Cold Sore FAQs

Can Campho-Phenique be used internally (oral or vaginal)?

No. It should only be used externally.

Can I use Campho-Phenique inside my mouth?

Campho-Phenique is for external use only.

What formulas are available? What are they used for?

Campho-Phenique Cold Sore Treatment helps prevent secondary infection or spreading of an infection, to ultimately help promote healing. Maximum strength formula relieves pain and itching on contact. Start using at the first sign of a cold sore and before the scab. For temporary relief; stop use and see your doctor if symptoms persist for more than 7 days.

What is an antiseptic?

An antiseptic is a chemical which kills or inhibits the growth of micro-organisms.
Some additional examples of antiseptics include antiseptic soap, iodine, betadine and hydrogen peroxide

Why is there phenol in Campho-Phenique?

Phenol temporarily inactivates the pain signals at the nerve endings in the skin, providing a local anesthetic or numbing effect. It also has antiseptic properties.

Why do Campho-Phenique liquid and gel contain eucalyptus oil?

This ingredient is present to produce a pleasant odor.

Are there any animal by-products in Campho-Phenique?


How do I apply the product? Do I use with a bandage?

These directions apply to adults and children 2 or older. For children under 2, consult
your doctor before using.
Cold Sore Treatment – Clean the affected area. Apply directly to cold sore or fever blister 1 – 3 times daily. Do not bandage.

What is the history of Campho-Phenique?

1884 Campho-Phenique Liquid is introduced.
1944 Campho-Phenique Liquid is purchased by Sterling Drug.
1945 Campho-Phenique is repositioned as a first aid antiseptic.
1979 Campho-Phenique Gel is formulated as a first aid product.
1984 Campho-Phenique Gel is repositioned as a cold sore remedy.
2003 Campho-Phenique Cold Sore Treatment for Scab Relief is launched.
2016 Campho-Phenique is purchased by Foundation Consumer Healthcare.

What is the history of the ingredient phenol?

In 1867 Joseph Lister demonstrated that phenol cleansing of patients’ skin before and
after surgery could greatly reduce infections.