Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Apple Cider Vinegar (ACV) is used by some people as a home remedy for cold sores, primarily based on traditional or anecdotal practices. The rationale is often linked to its perceived antiviral, antibacterial, and drying properties. Historically, vinegar has been used as a topical antiseptic, and ACV, in particular, is popular in folk remedies for various skin conditions, including cold sores. However, there is no robust scientific evidence or clinical trials demonstrating that ACV is effective at treating or shortening the duration of cold sores, which are caused by the herpes simplex virus.

While laboratory studies have shown that acetic acid (the main component in vinegar) can inactivate some viruses and bacteria on surfaces or in vitro, these results do not directly translate to effectiveness or safety for treating viral skin lesions. Most documented uses are anecdotal, and medical professionals typically warn against applying undiluted ACV to cold sores due to the risk of skin irritation, chemical burns, or worsening of the lesion.

In summary, the use of apple cider vinegar for cold sores is rooted in traditional home remedy practices, with minimal scientific support. The evidence rating is low due to the lack of controlled studies and the potential for harm when used topically on sensitive skin lesions.

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