The sulfur compounds and specifically the allisini substance are the active ingredients of garlic. Available data reveal that garlic has been used for about 5,000 years, while for 3,000 years it has been used in China in the field of medicine. Historically, garlic has been used throughout the world to address a multitude of ailments, including hypertension, infections and cholesterol. It has been suggested that patients who take blood-thinning medications must show caution when consuming garlic, as it may display anticoagulant properties.