Validated Stability Indicating RP-HPLC Method for Simultaneous Estimation of Codeine Phosphate and Chlorpheniramine Maleate from Their Combined Liquid Dosage Form

Table 5

Result of accuracy studies.

Name of drug	Amount in sample (mg)	Amount of drug spiked in mg, (% recovery level)	Amount found, (mg) AM ± SD*	% SE	% RSD
	20	16, (80%)	36.37 ± 0.06	0.034	0.18
CP	20	20, (100%)	40.36 ± 0.10	0.057	0.25
	20	24, (120%)	44.55 ± 0.11	0.063	0.25
	8	6.4, (80%)	14.38 ± 0.01	0.005	0.13
CPM	8	8, (100%)	15.98 ± 0.06	0.034	0.42
	8	9.6, (120%)	17.59 ± 0.06	0.034	0.38

^∗𝑛=3.