Related: Benadryl for Dogs: Side Effects of Long-Term Use At normal doses, Benadryl is quite safe, but a survey of over 600 dogs (1) found the following signs of overdose: Three of the dogs in ...

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 ...

If you miss a dose, use it as soon you remember. If it is near the time of your next dose, skip the missed dose. Use your next dose at the regular time. Do not double the dose to catch up.