33	100.98 ± 0.67	48.72 ± 0.17	97.45 ± 0.35	49.05 ± 0.03	98.1 ± 0.07
120% (60)	59.8 ± 0.70	99.67 ± 1.17	61.17 ± 0.93	101.96 ± 1.55	60.51 ± 0.16	100.86 ± 0.27

Add. conc.: added concentration; Obt. conc.: obtained concentration; .