Will Benadryl make my cat sleepy?
Will Benadryl make my cat sleepy? As in humans, Benadryl can also have a sedative effect in cats, but Eddy cautions that it can have the opposite effect as well: Instead of calming your cat, your cat could become even more fired up, he says. Finally, you could potentially use Benadryl to prevent motion sickness in your cat before riding in the car.
How long does Benadryl drowsiness last?
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.