Normally3to5 days: Viral sore throat or common canker sores take about 3to5 days to go away by itself.
Answered 11/15/2013
4.7k views
5 doctors weighed in across 2 answers
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question