Milk does a body good in a lot of ways, thanks in large part to its bone-strengthening calcium content. But milk also has healing properties that may help banish cold sores from your pain-stricken lips. And to get the benefits, you don't even have to drink it.
Milk contains immunoglobulins, or antibodies, that can destroy viruses. An amino acid called L-lysine may help put the brakes on the acids that the herpes virus relies on to replicate itself. There are plenty of other foods that have high L-lysine content that you can use to combat cold sores, but milk tends to be one of the handiest. Others include some cheeses, eggs, black beans, pistachios and many more tasty treats.
Soak a cotton ball in ice- cold whole milk and apply it to the sore to relieve pain. After a few minutes, you can apply a generous dollop of petroleum jelly to help keep some of that virus-fighting goodness on your lips throughout the day.
Better yet, if you feel the tell-tale tingling before the cold sore surfaces, go straight to the cold milk. It can help speed the healing right from the beginning.