Contact Us

If you have questions, Please contact us by phone or e-mail.

Hours: 9:00 AM - 8:00 PM (Eastern Time)

Phone Icon Call Customer Support:
(866) 897-5002
Email Icon Email Customer Support:

Important Safety Information

Denavir should only be used on herpes labialis on the lips or face. Application to mucous membranes is not recommended. Denavir should not be used in patients with known hypersensitivity to the product or any of its ingredients.

There are no adequate and well-controlled Denavir studies in pregnant women; therefore, Denavir should be used during pregnancy only if clearly needed. There is no information on whether Denavir is excreted in human milk after topical administration; a decision whether to discontinue Denavir should take into account the importance of the drug to the mother. The effect of Denavir has not been established in immunocompromised patients. Denavir does not cure cold sores.

In clinical studies, the most common adverse reaction with Denavir was headache, which occurred in 5.3% of patients who received Denavir and 5.8% of patients who received placebo. Other adverse reactions with Denavir occurred in less than 2% of patients and included application site reaction, decreased sensitivity to touch/local anesthesia, taste perversion, and rash.

Other reported adverse reactions have included swelling of the mouth or throat, pain, alterations in sense of smell, abnormal touch sensation, itching, skin discoloration, and hives.

Denavir is available by prescription only. Please see the Full Prescribing Information.

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit, or call


DENAVIR is a nucleoside analog HSV DNA polymerase inhibitor indicated for the treatment of recurrent herpes labialis (cold sores) in adults and children 12 years of age and older.