Where to Buy Benadryl for Dogs


  • Product: Benadryl Extra Strength Cooling Anti-Itch Spray
  • Manufacturer: Johnson & Johnson
  • Brand: Benadryl®
  • Active Ingredients: Diphenhydramine HCI 2%, Zinc acetate 0.01%
  • Inactive Ingredients: Alcohol, glycerin, PVP, purified water, tromethamine
  • Indications:
    • Itching
    • Hives
    • Rash
    • Insect bite
  • Pack size: 2 fl. Oz Spray


Benadryl may be prescribed by your veterinarian if an allergic reaction occurs. This medication will help stop the itching and relieve your dog’s discomfort. This article will provide you with an overview of Benadryl for dogs: reviews, dosage, and side effects.

Where to buy Benadryl for dogs

Can you give dogs Benadryl?

Benadryl (diphenhydramine) is a medication that can be used to treat dogs with mild allergies, motion sicknesses, and anxiety during flights or car rides.

Benadryl works by blocking the action of histamine, which causes allergic reactions such as swelling, sneezing, and itching.

You should not give your dog Benadryl more than two or three times a day, or every 8 hours. Benadryl will start working within 30 minutes after oral administration and should last up to 8 hours.

Benadryl is not a steroid or an opioid (like pain relief tablets) and will not cause addiction or withdrawal symptoms with long-term use.

Common side effects of Benadryl in dogs can include drowsiness or sleepiness, dry mouth, and urinary retention.

You should also check with your vet before giving Benadryl to your dog if he has health problems such as intestinal or bladder obstruction, increased pressure in the eye, heart disease, high blood pressure, etc.

Benadryl might interact with antidepressants and other drugs that act on the serotonin system or central nervous system. If your dog is taking any prescription medications for depression or anxiety, check with your vet before using Benadryl.

If your dog isn’t responding well to the Benadryl, or if you’re not sure whether it’s working or not, you should take them to the vet immediately.

Where can I buy Benadryl for dogs?

Benadryl is an over-the-counter drug that you can purchase at any local pharmacy or grocery store. The brand name of Diphenhydramine is Benadryl, but you can find it under different names depending on where you live.

How many mg of Benadryl can I give my dog?

The standard dosage of Benadryl for dogs is 1 mg per pound of body weight, given every 8 or 12 hours.

Dog’s weight (lbs) Benadryl dosage (tablet)
5 lbs 1/2 tablet of 12.5 mg
10 lbs 1 tablet of 12.5 mg
20 lbs 1 and 1/2 tablets of 12.5 mg
30 lbs 1 tablet of 25 mg
40 lbs 1 and 1/2 tablets of 25 mg
50 lbs 2 tablets of 25 mg
60 lbs 1 tablet of 50 mg
70 lbs 1 and 1/2 tablets of 50 mg
80 lbs 1 and 1/2 tablets of 50 mg
100 lbs 2 tablets of 50 mg

If you’re giving Benadryl to your dog, first consult with your veterinarian to determine the best course of treatment based on your dog’s weight and condition.

Benadryl for dogs dosage chart ml

The BENADRYL® Liquid contains 2.5 mg of Diphenhydramine per ml so if your pet weighs 25 pounds he will need one tablet of 25 mg or 10 ml which equals 2 teaspoons.

Dog’s weight (lbs) BENADRYL® Liquid dosage (ml)
10 lbs 4 ml
20 lbs 8 ml
30 lbs 12 ml
40 lbs 16 ml
50 lbs 20 ml
60 lbs 24 ml
70 lbs 28 ml
80 lbs 32 ml
90 lbs 36 ml
100 lbs 40 ml

Benadryl reviews from pet owners

The Benadryl reviews are mostly positive, but there are some complaints.

“I have been using Benadryl for dogs for years. It works wonders on my dog’s allergies and keeps her comfortable all day long. She is a big girl and can be a handful when it comes to the allergy season.”

“I have a small dog that has a very sensitive stomach and skin issues, so I’ve tried several different things to help him feel better. I found this product at the store, so I decided to give it a try. It worked fantastically!”

“This stuff really works great! My dog’s allergies were very bad this year, so we tried everything under the sun. This really helped him get over his skin issues and he didn’t have any more symptoms after using this product.”

“This is an excellent product. My dogs are very allergic to fleas and ticks, so I’ve been using this product for the past 6 months. I noticed a huge difference in their health within the first week of use. They no longer scratch themselves as much, their coats are shiny and soft, and they’re not scratching themselves in the house as much either. It’s great!”

” I have a little dog who is allergic to everything. I was so happy to find Benadryl for dogs, but it doesn’t seem to work at all for him. He does not sneeze or itch, just like before he was on Benadryl. I am very disappointed in this product and would not recommend it to anyone else.”

“I have been using Benadryl for my dogs for years. I have tried other products but they do not work as well as Benadryl. It is easy to give them, has no side effects and they love it! I love that I can get them at a reasonable price, plus the shipping is so fast.”

Can I give my dog Benadryl every day?

Benadryl is a safe medication for healthy dogs and should be used for a maximum of 3 to 5 days unless directed otherwise by your veterinarian. Your veterinarian will advise you if Benadryl is the best treatment option for your pet’s condition.

What are the side effects of giving a dog Benadryl?

Reported side effects of Benadryl for dogs include:

  • Drowsiness or sleepiness
  • Vomiting
  • Diarrhea
  • Dry mouth
  • Excessive thirst
  • Constipation
  • Urinary retention
  • Hypersalivation
  • Increased heart rate
  • Rapid breathing

Apoquel vs Benadryl for dogs?

Apoquel and Benadryl are both good at treating itching due to allergies, but they have different mechanisms of action.

Benadryl can be used to reduce symptoms of allergies such as itching, scratching, and swelling. However, it may not completely eliminate those symptoms because it doesn’t target the underlying cause — instead, it works by suppressing histamine release from mast cells.

Apoquel is an FDA-approved medication designed specifically for dogs with allergic skin disease, also known as atopic dermatitis. It’s been shown to reduce itching and scratching in up to 80% of dogs within one month of treatment.

Apoquel is more expensive than Benadryl but it provides better relief from chronic itching caused by atopy or atopic dermatitis in dogs.

NOTE: It’s important to note that you should always consult with your vet before giving your dog any medication. While these medications may be safe for some dogs, there are many factors that can affect their effectiveness and even harm them if used improperly.

Benadryl toxicity in dogs

In rare cases, Benadryl toxicity can be a life-threatening emergency in dogs.

Benadryl should never be used with certain preexisting conditions, such as pylorus stenosis, COPD, overactive thyroid, cardiovascular disease, high blood pressure, and gastrointestinal or urinary tract obstructions. If your dog has any of these conditions, please consult your vet before using Benadryl.

Benadryl interacts with many other drugs, so if you’re using any prescription medication with your dog, check with your vet before giving her Benadryl.

Conclusion of Benadryl for dogs

When it comes to treating canine allergies, Benadryl is one of the most common medications used. It is a short-acting antihistamine that helps dogs to sleep and prevents them from itching.

Benadryl can be used safely in dogs as young as six months old, but it’s important to remember that it’s not safe for every dog. Before giving your dog Benadryl, talk with your vet about whether or not this would be a good option for your pet.

The recommended dosage of Benadryl for dogs is 1 mg per pound of body weight. For example, if your dog weighs 50 pounds, the dosage would be 50 mg of Benadryl.

Benadryl can take anywhere from 30 minutes to 1 hour for it to start working. This is because the body needs time to break down and process the medication before it can begin working its magic on allergies or other symptoms.

As with any medication, do not give your pet more than what the label recommends.


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