 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval. Do not use with any other diphenhydramine product applied to the skin or taken by mouth because increased side effects may occur. Does Wal-Dryl Spray, Non-Aerosol interact with other drugs you are taking? Enter your medication into the WebMD interaction checker Check InteractionThe overdose of Wal-Dryl (Diphenhydramine) Topical: This product may be harmful if swallowed. If too much of this medication is applied to the skin, wash it off with plenty of soap and water. If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include: mental/mood changes, </s>