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Table 5 Amount in mg of amoxicillin in the tested weighed pill

From: Are antibiotics substandard in Lebanon? Quantification of active pharmaceutical ingredients between brand and generics of selected antibiotics

Medicine

Mass of unknown sample

Mass of amoxicillin per pill

Mean amount of amoxicillin (in mg)

SD(a)

RSD(b) (%)

Relative deviation© (%)

USP requirement

Drug1.1

1478.1

986.3631

969.46

15.39

1.58

10.79

90–120%

Drug1.2

1451.1

965.7939

Drug1.3

1471.8

956.2252

Drug2.1

1477.9

969.4269

983.60

12.97

1.31

12.41

90–120%

Drug2.2

1544.8

986.4853

Drug2.3

1548.8

994.8977

Drug3.1

1463.0

926.9293

952.01

28.73

3.01

8.80

90–120%

Drug3.2

1459.1

945.758

Drug3.3

1474.1

983.3707

Drug4.1

1501.6

1001.293

1003.43

6.30

0.62

14.67

90–120%

Drug4.2

1501.3

998.4876

Drug4.3

1512.2

1010.529

Drug5.1

1513.3

978.5518

985.95

6.49

0.65

12.68

90–120%

Drug5.2

1519

990.6797

Drug5.3

1532.6

988.6453

  1. a: SD = \( \sqrt{\frac{\sum \left(x-\overline{x}\right)}{n}} \) b: RSD = \( \frac{SD\ }{\overline{X}}\times 100 \) c: RD = \( \frac{experimental- expected}{expected} \)