Table 3.
Pharmacists' knowledge about the side effects, contraindications, and drug-herb interactions of selected herbal medicines (n=233).
| Side effects, contraindications, and drug-herb interactions | Cochrans test | Total P value | ||
|---|---|---|---|---|
| Statement | % of correct answer | % of incorrect answer | ||
| Ginkgo can increase the risk of bleeding when combined with warfarin | 95.3 (222) | 4.7 (11) | X2= 307.356 | <0.05∗ and 0.001∗∗ |
| St John's wort may increase blood digoxin level | 21.5 (50) | 78.5 (183) | ||
| Valerian should be used cautiously in patients using benzodiazepines | 82.8 (193) | 17.2 (40) | ||
| Maca- root should be avoided in patients with goiter | 77.3 (180) | 22.7 (53) | ||
| Ginseng may increase blood pressure | 88.8 (207) | 11.2 (26) | ||
∗p<0.05, ∗∗p <0.001.