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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.
Part 1 Preventing Cold Sores. 1. Avoid cold sore triggers. There are a variety of things that can cause cold sores and it's a good idea to be extra vigilant during cold season. Even stress and lack of sleep can cause cold sores, so try to get a good night's sleep. If you come down with a cold, fever or flu, your risk of an outbreak may increase, as I mentioned, because your immune system is compromised. Make sure you're getting all your necessary vitamins, and plenty of them.