Onion gargles or "onion teas" were often used to cure sore throats, be they of the bacterial or viral origin. Onions are high in sulphur, a natural component of sulfa antibiotics, and garlic in addition to being a good antiseptic against both viruses and bacteria, has proved to help boost the immune system and lower cholesterol.
yellow onion, chopped
water to cover
apple cider vinegar
1Chop onions and garlic and place in a pan.
2Cover with 16 ounces of water and simmer over a low heat for 30 minutes.
3Take off heat and strain, reserving liquid.
4Add salt, honey, lemon juice and cider vinegar. Gargle with about 2 tablespoons every 30 minutes.