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

Benadryl is a human medication that can be used in dogs to relieve allergy symptoms. But you have to be sure you're giving the right dose for your dog's size. (Photo Credit: E+/Getty Images ...

The dosage is based on your age, medical condition, and response to treatment. There are many brands and forms of diphenhydramine ... away from children and pets. Do not flush medications down ...

Diphenhydramine HCl 12.5mg/5mL; cherry flavor; dye- and sugar-free, bubble-gum flavor; alcohol-free; contains sodium 15mg/5mL. Asthma and lower respiratory disorders. Glaucoma. Hyperthyroidism.

Diphenhydramine HCl 25mg; tabs; dye-free liq-filled softgels. Asthma and lower respiratory disorders. Glaucoma. Hyperthyroidism. Hypertension. Cardiovascular disease. GI or urinary obstruction.