Can't find Abreva? Discover the best alternatives for cold sore treatment in 2026, including prescription antivirals and OTC options that really work.
Cold sores don't wait. They show up at the worst possible time — before a job interview, a first date, a family photo. And when you can't find Abreva (Docosanol) at your pharmacy, you need a backup plan fast.
The good news is that several effective alternatives exist, both over-the-counter and by prescription. In this guide, we'll explain what Abreva is, how it works, and walk you through the best alternatives so you can treat your cold sore even when Abreva isn't on the shelf.
If you're still hoping to find Abreva, check out our guide on how to find Abreva in stock near you.
Abreva is the brand name for Docosanol 10% cream, an over-the-counter antiviral medication. It's the only nonprescription cold sore treatment approved by the FDA to shorten healing time. It's manufactured by Haleon and comes as a small 2g tube or pump that typically costs $15 to $35.
Abreva is applied directly to the cold sore on the lips or face, five times a day, until the sore heals. It works best when started at the very first sign of a cold sore — that initial tingle or redness. For full details on usage, see our guide on Abreva uses, dosage, and what you need to know.
Unlike many antiviral medications that attack the virus directly, Docosanol works by blocking the herpes simplex virus from entering healthy skin cells. It stabilizes the cell membrane so the virus can't fuse with it and get inside. No entry means no replication, which means the cold sore heals faster.
This unique mechanism is why some alternatives work differently — they target the virus at different stages of its lifecycle. For a deeper dive, read our explainer on how Abreva works.
Here are the most effective alternatives, ranked by accessibility and evidence:
Type: Over-the-counter
Cost: $16 to $22 for a 2g tube
How it works: Same active ingredient as Abreva — identical mechanism of action
This is your closest alternative because it is Abreva, just without the brand name. Generic Docosanol is available at many pharmacies and online retailers. It may be in stock even when branded Abreva is sold out. Ask your pharmacist specifically for "Docosanol 10% cream."
Type: Prescription oral antiviral
Cost: $15 to $50 for generic; brand name can be higher
How it works: Converts to Acyclovir in the body and stops the virus from making copies of itself
Valacyclovir is one of the most prescribed cold sore treatments. For cold sores, the typical regimen is 2,000mg taken twice in a single day (two doses, 12 hours apart). Many doctors and telehealth services will prescribe it quickly. It's taken by mouth, which means it works systemically — not just at the application site.
Side effects can include headache, nausea, and stomach pain, but most people tolerate it well. Learn more about finding a prescriber in our guide on how to find a doctor for cold sore treatment.
Type: Prescription topical antiviral
Cost: $15 to $30 for generic cream
How it works: Inhibits viral DNA replication, stopping the virus from multiplying
Acyclovir cream is applied to the cold sore 5 times daily for 4 days. It's been a staple cold sore treatment for decades. The generic version is affordable and widely available. Unlike Abreva, it requires a prescription, but telehealth makes getting one fast and convenient.
Acyclovir is also available in oral form for more severe or frequent outbreaks.
Type: Prescription topical antiviral
Cost: $30 to $80+ (limited generic availability)
How it works: Inhibits viral DNA synthesis, reducing viral replication
Penciclovir cream is applied every 2 hours while awake for 4 days. It's effective but requires more frequent application than Abreva or Acyclovir cream. It's a good option if other treatments haven't worked well for you, though it tends to be more expensive.
Type: Over-the-counter supplement
Cost: $5 to $15 for a bottle
How it works: An amino acid that may inhibit the herpes virus by blocking arginine, which the virus needs to replicate
L-Lysine isn't an antiviral medication, and the clinical evidence is mixed. However, many cold sore sufferers report that taking 1,000mg daily helps reduce the frequency and severity of outbreaks. It's inexpensive, widely available, and safe for most people. Consider it a complement to antiviral treatment, not a replacement.
If you decide on a prescription alternative, you don't necessarily need an in-person doctor visit:
For more tips, see our guide on finding a doctor who can help with cold sore treatment.
Abreva (Docosanol) has no known significant drug interactions because it's applied topically and has minimal systemic absorption. Prescription alternatives like Valacyclovir and Acyclovir do interact with certain medications, particularly those that affect kidney function. Always tell your doctor about all medications you're taking. For more details, read our guide on Abreva drug interactions.
Not being able to find Abreva is frustrating, but it doesn't mean you're stuck without treatment. Generic Docosanol, prescription antivirals, and even OTC supplements give you real options. The key is acting fast — cold sore treatments work best when started early.
Start by checking Medfinder for Abreva availability in your area. If it's not in stock, use the alternatives above to get treatment started today.
You focus on staying healthy. We'll handle the rest.
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