Common side effects are often associated with stomach upset. Individuals may be experience breath and body odor, a burning feeling in the mouth or throat, heartburn, gas, nausea and vomiting. Garlic can also increase the risk of bleeding so caution should be used when starting garlic in patients on blood thinners such as Coumadin (warfarin) and antiplatelet drugs such as Plavix (clopidogrel) and aspirin.
In addition to interactions with blood thinners and antiplatelet medications, garlic should be avoided in patients taking isoniazid which is used to treat tuberculosis. It should also be avoided with certain HIV/AIDs medications including Sustiva (efavirenz), Rescriptor (delavirdine), Viramune (nevirapine) and Invirase (saquinavir). Some evidence also suggests that garlic supplements can decrease the effectiveness of cyclosporine and birth control. These drug interactions are not usually a problem with the amount of garlic found in the average individual’s diet but they do become problematic when being taken on a daily basis at the concentrations found in these supplements.
By Sarah Livings