Abreva is an over-the-counter medication used to treat cold sores [1]. Its active ingredient is docosanol 10% [1].
How does Abreva work on cold sores?
Abreva works by penetrating the skin to block the infection caused by the herpes simplex virus (HSV-1), which is the most common cause of cold sores [1][2]. By inhibiting viral entry into healthy cells, it helps to shorten the healing time of cold sores [1].
When should I start using Abreva?
It is most effective when applied at the first sign of a cold sore, such as tingling, itching, or burning [1]. Applying Abreva at this early stage can help to prevent the cold sore from fully developing or reduce its severity and duration [1][3].
How do I apply Abreva?
Abreva should be applied to the affected area five times a day [1]. For optimal results, continue treatment for the duration recommended on the product packaging, typically until the cold sore has healed [1].
What are the risks or side effects of using Abreva?
Common side effects include headache and, rarely, a rash [1]. If a rash or any other allergic reaction occurs, discontinue use and seek medical attention [1]. Abreva is for external use only and should not be used on broken skin or to treat genital herpes [1].
Can Abreva prevent cold sores from returning?
Abreva treats the symptoms of an existing cold sore by shortening the healing time. It does not prevent future outbreaks or cure the herpes simplex virus [1].
What alternatives are there to Abreva for cold sores?
Other treatment options for cold sores include prescription antiviral medications like acyclovir, valacyclovir, and famciclovir, which can be taken orally or applied topically [4]. Some people also find relief through home remedies or other over-the-counter products, though scientific evidence for their efficacy varies [5].
How long does it take for Abreva to heal a cold sore?
When used as directed, Abreva can shorten the healing time of a cold sore [1]. The exact duration of healing can vary, but clinical studies have shown it can reduce healing time by an average of 1.4 days [3].
What is the difference between Abreva and other cold sore treatments?
Abreva is a topical cream with docosanol as its active ingredient, working by blocking viral entry into cells [1]. Prescription antiviral medications, on the other hand, work by inhibiting viral DNA replication [4]. The choice of treatment often depends on the severity of the cold sore, frequency of outbreaks, and individual patient response [4].
Sources:
[1] https://www.abreva.com/
[2] https://www.cdc.gov/std/herpes/default.htm
[3] https://www.abreva.com/about-abreva/how-abreva-works/
[4] https://www.mayoclinic.org/diseases-conditions/cold-sore/diagnosis-treatment/drc-20371022
[5] https://www.healthline.com/health/cold-sore-treatment