Name: Abreva

What happens if I overdose?

An overdose of this medication is not likely to occur. If you suspect an overdose or ingestion of docosanol topical, call an emergency room or poison control center for advice.


Saturated aliphatic alcohol with antiviral activity against various Herpesviridae, including herpes simplex virus type 1 (HSV-1).2 3 5 7 11 13

What do I need to tell my doctor BEFORE I take Abreva?

  • If you have an allergy to docosanol or any other part of Abreva (docosanol).
  • If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.

This medicine may interact with other drugs or health problems.

Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take this medicine with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some other side effects of Abreva?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if you have any side effects that bother you or do not go away.

These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.

You may report side effects to the FDA at 1-800-FDA-1088. You may also report side effects at http://www.fda.gov/medwatch.


Docosanol is used to treat "cold sores/fever blisters" (herpes labialis). It can speed up healing of the sores and decrease symptoms (such as tingling, pain, burning, itching). It works by blocking the virus that causes the cold sores (herpes simplex) from entering the healthy skin cells and growing in number. This medication does not cure herpes and does not prevent passing the infection to someone else. It does not prevent a future occurrence.Do not use this medication to treat canker sores (sores found commonly in the mouth), shingles, or genital herpes.

Abreva Dosage

Use Abreva 5 times a day until cold sore/fever blister is healed.

Other Requirements

  • Keep this and all medicines out of reach of children.
  • Store at room temperature.

Renal Dose Adjustments

Data not available


Consult WARNINGS section for additional precautions.