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Garlic Side Effects, Interactions and Warnings

People allergic to garlic may develop a rash from touching or eating the herb

Consult your practitioner before using garlic if you are pregnant

Can inhibit blood clotting. If you have a blood-clotting disorder, consult an herbalist or a licensed healthcare professional

Avoid large amounts of garlic if you are taking aspirin or other drugs that thin the blood.

Produces bad breath, heartburn, and flatulence

Garlic is thought to function as an adjunct treatment for cardiovascular disease. Consult your practitioner before using it in this capacity

Eating 10 or more raw garlic cloves a day can be toxic and in some cases can trigger an allergic reaction.

Do not take if you are breast-feeding because it can pass into the breast-milk and cause colic in infants.

Garlic reinforces warfarin action by heterogeneous mechanisms. It should thus not be used in patients on oral anticoagulant and/or antiplatelet therapy.
- Oral anticoagulants and medicinal plants. An emerging interaction -- Argento A, Tiraferri E, Marzaloni M. -- Ann Ital Med Int. 2000 Apr;15(2):139-43.

Garlic may increase the risk of bleeding or potentiate the effects of warfarin therapy.
- Am J Health Syst Pharm 2000 Jul 1;57(13):1221-7; quiz 1228-30 -- Potential interactions between alternative therapies and warfarin. -- Heck AM, DeWitt BA, Lukes AL.

Changes pharmacokinetic variables of paracetamol, decreases blood concentrations of warfarin and produces hypoglycaemia when taken with chlorpropamide.
- Drugs 2001;61(15):2163-75 -- Interactions between herbal medicines and prescribed drugs: a systematic review. -- Izzo AA, Ernst E.

This information is not intended to be a substitute for professional medical advice. You should not use this material to diagnose or treat a health condition or disease without consulting with your healthcare provider.
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