What Is Anbesol Cold Sore Therapy? Uses, Dosage, and What You Need to Know in 2026

Anbesol Cold Sore Therapy is an over-the-counter topical ointment designed specifically for the pain and discomfort of cold sores and fever blisters. It's a maximum-strength formulation from Haleon (formerly GlaxoSmithKline Consumer Healthcare) that has been on the market since 2006. Here is everything you need to know about what it is, what it does, and how to use it correctly.

What Is Anbesol Cold Sore Therapy?

Anbesol Cold Sore Therapy is a topical ointment (not a gel, cream, or liquid) that comes in a small tube. It is classified as an OTC drug under FDA's monograph system for topical anesthetics and skin protectants. It does not require a prescription.

The product is sometimes confused with other Anbesol products (like Anbesol Regular Strength or Anbesol Maximum Strength gel), which are formulated for toothaches and mouth pain. Anbesol Cold Sore Therapy is specifically formulated for fever blisters and cold sores on or around the lip — it is a distinct product with its own unique formula.

What Does Anbesol Cold Sore Therapy Treat?

Per its FDA-approved label, Anbesol Cold Sore Therapy is indicated to:

• Temporarily relieve pain associated with fever blisters and cold sores
• Relieve dryness and soften fever blisters and cold sores

Cold sores (also called fever blisters) are caused by herpes simplex virus type 1 (HSV-1). They appear as clusters of small, painful blisters on or around the lips. Anbesol Cold Sore Therapy does not eliminate the virus or prevent recurrence — it manages the symptoms and protects the skin while the outbreak runs its course.

Active Ingredients and What They Do

Anbesol Cold Sore Therapy contains four active ingredients, each with a specific role:

• Benzocaine 20% (fever blister/cold sore treatment): A local anesthetic that blocks sodium channels in nerve endings, preventing pain signals from reaching the brain. This provides fast, temporary numbing of the cold sore and surrounding skin.
• Camphor 3% (fever blister/cold sore treatment): A mild counter-irritant and topical analgesic. It activates cold-sensing receptors in the skin to create a cooling sensation that soothes itching and burning.
• Allantoin 1% (skin protectant): Promotes skin cell renewal (keratinocyte proliferation), softens and soothes irritated skin, and helps the cold sore crust heal without excessive cracking.
• White petrolatum 64.9% (skin protectant): Creates a thick, occlusive barrier over the sore that locks in moisture, prevents the blister from cracking and bleeding, and shields the raw tissue from environmental irritants.

Additional inactive ingredients include vitamin E, aloe barbadensis leaf extract, benzyl alcohol, menthol, and mineral oil — all contributing to a soothing, moisturizing experience.

How to Use Anbesol Cold Sore Therapy: Step-by-Step

1. To open the tube for first use: cut the tip of the tube on the scored mark with scissors.
2. Squeeze a small amount of ointment onto your clean fingertip or an applicator.
3. Apply directly to the cold sore and the area immediately around it.
4. Apply no more than 3 to 4 times daily.
5. Do not use for more than 7 days unless directed by a doctor.

For children: Ages 2–12 may use the product with adult supervision. Do not use in children under 2 years of age.

Dosage Forms and Sizes

Anbesol Cold Sore Therapy is available in two sizes:

• 9g (0.33 oz) tube — the most commonly stocked size at major pharmacy chains
• 7.25g (0.25 oz) tube — slightly smaller; may be found at some retailers

Both are safety-sealed tubes — do not use if the tip was cut prior to you opening the packaging.

How Is It Different from Other Anbesol Products?

The Anbesol brand includes several different products targeting different types of oral and facial pain. Anbesol Cold Sore Therapy is distinct from:

• Anbesol Regular Strength: Benzocaine gel for toothache and gum pain; no petrolatum barrier
• Anbesol Maximum Strength (gel): Higher-concentration benzocaine gel for dental pain; formulated for intraoral use
• Anbesol Baby (liquid/gel): For teething pain (now largely replaced by other products; benzocaine contraindicated for teething)

Always check the label to ensure you have the Cold Sore Therapy version, which contains allantoin and white petrolatum in addition to benzocaine and camphor.

Where to Find Anbesol Cold Sore Therapy

Anbesol Cold Sore Therapy is sold OTC at CVS, Walgreens, Walmart, Target, Kroger, and online retailers including Amazon. If your local pharmacy is out of stock, use medfinder to find which pharmacies near you currently have it. See our full guide: how to find Anbesol Cold Sore Therapy in stock near you.