Docosanol: uses, dosing, side effects & brands
Docosanol is a medicine sold in the U.S. under one brand, for blister. Below: what the FDA label says, every product that contains it, what the pills look like, and its recall record.
Key facts
- Treats
- Blister
- Available as
- Topical
- Sold as
- Abreva
- Prescription?
- Over the counter
- Generic available?
- Not in our catalog
- What the pharmacy pays
- about $7 per gm — not your price
How docosanol is dosed
From the FDA label for Abreva (application NDA020941). Other docosanol products — different forms, different strengths — are dosed differently. Follow the label for the one you were prescribed.
Directions adults and children 12 years or over : wash hands before and after applying cream apply to affected area on face or lips at the first sign of cold sore/fever blister (tingle) early treatment ensures the best results rub in gently but completely use 5 times a day until healed children under 12 years : ask a doctor
Every docosanol product we track (1)
Same active ingredient — different manufacturer, form, price and FDA recall record. That last one is what our independent score measures.
Only one: Abreva.
How long docosanol keeps
No docosanol label we read sets a separate limit for after opening, but they do specify how it must be stored — and the stability behind any date assumes those conditions.
Does docosanol expire? The in-use limits and storage rules from its labelsWhat people report to the FDA about docosanol
The FDA Adverse Event Reporting System (FAERS) collects reports from patients and clinicians. It holds 650 reports naming docosanol, and the FDA flagged 6% of those reports as serious. The effects reported most often — leaving out reports about overdose, misuse or the condition being treated, which dominate the raw list for common medicines:
- oral herpes33 reports
- incorrect product administration duration26 reports
- drug effective for unapproved indication25 reports
- lip swelling18 reports
- drug effect less than expected17 reports
- therapeutic product effect delayed13 reports
- product complaint12 reports
- therapeutic product effect incomplete12 reports
Read these as a signal, not a rate. A report does not mean docosanol caused the effect — anyone can file one, and many describe people taking several medicines for several conditions. Crucially there is no denominator: FAERS does not record how many people took the drug, so these counts cannot be turned into “X% of patients” — a bigger number often just means a more widely used or more talked-about drug. Duplicates exist, and publicity drives reporting. For what is actually established, read the FDA label section above.
Source: openFDA drug/event (FAERS), retrieved July 25, 2026.
Related calculators
Frequently asked questions
What is docosanol?
Uses treats cold sores/fever blisters on the face or lips shortens healing time and duration of symptoms: tingling, pain, burning, and/or itching
Can you take docosanol with other medicines?
It depends on the medicine. We check it against the FDA labels rather than guessing: our interaction checker searches each drug's own label for the other and quotes what it says, naming the section it came from. Run docosanol against whatever else you take — and remember that a label not naming a drug is not the same as that combination being safe.
What forms does docosanol come in?
Across the brands we track, docosanol is currently marketed as topical, per the FDA's National Drug Code Directory. Each form is dosed differently — follow the label for the exact product you were prescribed.
Is there a generic docosanol?
We do not currently list a generic-labelled docosanol product. That does not always mean none exists — it means none appears under a generic name in the FDA data we track. Ask your pharmacist.
Cite this page
- APA
- pharmaranks. (2026, July 24). Docosanol: uses, dosing, side effects & brands. https://pharmaranks.com/drugs/docosanol
- MLA
- “Docosanol: uses, dosing, side effects & brands.” pharmaranks, 24 July 2026, https://pharmaranks.com/drugs/docosanol.
We summarise public FDA and NIH sources — for a clinical claim, cite the primary source we link to as well.
Sources: FDA openFDA drug label, National Drug Code Directory, and Enforcement (recall) database. This page reproduces public FDA data and is not medical advice. Dosing is set by your prescriber.
Read the full FDA label for docosanol on DailyMed (NIH) ↗.