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L-Lysine for Cold Sores

Q. You recently mentioned the value of l-lysine for dealing with cold sores. I have struggled with cold sores and fever blisters for over 50 years.

About 20 years ago, I first tried l-lysine. I’ve found that taking 1000 mg twice a day at the first sign of a “tingle” stops the cold sore immediately.

If I miss that signal and a blister forms, taking l-lysine makes the blister disappear within a few days: no scabs, no inflammation. My brother has had similar good results with l-lysine.

A. Like you, many people who suffer from recurrent cold sores report that the amino acid l-lysine can be useful in shortening the attack. Despite such testimonials, however, there is a surprising lack of recent clinical trials supporting the use of l-lysine.

Older studies were inconclusive. Without better research it is hard to say whether this natural product is really better than placebo. On the other hand, l-lysine appears safe.

11/20/17 redirected to: https://www.peoplespharmacy.com/articles/can-you-prevent-cold-sores-by-avoiding-cashews/

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About the Author
Joe Graedon is a pharmacologist who has dedicated his career to making drug information understandable to consumers. His best-selling book, The People’s Pharmacy, was published in 1976 and led to a syndicated newspaper column, syndicated public radio show and web site. In 2006, Long Island University awarded him an honorary doctorate as “one of the country's leading drug experts for the consumer.”.
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