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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

MedicineMass of unknown sampleMass of amoxicillin per pillMean amount of amoxicillin (in mg)SD(a)RSD(b) (%)Relative deviation© (%)USP requirement
Drug1.11478.1986.3631969.4615.391.5810.7990–120%
Drug1.21451.1965.7939
Drug1.31471.8956.2252
Drug2.11477.9969.4269983.6012.971.3112.4190–120%
Drug2.21544.8986.4853
Drug2.31548.8994.8977
Drug3.11463.0926.9293952.0128.733.018.8090–120%
Drug3.21459.1945.758
Drug3.31474.1983.3707
Drug4.11501.61001.2931003.436.300.6214.6790–120%
Drug4.21501.3998.4876
Drug4.31512.21010.529
Drug5.11513.3978.5518985.956.490.6512.6890–120%
Drug5.21519990.6797
Drug5.31532.6988.6453
  1. a: SD = \( \sqrt{\frac{\sum \left(x-\overline{x}\right)}{n}} \) b: RSD = \( \frac{SD\ }{\overline{X}}\times 100 \) c: RD = \( \frac{experimental- expected}{expected} \)