(a) By HPTLC

 

     Drugs

Label claim

mg tablet-1

For HPTLC (n= 6)

Drug content

(%) ± SD

RSD (%)

Levocetirizine

        5

99.72 ± 0.97

0.98

Montelukast sodium

       10

100.19 ± 1.06

1.06

(b) By HPLC

    Drugs

 Label claim

mg tablet-1

          For HPLC (n= 6)

Drug content

(%)  ±  SD 

      RSD(%)

Levocetirizine

 5

 99.76± 0.55

       0.56

Montelukast sodium

10

100.15 ± 0.71

       0.71

Table 5: Analysis of a marketed formulation (Assay)