Development and Validation of First-Order Derivative Spectrophotometry for Simultaneous Determination of Levocetirizine Dihydrochloride and Phenylephrine Hydrochloride in Pharmaceutical Dosage Form

Table 6

Assay results of marketed formulations.

Formulation	Drug	Labeled; claim; (mg)	Amount found per tablet; (mg)	% Label; Claim ± S.D.
Levocet-D^+	LCT	5	4.98	99.66±0.808
	PHE	10	9.96	99.66±0.950
Rinostat-L	LCT	5	4.98	99.63±1.266
	PHE	10	10.03	100.3±0.9