There is no single herb that can kill all infections in the body; however, herbs like garlic, ginger, and oregano have all been known to have antibacterial, antifungal, antiviral, and anti-inflammatory properties, making them useful for treating a wide range of infections. Garlic, for example, is high in allicin, a compound that has been shown to be effective against bacteria, fungi, and viruses. Ginger has anti-inflammatory compounds that can reduce swelling and pain caused by infections. Oregano is high in carvacrol, a compound that has proven to be effective against bacteria, fungi, and some parasites. In addition to these herbs, other plant-based remedies such as turmeric, cinnamon, echinacea, and licorice may help to boost the immune system, thereby helping to prevent infections from taking hold in the body.