How should I store Lidocaine + diphenhydramine rinse?

The dispensing pharmacy's label is the best guide to storage. A compounded rinse may have storage needs that depend on its ingredients and liquid base. Do not assume that room temperature or refrigeration is correct. If the label does not give clear instructions, call the pharmacy before storing or using it.

Keep the rinse in its original, labeled container with the cap tightly closed. Store it securely away from children, pets, food, and drinks. Avoid leaving it in a hot car or anywhere with large temperature changes. Do not transfer it into a drink bottle or an unlabeled container.

Follow the labeled beyond-use date, even if some rinse remains. Do not use it after that date unless the pharmacy has provided a replacement with updated instructions. Contact the pharmacy if the bottle leaks, arrives damaged, or the rinse changes in color, smell, or texture. Ask how to dispose of leftover medicine safely. Compounded medications are prepared by a licensed pharmacy for one patient and are not FDA-approved.