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

Table 1

Assay of formulation.

Formulation	Drug	Label claim	Amount found, (mg) AM ± SD*	% Assay	% RSD
Coscodin	CP	10 mg	10.01 ± 0.05	100.1	0.55
	CPM	4 mg	3.99 ± 0.006	99.75	0.16
Mit’s Linctus Codeinae Co.	CP	10 mg	10.05 ± 0.05	100.5	0.53
	CPM	4 mg	4.11 ± 0.006	102.75	0.16

^∗𝑛=6.