Can You Kill a Dog with Benadryl Medication? - Quick Answer

Can Benadryl kill a dog? I have often heard this question from some pet owners. I know, it's a ridiculous question but I have to answer this in the following piece of article.

Yes, Benadryl can cause life-threatening consequences or even death when taken in high doses, i.e. above 500mg in 24 hours. Side effects of an overdose may include, diarrhea, vomiting, nausea, sedation, lethargy, loss of appetite, dry mouth, dizziness, and even death (in extra high doses), etc.


How Can I Kill my Dog with Diphenhydramine?

Benadryl contains the active ingredient, "diphenhydramine" which is an antihistamine medication used for the treatment of seasonal allergies in dogs.

It effectively treats the signs and symptoms of colds and allergies. Veterinarians often recommend it to remedy runny nose, watery eyes, coughing, breathing difficulty caused by allergens, pollen or grass allergy, itching, irritations, rashes, redness, inflammation on the skin, etc.

The recommended dose for dogs for diphenhydramine is one milligram (01 MG) per one pound (01 LB). So the ideal dose of Benadryl for 25 pounds (lb) dog will be 25mg per day (in 24 hours). The vet may raise the dose from 25mg per day to (maximum) 50mg per day for a 25 pounds dog by checking the current condition. However, any dose above that may cause side effects, adverse reactions like sedation, or death.

Overdose doesn't cause sudden death but may give some unwanted consequences at first. Below are the common side effects you may observe in your pet while giving Benadryl overdose;

  • Vomiting
  • Nausea
  • Diarrhea
  • GERD (Gastroesophageal reflux disease)
  • Constipation
  • Anorexia (complete loss of appetite)
  • Digestive tract ulcers
  • Dizziness
  • Dry mouth
  • Mood swings
  • Lethargy
  • Sleepiness

If you see any of the above effects in your pet after using Benadryl (antihistamine) medication you must contact your pet's doctor.

Extreme High Doses of Benadryl

In the above section of the article, I share the information about overdose, like, the suggested dose for your pet was 25mg per day and you accidentally have given 50mg (by chance). So the pet becomes prone to overdose side effects (show above).

But if we talk to, "How to Kill a Dog with Benadryl medication?" it's another scenario.

Benadryl may cause death when it will be taken in extremely high doses like 500mg a day or even more than that.

High doses of diphenhydramine (an antihistamine drug) may cause sleepiness, sedation, and even death. Extreme dose works as a nervous system broker and shuts up the brain with shock. Hence, cause instant death (within a few seconds or minutes).

An intravenous (I.V.) dose of Diphenhydramine works better than the oral dose (if you're trying to kill your dog with drugs).

Do Killing dog with Benadryl Painless?

Some pet owners consider whether killing their pets with drugs like Benadryl is a painful procedure or not. However, no doubt it causes less pain than killing your pet with a knife, gun, etc.

A high dose of Benadryl causes sleepiness at first and then breaks down the Nervous system of the body. It's less painful than other methods of killing a dog. High doses of antihistamines also cause cardiac arrest.

Why Do Pet Owners Kill their Dogs?

No doubt, no one wants to kill their furry friend unless death becomes the only source of comfort for their dogs.

Dogs that have been diagnosed with chronic and life-threatening disorders, i.e. Cancer, etc. It becomes hard to see a dog in pain for the rest of its life. Not all pet owners go with this option but some agree with their dog's doctors and the final suggestion.

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