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L-lysine in bottle from


A trusted, over the counter cold sore treatment

Tired of ineffective cold sore home remedies? In certain individuals, high Lysine blood levels may help prevent the Cold Sore virus from replicating, while reducing the duration and severity of outbreaks.*


Cold Sores, or HSV-1, are caused by the Herpes Simplex Virus, which is known to hide in the spine. During times of stress or when the immune system is compromised, the herpes virus may cause an outbreak, resulting in one or more cold sores. Cold sores cause mild discomfort to severe physical pain. While few over the counter herpes treatments work, Lysine (especially as a combination therapy) has been linked to a reduction in Cold Sore symptoms.

Read more about Cold Sores

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

The essentials

-- Reviews


Cold sores are common. But outbreaks decrease in intensity and duration with antiviral medication. We prescribe FDA approved meds based on the frequency and severity of symptoms.

-Dr Mary Clifton

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