The most effective thing you can put on a cold sore is an antiviral treatment, applied as early as possible. Over-the-counter docosanol cream (sold as Abreva) is the only FDA-approved nonprescription antiviral for cold sores, and it shortens healing time by about 18 hours compared to no treatment. Prescription options work faster and more aggressively. Beyond antivirals, several natural remedies and pain-relief products can help you get through an outbreak more comfortably.
Over-the-Counter Antiviral Cream
Docosanol 10% cream is available without a prescription at most pharmacies. In a clinical trial of over 700 patients, those who used docosanol healed in a median of 4.1 days, compared to about 4.8 days with a placebo. That difference matters most when you start applying it during the prodrome stage, the tingling or burning sensation you feel several hours to a day before a blister actually appears. You apply it five times a day until the sore heals.
The earlier you catch it, the better it works. Many people keep a tube in their bag or medicine cabinet so they can start at the first tingle. Once a full blister has formed, docosanol is less effective at shortening the outbreak.
Prescription Antiviral Options
If your cold sores are frequent or severe, a doctor can prescribe stronger treatments. These come in two forms: topical creams and oral pills.
Prescription antiviral cream is applied four to six times a day for up to ten days. It won’t cure the underlying virus, but it can reduce pain and help sores heal faster. The ointment form requires even more frequent application, roughly every three hours during waking hours for seven days.
Oral antiviral pills are generally more effective than creams. A common prescription involves taking a high dose twice in one day, spaced 12 hours apart. That single-day treatment can significantly reduce outbreak severity, but it needs to be started within one day of the first symptoms appearing. For people who get six or more outbreaks a year, doctors sometimes prescribe a daily low dose to suppress the virus and prevent flare-ups altogether.
Honey and Propolis
If you prefer a natural approach, medical-grade honey and propolis (a resinous substance bees make from tree sap) have surprisingly strong clinical evidence behind them. A systematic review and meta-analysis found that propolis healed herpes-related sores significantly faster than prescription antiviral cream. Honey also outperformed it, with complete healing of sores after an average of 8 days compared to 9 days for the prescription treatment. Honey provided similar pain relief as well.
For best results, use raw, unprocessed honey, particularly kanuka or manuka varieties, which have been the focus of most research. Dab a small amount directly onto the sore several times a day. Propolis is available as a lip balm or tincture at health food stores. Neither will interact with antiviral medications, so you can use them alongside other treatments if you want.
Pain-Relief Products
Cold sores can throb, burn, and make eating or drinking miserable. Topical numbing gels containing 4% lidocaine are sold specifically for cold sore pain and can be applied one to three times daily. You’ll also find products with benzocaine at pharmacies, though some people find these slightly more irritating to broken skin.
Ice wrapped in a cloth and held against the sore for a few minutes can dull pain between applications. Ibuprofen or acetaminophen taken by mouth helps with the deeper aching that topical products can’t fully reach.
How to Apply Treatments Correctly
The way you apply cream to a cold sore matters, both for effectiveness and to avoid spreading the virus. Follow these steps:
- Clean and dry the area before applying anything.
- Use a thin layer that covers the entire sore.
- Don’t rub the cream in. Rubbing can push the virus to surrounding skin and worsen the outbreak. Dab or pat gently instead.
- Don’t cover it with a bandage. Cold sores heal faster when exposed to air.
- Wait at least 30 minutes before showering or swimming after application.
- Skip makeup and lip balm on the treated area. Cosmetics can contaminate the product and interfere with healing.
Wash your hands immediately after touching the sore or applying any product. The virus spreads easily to your eyes, fingers, and other people through direct contact. Use a fresh cotton swab rather than your fingertip if you want to minimize contact.
What to Expect During Healing
Cold sores typically resolve within 5 to 15 days, with or without treatment. The timeline follows a predictable pattern: tingling and tightness come first, lasting several hours to a day. Then the blister forms and fills with fluid. After roughly 48 hours, the blister breaks open, oozes, and crusts over into a scab. The scab eventually falls off on its own, and the skin underneath is usually fully healed.
Treatment shortens this timeline and reduces the severity of each stage, but nothing eliminates a cold sore overnight. The biggest gains come from starting treatment during that initial tingling phase, before a visible blister appears. Once you’re past the blister stage, your main goal shifts from shortening the outbreak to managing pain and preventing the virus from spreading.
Protecting Your Eyes
One complication worth knowing about: the same virus that causes cold sores can infect your eyes, a condition called ocular herpes. This is serious and can cause vision loss if untreated. Symptoms include eye pain, redness, light sensitivity, watery eyes, and a feeling like something is stuck in your eye. If you develop any eye symptoms during or shortly after a cold sore outbreak, especially on one side of your face, get medical attention quickly. This is one of the main reasons hand hygiene during an outbreak is so important. Touching a cold sore and then rubbing your eye is the most common way the virus reaches the eye.