Cayenne pepper has a high vitamin C content making it a natural choice for a cold, as well as vitamin A, B, calcium and potassium. Cayenne also increases the circulation in the body. You may take in capsule form taking 2 – 40,000 heat units (950mg), or liquid 4 drops of the 200,000 heat units. Place a few drops in water and gargle with it every 15-30 minutes to make a sore throat disappear.