Betahistine dihydrochloride

Etilefrine hydrochloride

Taken (μg/ml )

Recovery %

Taken (μg/ml )

Recovery %

0.25
0.5
1
2
3
4
5
6
7

100.93
100.93
101.87
100.00
100.93
100.00
99.44
99.69
100.80

3
5
7
9
11
13

99.04
100.58
100.00
101.45
99.47
100.22

Mean*                          100.51
( p = 0.05)
N                                           9
S.D.                                  0.776
R.S.D.                              0.772
V                                      0.602
S.E.                                  0.259

100.13

6
0.848
0.847
0.719
0.283