Docosanol topical (for the skin) is used to treat cold sores on the face and lips.

Docosanol may also be used for purposes not listed in this medication guide.

Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

Use exactly as directed on the label, or as prescribed by your doctor.

Do not take by mouth. Topical medicine is for use only on the skin. Rinse with water if this medicine gets in your eyes or mouth.

Apply this medicine at the first sign of a cold sore, such as tingling, redness, itching, or a blister.

Wash your hands before and after applying docosanol topical.

Remove any cosmetics before applying docosanol topical. Apply enough medicine to completely cover the cold sore. Rub in gently and completely.

Call your doctor if your symptoms do not improve within 10 days, or if they get worse.

Store at room temperature away from moisture and heat. Do not freeze.

Usual Adult Dose for Herpes Simplex:

Apply to affected area on face or lips 5 times a day beginning at the first sign of cold sore or fever blister (i.e., tingling)

Use: For the treatment of cold sores or fever blisters on the face or lips

Usual Pediatric Dose for Herpes Simplex:

12 years or older: Apply to affected area on face or lips 5 times a day beginning at the first sign of cold sore or fever blister (i.e., tingling)

Use: For the treatment of cold sores or fever blisters on the face or lips

You should not use docosanol topical if you are allergic to it.

Ask a doctor before using docosanol topical if you are pregnant or breastfeeding.

Do not use this medicine on a child younger than 12 years old without medical advice.

Apply the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not apply two doses at one time.

An overdose of docosanol is not expected to be dangerous. Seek emergency medical attention or call the Poison Help line at 1-800-222-1222 if anyone has accidentally swallowed the medication.

Do not share docosanol topical with another person, even if they have the same symptoms you have. Sharing this medicine may spread the infection.

Avoid getting this medicine in your eyes or mouth.

Get emergency medical help if you have signs of an allergic reaction: hives; feeling light-headed; wheezing, difficult breathing; swelling of your face, lips, tongue, or throat.

Less serious side effects may be more likely, and you may have none at all.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.