Does Benadryl make dog not sleepy?

Benadryl® may make some dogs a little sleepy and less responsive, but it doesn't do anything for their underlying anxiety. Benadryl® does has some efficacy in the prevention of motion sickness in dogs. So, if your dog is anxious because they're nauseous in the car, it could help.



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Children's liquid Benadryl can be used for small dogs using the same dosage. Avoid the adult formula of liquid Benadryl, as this often contains alcohol, which is toxic to dogs.

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Yes, Benadryl is an antihistamine that causes drowsiness in most people. Some people use Benadryl for this side effect if they have trouble sleeping (insomnia), but this is not recommended long-term. The drowsy or sedation effect typically lasts about 8 hours, but may persist into the next day if taken at night.

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A good quality dog's bed accompanied with a warm blanket will help your dog sleep in no time. It may also help to have a low sound nearby to help your dog drift off. For example, a clock that can offer a rhythmic ticking sound, or white noise from the radio.

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Side effects include sleepiness, increased appetite, incoordination, weakness, agitation, drooling, and aggression.

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