Table 6: Assay of tablets by standard addition method.

Authentic drugDosage formClaimed taken (µg/mL)Authentic added (µg/mL)Found concentration (µg/mL)% Recovery SD*C.V

CTZEpirizine tablets 1.18
2 1.09
0.65

EBSEvastine tablets 1.14
2 1.53
1.58

FXDAllerfen tablets 1.31
2 1.18
0.90

KETZaditen tablets 1.44
2 1.09
1.45

LORMosedine tablets 1.63
2 1.25
1.11

Average of six replicates.