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Cold Sore Shieldcoldsoreshield.com · Low evidenceCold Sore Shield is a daily supplement that combines L-Lysine with zinc, selenium, quercetin, R-alpha lipoic acid, and vitamin C to proactively prevent cold sore outbreaks. It targets the root triggers of HSV-1 reactivation, including L-arginine excess, weakened immunity, oxidative stress, and cellular vulnerability.
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