canker sore cream

Most of these topical cold sore creams use docosanol as the primary active ingredient, commonly at a 10% concentration. Some pain‑relief or variant formulations also list additional ingredients such as lidocaine (a topical numbing agent) and glycerin (a humectant).

Product directions advise applying the cream five times per day until the sore is fully healed, with a maximum recommended duration of 10 days.