Abreva is an over-the-counter topical treatment for cold sores [1]. It contains the active ingredient docosanol, which is believed to work by blocking the spread of the herpes simplex virus [1][2].
How quickly does Abreva work for cold sores?
Abreva can shorten the healing time of cold sores. Clinical studies have shown that it can reduce healing time by an average of 0.7 days when used at the first sign of a cold sore [1]. It is most effective when applied at the earliest symptoms, such as tingling, itching, or burning [3].
What are the ingredients in Abreva?
The active ingredient in Abreva is docosanol 10% [1]. Inactive ingredients include benzyl alcohol, emulsifying wax, light mineral oil, polyoxy 10 stearyl ether, propylene glycol, purified water, and stearyl alcohol [1].
How should Abreva be applied?
Abreva should be applied to the affected area at the first sign of a tingle, itch, or sore [3]. It is typically applied five times a day until the sore is healed [3]. For best results, patients should wash their hands before and after application [3].
Are there any side effects of using Abreva?
Common side effects of Abreva can include headache and application site reactions like burning or stinging [1]. Less common side effects may involve redness or swelling at the application site [1].
How does Abreva compare to other cold sore treatments?
Abreva's active ingredient, docosanol, works differently than some other cold sore treatments that may contain antiviral medications like acyclovir or penciclovir, which are typically available by prescription [4]. Docosanol is thought to inhibit viral entry into cells, while prescription antivirals directly interfere with viral DNA replication [4].
Where can I buy Abreva and how much does it cost?
Abreva is widely available without a prescription at most drugstores, supermarkets, and online retailers [5]. Pricing can vary depending on the retailer and product size, but it generally costs between $15 and $25 for a standard tube [5].
What is the science behind docosanol in Abreva?
Docosanol is a long-chain fatty alcohol that has been shown to inhibit the fusion of the herpes simplex virus to the host cell membrane [2]. By preventing this fusion, docosanol is thought to block the virus from entering the cell and replicating [2].
Can Abreva be used for other skin conditions?
Abreva is specifically indicated for the treatment of cold sores caused by the herpes simplex virus [1]. It is not intended for use on other types of sores or skin infections [1].