How are canker sores treated?

Pain from a canker sore generally lessens in a few days and the sores usually heal without treatment in about a week or two. Simple over-the-counter products, such as Kank-A®, Zilactin® or Orajel®, can be taken to ease symptoms.

Sores that are large, painful, or don’t heal before new ones appear may be treated with a prescription antibacterial mouth rinse, a corticosteroid ointment or a prescription or nonprescription solution to reduce the pain and irritation.

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