Benadryl Side Effects: Is Benadryl Safe for Dogs?

Benadryl is a medication used for the treatment of allergies, anxiety, and motion sickness. In this article, we will talk about Benadryl for dogs: side effects, dosage, and reviews.

Side effects of Benadryl in Dogs

What are the side effects of giving a dog Benadryl?

The most common side effect of Benadryl for dogs is drowsiness, which can make your pet sleepy.

Here are some of the side effects that can occur when you give Benadryl to your dog:

  • Drowsiness or sleepiness
  • Vomiting
  • Diarrhea
  • Changes in appetite
  • Urinary retention
  • Dry mouth

Benadryl may cause side effects that are not listed here. If your dog has a medical condition or is taking other drugs, consult your vet before taking any medication.

Benadryl for dogs reviews

Benadryl is a safe and effective over-the-counter (OTC) medication. It’s used to treat allergic reactions and motion sickness.

Benadryl is available as tablets, liquid suspension and chewable tablets. All forms of the drug contain the same active ingredient.

The active ingredient in Benadryl is diphenhydramine. It works by blocking histamine receptors in the body, which reduces allergic reactions.

Benadryl dosage for dogs is 1 mg per pound of body weight. For example, if your dog weighs 30 pounds, you would give them 30 mg of Benadryl. It can be given two or three times a day to dogs.

You should always follow your veterinarian’s instructions for the proper dosage for your dog’s specific condition or illness.

Benadryl is safe for most dogs, but it’s not recommended for pregnant and nursing dogs. Your vet can give you more information about the drug and its use with your pet’s condition.

Seek veterinary help immediately if your dog exhibits any signs of toxicity, such as lethargy, depression, increased heart rate and breathing difficulties.

If your dog has a severe allergic reaction to Benadryl, go to the emergency room immediately.

There are some contraindications you should be aware of before administering this medication to your dog.

  • Prior sensitivity
  • Angle-closure glaucoma
  • Enlargement of the prostate
  • Narrowing of the pylorus or bladder neck
  • Chronic obstructive pulmonary disease, or COPD
  • Overactive thyroid
  • Cardiovascular disease
  • High blood pressure (hypertension)

Benadryl might interact with antidepressants and other drugs that act on the serotonin system. If your dog is taking any medications, it’s important to discuss your plan for administering Benadryl with your vet or pharmacist before starting treatment.

Always consult your veterinarian before giving your pet any medication. If you have any questions about the safety or efficacy of these drugs, ask your vet before giving them to your dog.

“I have a 6-month-old puppy who is allergic to everything. He has had a rash for over a month now, and no one can figure out what it is or how to treat it. I came across Benadryl on Amazon and decided to give it a try. I started with the smallest dose recommended, which was 1/2 of the recommended dosage, but it seemed to help him calm down his allergic reaction. After about 2 weeks of using Benadryl every day, he no longer has a rash anywhere on his body. He also doesn’t seem to be quite as itchy as before either. I’m glad that I found something that works so well!”

“We have a 5-year-old lab, who is a rescue dog. He’s been on Benadryl for about 3 days now, and it really seems to be helping with his allergies. He doesn’t scratch as much anymore.”

“My dog has been on Benadryl for a few days now and I couldn’t be more pleased. She’s been itching constantly. We got her checked out, treated, and started her on Benadryl. Within 2 weeks she had stopped itching entirely, was back to being playful and eating like a pig. If you have a dog with allergies who doesn’t respond to steroids or other medications, I HIGHLY recommend giving Benadryl a try!”

“We have tried every product on the market and nothing works. I decided to try Benadryl because of the reviews I read and I am very happy with the results. My dog no longer sneezes or itches all over. It also seems to help his breathing problems which was also a concern.”

“I have been using Benadryl for my dog, who has allergies. I have tried other medications but they did not seem to work as well as Benadryl. It helps him get through the entire day without getting sick or having an allergic reaction.”

How long do the effects of Benadryl last in dogs?

When you give your dog Benadryl, it will stay in the system for about 8 to 12 hours before it wears off, depending on how much medication you give your dog and how often you give it.

How long does it take for Benadryl to kick in for a dog?

Benadryl will take effect within 30 minutes, but it may take longer for some dogs to show improvements. The duration of action depends on the dosage, your dog’s weight, and other factors.

Conclusion of Benadryl side effects for dogs

Benadryl has been around for many years and has been studied extensively. However, it’s important to remember that Benadryl is not a substitute for veterinary care.

As with any medication, Benadryl is not a cure-all. If you are dealing with a chronic condition that can be helped by Benadryl, it may be worth continuing to take the medication for as long as it helps you. But it’s also important to remember that your dog will still need to take other medications as well. Talk to your vet about how long your dog can keep taking it and how much of a break is appropriate in between breaks.

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Hannah Elizabeth is an English animal behavior author, having written for several online publications. With a degree in Animal Behaviour and over a decade of practical animal husbandry experience, Hannah's articles cover everything from pet care to wildlife conservation. When she isn't creating content for blog posts, Hannah enjoys long walks with her Rottweiler cross Senna, reading fantasy novels and breeding aquarium shrimp.

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