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Benadryl for Dogs Calculator

Enter your pet’s weight along with selected unit. The benadryl dosage for dogs calculator will instantly estimate the required dosage in both tablet and liquid form.

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We have designed a special benadryl for dogs calculator that helps to estimate the safe amount of Diphenhydramine for your lovely dog.

Most of us may find this particular medical drug in our almirahs or first aid kit box as it is effective for humans too besides pets. But you must be aware of the benadryl dose for dogs or how much of its quantity would be sufficient to treat a certain disease in your pet, which is a dog here. Keeping in view the importance of the subject, we have developed this article, dog benadryl dosage chart, and benadryl dosage for dogs calculator to get instant estimates of drugs in order to cure your pet's disease.

So to learn more about it, jump to the article below!!!

What Is Benadryl for Dogs?

Basically, benadryl is a drug intentionally prepared for humans. But a significant quantity can also be given to dogs to treat medical disorders like anxiety, motion sickness, or allergic reactions. And to most precisely calculate the dog benadryl dosage for your dear pet, you may likely use this free benadryl dosage for dogs calculator. The best thing about this free calculator is that it lets you know the considerable dosage in both solid or liquid forms so as to treat your dog accordingly.

How Much Benadryl Can I Give My Dog?

Normally for each single pound, the benadryl dosage ranges in between:

  • 0.8-1.9 milligrams (Incase of solid dosage)
  • 0.4 millilitres (Incase of a liquid dosage)

But a better estimation as per your dog's weight can instantly be taken by using this how much benadryl can i give my dog calculator.

When your dog is prone to some allergic issue, you may think how much benadryl can you give a dog. And to know the best answer against it, you must read this section below!!!

Digging Deeper!

Just make a supposition that your dog is frightened of heights. So you may think can i give my dog Benadryl in this situation or not! Well, let us guide you to tackle the situation!

The average weight of a dog is about 25 pounds and per 5ml children’s benadryl for dogs solution contains about 12.5mg of it. So keeping in mind these compositions:

Tablet Benadryl For Dogs:

Milligram = 25 * 1ml = 25 kg/per mole

So we have the following conditions:

Liquid Benadryl:

Converting mg to mL:

12.5/5 = 2.5mg per 1 single mL

mg/mL = 2.5

But we actually ned 22 milligrams of dose:

25/2.5 = 10mL

You can also better cross check the estimations by using our best benadryl for dogs calculator.

Is Benadryl Safe for Dogs?

Benadryl is a drug mainly composed for humans and not dogs as well. That is why it is not recommended to use it for your dog every time as it brings many harmful effects to the health. That is why we have specially coded some of the major citations to keep in mind while treating your dog with any sickness:

Consult a Vet:

If you want to know how much benadryl for a dog is required, then you should consult a veterinarian. Go by treating your pet according to the prescriptions as given by the vet. Moreover, you can also do instant dosage calculations with this benadryl dosage for dogs calculator and discuss it with the vet.

Active Medicinal Elements:

Must go for making sure that the dosage contains sufficient active elements in its composition to cure the medical issue concerned with your pet.

Never Follow The Dosage on Box:

The quantity of allergic medicines for dogs is written on the boxes most of the time. Never go by following them. Always determine benadryl dosage by weight for your pet by consulting with the professional vet.

Avoid Dosage In Special Medical Conditions:

If your pet is subjected to certain medical conditions like pregnancy, lower blood pressure, Glaucoma, or cardiovascular disorder, you should avoid giving children’s benadryl for dogs even. This is because it may cause severe health problems.

Benadryl for Dogs Dosage Chart:

Can dogs have benadryl? Well, this question mostly comes to mind whenever your pet gets injured or suffers from any kind of severe disease. But do not worry as we have researched and arranged a proper dosage chart for benadryl dose for dogs in both hard and liquid form. Let’s get through these!! (Never go by following the dose recommendations in the tables. You must consult to an experienced vet before taking any decision)

Benadryl For Dogs: Dosage By Weight:

Weight of Dog (lbs)

Dosage in Tablets (mg)
















Benadryl For Dogs: Dosage Chart mL:

Weight of Dog (lbs)

Dosage in Tablets (mL)
















Benadryl Usage for Dogs:

Basically, benadryl is an antihistamine kid of drug that has various applications to cure short term diseases in dogs such as:


The problem of anxiety is very common among dogs. Whenever they are subjected to a condition like fireworks, travelling, or loudness, they get disturbed and in such a situation, benadryl is the best dosage to calm them down.

Motion Sickness:

While travelling most of the time, benadryl helps to cure motion sickness in dogs because it is an alarming problem associated with it.

