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L-lysine has a well-established mechanism for cold sore support: the herpes simplex virus requires arginine — another amino acid — to replicate. Lysine and arginine compete for the same cellular transport channels, meaning that elevated lysine levels suppress arginine availability and impair viral replication. Multiple clinical trials have demonstrated that regular lysine supplementation reduces both the frequency and severity of cold sore outbreaks. Quantum Health's liquid format delivers high-potency lysine in a rapidly absorbed form alongside complementary immune-supportive ingredients.
2 fl oz liquid extract. From Quantum Health — natural cold sore and immune support specialists.
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