Dental · FAQ
How should I swish and spit Lidocaine + diphenhydramine rinse?
Short answer
Measure Lidocaine + diphenhydramine rinse with a dosing device, swish as directed, and spit it out. Follow your prescribing physician and label for the amount and timing. Do not swallow it. Avoid food, drinks, and gum while your mouth or throat is numb because swallowing and chewing may be unsafe.
Read the pharmacy label before each use until you know the steps. Follow your prescribing physician's directions for the dose, time spent swishing, and daily limit. Typical directions are to swish 5 mL for 1 minute and spit, up to 4 times daily. Your own prescription takes priority.
Use a marked dosing device rather than a kitchen spoon. Swish gently around the area you were told to treat, then spit out the rinse. Do not gargle unless your physician specifically directs you to do so. Follow any label instructions about shaking the bottle. Ask the pharmacist if those instructions are missing or unclear.
Lidocaine can numb your mouth and throat. Avoid eating, drinking, or chewing gum while numb, and follow the label's waiting time before eating. Hot foods or drinks can burn tissue without you noticing. Be careful not to bite your cheek or tongue. If you cannot safely swish and spit, contact your physician before using the rinse. Seek urgent care for trouble breathing or swallowing.
Sources
Written by the Verra clinical team · Medical review pending
General information, not medical advice. If you're in crisis, call or text 988.
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