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Many folks eat high lysine foods prior to or during a cold sore event, and avoid high arginine foods. For many folks, healing cold sores fast has been as simple as taking 1,000 milligrams to 3,000 milligrams of lysine in capsule supplements during an outbreak. High lysine foods to eat are most meats and dairy products.
Cold Sores. There is no cure for cold sores, nor is there a cure for the herpes simplex virus (HSV) that causes them. Most cold sores will go away on their own. But medicines may slightly reduce the duration of cold sores and sometimes prevent a future outbreak. Treatment with medicines depends on whether you are having a first outbreak or a recurrent outbreak or are trying to prevent future outbreaks.