Garlic (Allium sativum) | Hypercholesterolaemia | Yes15 | Increased risk of bleeding |
Ginseng (Panax ginseng) | Various | No16 | Increased risk of bleeding |
Ginkgo biloba (Ginkgo biloba) | Dementia | Yes17 | Increased risk of bleeding |
| Intermittent claudication | Yes18 | |
Feverfew (Tanacetum parthenium) | Migraine prevention | Yes19 | Increased risk of bleeding |
Ginger (Kaempferia galanga) | Nausea/vomiting | Yes20 | Increased risk of bleeding |
St John's wort (Hypericum perferatum) | Mild to moderate depression | Yes21 | Increased risk of clotting |