Simply put, Abreva works faster to shorten cold sore healing time. Abreva reduces the duration of pain, burning, itching or tingling. In fact, median healing time of a cold sore with Abreva is 4.1 days used at the first sign, whereas if left untreated, a cold sore can last approximately 8-10 days. Abreva cream comes in a tube or pump and uses the same formula. Of course to be sure Abreva is right for you, always read and follow the label or ask your doctor or pharmacist.