Sleep difficulties in adults: United States, 2020. MedlinePlus. Diphenhydramine. National Health Service (UK). Diphenhydramine. Code of Federal Regulations. Part 338—nighttime sleep-aid drug products ...

The dosage is based on your age ... Do not give children medicines labeled only for adults. Tell your doctor if your condition lasts for more than 1 week, if it gets worse, or if it occurs ...

(Photo Credit: E+/Getty Images) Getting the dosage right is important because most Benadryl tablets are intended for humans. Dogs are smaller than people, so they need less Benadryl than a person.

Here's what you should know about Benadryl's uses, dosage, and side effects for dogs. What is Benadryl used to treat in dogs?