- Do not use garlic if you have inflammation of the stomach (gastroenteritis).
- Do not take large amounts of garlic during pregnancy; in large amounts, garlic may stimulate uterine contractions and secretions (Farnsworth et al 1975).
- Do not use garlic while nursing.
Side effects: At the recommended doses, there are no known adverse effects of garlic use. Rarely, and only after frequent contact with the plant, an inflammatory condition of the skin (eczema) or other allergic reactions may develop.
Drug interactions: There are no known interactions of garlic with any drugs.