Spectrophotometric Determination of Zolmitriptan in Bulk Drug and Pharmaceuticals Using Vanillin as a Reagent

Table 5

Results of recovery study by standard addition method.

Tablets studied	ZMT in tablets, μg mL^−1	Pure ZMT added, μg mL^−1	Total found, μg mL^−1	Pure ZMT recovered*, percent ± SD
Zomig-2.5	19.84	10.0	30.01	101.7 ± 0.82
	19.84	20.0	40.13	101.4 ± 1.12
	19.84	30.0	50.52	102.3 ± 1.45

*Mean value of three determinations.