Table 3.
INAA elemental analytical results of authentic Viagra®.
| Na (%) | Ca (%) | Br (μg/g) | La (μg/g) | Cl (μg/g) | |
|---|---|---|---|---|---|
| Viagra Pfizer 25 A | 0.26 | 1.1 | 0.40 | 0.17 | 94 |
| Viagra Pfizer 25 B | 0.27 | 1.2 | 0.52 | 0.18 | 98 |
| Viagra Pfizer 25 C | 0.27 | 1.4 | 0.48 | 0.20 | 102 |
| Viagra Pfizer 25 D | 0.26 | 1.3 | 0.38 | 0.14 | 90 |
| Viagra Pfizer 25 E | 0.27 | 1.4 | 0.48 | 0.21 | 107 |
| Viagra Pfizer 25 F | 0.27 | 1.3 | 0.37 | 0.22 | 94 |
| Viagra Pfizer 25 G | 0.28 | 1.3 | 0.41 | 0.19 | 100 |
| Viagra Pfizer 25 H | 0.28 | 1.4 | 0.50 | 0.20 | 106 |
| Viagra Pfizer 25 I | 0.28 | 1.1 | 0.50 | 0.18 | 105 |
| Arithmetic mean | 0.27 | 1.3 | 0.45 | 0.19 | 99.6 |
| Standard deviation | 0.01 | 0.1 | 0.06 | 0.02 | 6.0 |
| CV% | 2.88 | 9.4 | 13.0 | 12.7 | 6.0 |