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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.
Vitamin B6. Vitamin B6 is also very useful in the treatment of cold sores. It helps to strengthen your immune system by producing antibodies which can fight infections like cold sores and provide quicker healing if you are suffering from cold sores.