Why is garlic useful?

Garlic's health benefits and medicinal properties have long been known (1). Garlic has long been considered a herbal "wonder drug", with a reputation in folklore for preventing everything from the common cold and flu to the Plague! It has been used extensively in herbal medicine (phytotherapy, sometimes spelt phitotherapy). Raw garlic is used by some to treat the symptoms of acne and there is some evidence that it can assist in managing high cholesterol levels. It can even be effective as a natural mosquito repellent.*Edit*Plus it helps keep vampires away.