How soon might Lidocaine + diphenhydramine rinse ease mouth discomfort?

The lidocaine in this rinse temporarily numbs tissue where it makes contact. Some people may notice numbness soon after use, but the onset, strength, and duration of relief are not the same for everyone. Results vary. There is no guaranteed timeline for this compounded combination.

Less pain does not necessarily mean the underlying problem has healed. Mouth pain can come from sores, an injury, an infection, or a dental problem that needs separate treatment. The rinse does not replace an exam or treatment for the cause. Ask your prescribing physician how long you should try it and when to check back.

Do not increase the amount or frequency if relief is weaker or shorter than expected. Follow your physician and pharmacy label for dosing. Avoid eating or drinking while numb, even if your mouth feels more comfortable. Contact a dentist or physician for worsening pain, fever, facial swelling, or trouble drinking enough fluids. Trouble breathing or rapidly increasing mouth or throat swelling needs emergency care.