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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.
Vitamins To Treat Cold Sores. Vitamin A. Vitamin A is used widely to treat skin-related problems like wrinkles and acne. It helps in skin renewal and provides faster healing from infections caused due to cold sores.You can get it naturally from food sources such as carrots, sweet potatoes, spinach, lettuce, dried apricots, liver, etc.