According to an article in the "Journal of Oral Pathology and Oral Medicine" in 2008, cold sores are caused by the herpes simplex virus. Usually, they're caused by type 1 of this virus and can be identified by a red blister on the skin that oozes and eventually forms a crust. You may be able to get rid of cold sores with vinegar, but you should probably see a doctor if they persist.
Pain Relieving Soak
Vinegar contains some analgesic properties and may be useful in relieving the pain caused by cold sores. According to the American Academy of Family Physicians, shingles sores are caused by a virus similar to herpes simplex and can be treated by soaking them with vinegar. To apply, saturate a cloth in equal parts water and white vinegar and hold onto the sore for about 10 minutes.
Infection-Reducing Supplement
Vinegar may also be able to reduce infection. According to a study published in the "Annals of Nutrition and Metabolism" in 2010, drinking 2 tsp. of vinegar right before a meal helps to stabilize your blood sugar after eating. This can reduce your likelihood of getting an infection, even if you have an open sore like a cold sore.
Contamination Prevention Measure
You may be able to prevent the transmission of cold sores to others by wiping things down with vinegar. According to a study published in "PLoS One" in 2010, sanitizing surfaces with malt vinegar reduced the likelihood of someone catching a virus. If you share a home with someone, it may be best to wipe utensils and glasses with vinegar to prevent contamination of herpes simplex virus type 1.
Caution
Vinegar is highly acidic and can burn the skin on contact. It may especially irritate open sores. If your cold sores are open or oozing, it may be best to skip the vinegar application. Likewise, vinegar can irritate the skin and the mouth, throat, esophagus and stomach if consumed, says "eMedTV," so caution is necessary, especially if you have ulcers.
References
- "Annals of Nutrition and Metabolism"; Examination of the Antiglycemic Properties of Vinegar; Carol S. Johnston, Ph.D., et al; Winter 2010
- "Journal of Oral Pathology and Oral Medicine"; Herpes Simplex Virus Type 1 Infection; Paolo G. Arduino et al.; February 2008
- American Academy of Family Physicians: Shingles; January 2011
- "PLoS One"; Effectiveness of Common Household Cleaning Agents in Reducing the Viability of Human Influenza A/H1N1; Jane S. Greatorex, Ph.D., et al; Feb. 1, 2010
- eMedTV; Apple Cider Vinegar Side Effects"; Kristi Monson, PharmD; November 2007


