Antiviral treatment started at the very first tingle helps most, with cold compresses, lip moisturizer, and pain relievers to keep you comfortable while the sore heals.
Timing changes the answer: antivirals shorten an outbreak best when you start during the tingling or burning stage, before blisters form. Over-the-counter docosanol 10% cream is the only FDA-approved nonprescription antiviral for cold sores, while prescription acyclovir, valacyclovir, or famciclovir taken by mouth works better for large, painful, or frequent outbreaks. Even untreated, sores usually crust and heal in about 1 to 2 weeks, so comfort care counts: cold compresses, petroleum jelly on the crust, and acetaminophen or ibuprofen. Sun exposure, illness, stress, and short sleep set off outbreaks for many people, so daily SPF 30 lip balm and a steady sleep routine reduce how often they return. Talk with a clinician if a sore lasts more than two weeks, returns several times a year, appears near your eye, or you have a weakened immune system or eczema.
What heals cold sores fastest
Common questions
What helps cold sores?
Cold sores heal on their own in about 1 to 2 weeks, but treatment shortens them when you start early. At the first tingle or itch, apply over-the-counter docosanol 10% cream, or take a prescription antiviral such as acyclovir, valacyclovir, or famciclovir. The pills work best within 48 hours of the first sign. For comfort, use a cold compress, petroleum jelly on the crust, and acetaminophen or ibuprofen. Wash your hands, skip sharing drinks, utensils, and lip balm, and use SPF 30 lip balm, since sun is a common trigger. Contact a clinician if sores last past two weeks, come back often, spread toward your eye, or you have a weakened immune system.