Yes, it has been proven, sage can kill... GERMS. Experts recently discovered that the herb can eliminate 65 types of common germs. It has a potent antioxidant that acts as a natural antibiotic to soothe the pain and inflammation of a sore throat. Here's what you should do: Simmer 2 tbsp of dried sage in 8 oz of water for 10 minutes. Salt will help ease swelling so stir in 1/4 tsp and let cool. For 30 seconds, gargle with the solution three times daily at the first sign of infection.