Tumour Treatment:

Whether dogs are affected from malignant tumours or cancerous diseases, benadryl is the only medicine that could provide instant relief from severe pain.


When insects or any kind of infected worm bite dogs, they are affected very badly. That is why benadryl provides instant cure to fight infection caused due to this.

Precautions When Giving Benadryl To Dogs:

While asking vet that how much benadryl to give a dog, you must follow the instructions below to avoid any medical disorder:

  • You must check the composition of the medicine as it should only contain diphenhydramine as an active agent. Also, never try using any other drug when you have already given a considerable dose to your dog
  • If there is any alcohol composition mixed with the medicine, never use it
  • Xylitol is a sweetener that may be present in many benadryl dosages for humans. But this is very dangerous for dogs. So avoid giving such drugs to your pet
  • If your dog’s weight is more than normal, you must go by calculating its weight to decide for the dose. Here for instant calculations of your pet’s weight, you can use another puppy weight calculator.
  • If your dog is subjected to any kind of swelling after giving benadryl, then the situation is alarming and you immediately should take it to the veterinarian

Side Effects of Benadryl:

As every medicinal drug has its disadvantages, benadryl has too that include:

  • Sluggishness in reactions
  • Dryness in mouth
  • Retention in urination
  • Extra sleep
  • Diarrhoea
  • Vomiting
  • Allergic reactions
  • Excitement

Overdose of Benadryl Dosage for Dogs:

According to studies, mostly dogs have survived severe benadryl dosage up to 16 times more than normal. But it is not okay to overdose as it could harm your dog anyway. Most common symptoms of overdose include:

  • Fast or irregular heartbeat
  • Difficulties in breathing
  • More than normal fatigue
  • Muscles tremors
  • High blood pressure
  • High temperature
  • Seizuring

According to recent research, it is confirmed that 621 dogs have been given overdose of benadryl between the years 208 and 2013. Out of these, only 3 dogs could not survive.

How Benadryl For Dogs Calculator Works?

Let’s move on and learn how you could use this benadryl dosage for dogs calculator to estimate the benadryl dose for your pet instantly!


  • Enter the weight of your dog and select the weight unit from the next list
  • Now tap the calculate button


The calculator estimates:

  • Benadryl dosage for dog in both mg and mL
  • Number of tablets required
  • Number of chewable tablets
  • Dosage revision per day


Can I calculate the liquid Benadryl dosage for dogs?

Yes you can. As aforementioned, you just need to divide the weight of your dog by 2.5mg. And for a better estimation, you must use the online benadryl for dogs calculator absolutely for free.

What dosage of Benadryl do vets generally recommend in the US for dogs?

1 gram per 1 pound is the standard dose of benadryl dosage for dogs recommended in the United States.

What's the Benadryl dosage for dogs in mg per kg (kilograms)?

The relative enough dosage is approximately 2.2 grams per single kilogram weight of your dog.

How often can you give a dog benadryl?

You should not exceed 3-4 times a day or 8-12 hours while giving a dose to your dog.

How much Benadryl can I give to my 20 lb dog?

Following are the sufficient doses in both liquid or solid forms:

  • 8mL
  • 12.5 Chewable Tablets

How much benadryl to give a 50 lb dog?

  • In solid form, the recommended dose is about 50mg per 50lb
  • When it comes to liquid form, the quantity becomes 20mL
  • Four chewable tablets (each contains 12.5mg)

How much benadryl to give a 10 pound dog?

The relative normal dosage for a 10lb dog is about 10mg or 45mL, respectively. For further better estimations, you can utilise this free benadryl for dogs calculator.

Can you give dogs Benadryl every day?

Whenever you think about how much benadryl can i give my dog, then keep in mind that giving a dose every other day exceeds the normal quantity of drug that a dog’s body needs. That’s why you should avoid the frequent use and use this benadryl for dogs calculator for this purpose.

What are dogs allergic to the most?

Dogs are most likely to be affected from proteins, beef, dry chicken, soy, or wheat glucon.

Can I give my dog benadryl for itching?

Yes, as itching is a kind of allergic reaction, giving benadryl can help you tackle the medical condition of your pet.


Benadryl is the most reliable and effective allergies medicine for dogs. That is why most of the vets nowadays recommend using this specific drug while treating dogs. And for a better dosage prescription, they use this online benadryl for dogs calculator to compare the dosage values with standard charts.


The results provided by this calculator are just estimations. So never ever only rely on these estimations. A better approach is to tell the vet about these results and get a proper medication prescription. This will lead the dog to live a healthy life.


From the source of Wikipedia: Diphenhydramine, Medical uses, Adverse effects, Contraindications, Pharmacology

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