Does Benadryl make dogs sleepy?

Benadryl can cause drowsiness in dogs, which is a common side effect that many pet owners notice after administering the medication.

• Drowsiness or lethargy after administration
• Reduced activity levels or increased sleep
• Occasional mild gastrointestinal upset

It's important to monitor your dog's response to Benadryl and consult with a veterinarian if you have concerns about his reaction. Although drowsiness is typical, each dog's reaction can vary, and understanding why it happens is key to ensuring your pet's comfort and safety.

If you have further concerns or notice unusual symptoms, please book a consultation with one of our veterinarians at Dial A Vet.

Frequently Asked Questions

• Is drowsiness a common side effect of Benadryl in dogs?
  Yes, drowsiness is one of the most common side effects of Benadryl in dogs. It is similar to how people might feel slightly sleepy or lethargic after taking an antihistamine.
• How long does the drowsiness from Benadryl last in dogs?
  The drowsiness typically lasts for a few hours, depending on the dose and the individual dog's metabolism. If it persists or your dog seems excessively lethargic, consult your veterinarian.
• When should I be concerned about my dog's reaction to Benadryl?
  If your dog experiences symptoms that are severe, unusual, or persisting much longer than expected, such as extreme lethargy, vomiting, or respiratory issues, consult a vet immediately.