Garlic as Antiseptic Medicine — The Bulb That Fights Infection from the Inside Out

Garlic (Allium sativum) is one of the most powerful natural antimicrobials known. It has been used as medicine since the earliest civilisations — clay tablets from Sumeria (c. 2600 BCE) prescribe garlic for various ailments, the builders of the Egyptian pyramids ate it daily to prevent illness, and Hippocrates prescribed it for infections, wounds, and digestive complaints. During both World Wars, garlic was used as an antiseptic wound dressing when conventional antibiotics were scarce — the Russian army used it so extensively that it became known as 'Russian penicillin'. The primary antimicrobial compound is allicin, which does not exist in intact garlic cloves. When a garlic clove is crushed, chopped, or chewed, the enzyme alliinase converts the stable precursor alliin into allicin — a highly reactive sulfur compound that destroys bacteria, fungi, and some viruses by disrupting their enzyme systems. This is why crushed garlic is medicinally active but whole, unbroken cloves are not. Allicin is unstable and begins to degrade within minutes of formation, which is why fresh-crushed garlic is far more potent than aged or cooked garlic. Garlic also lowers blood pressure, reduces cholesterol, and has demonstrated anti-cancer properties in epidemiological studies.