How Much Benadryl Can I Give My Dog?

How Much Benadryl Can I Give My Dog?

Dogs can get allergies just like people do, and if your dog is one of the unlucky ones who suffers from them, you may be wondering if Benadryl is safe for your dog. Well, Benadryl is a medication that is used to treat allergies in people, and it can be used to treat allergies in dogs as well.

One question we get asked quite often is "how much Benadryl can I give my dog?" In this blog post, we will discuss how much Benadryl you can give your dog and the risks associated with giving too much. We will also provide some tips on how to safely administer Benadryl to your dog. So if you are wondering whether or not Benadryl is the right choice for your furry friend, keep reading!

What Is Benadryl?

Benadryl is an antihistamine that is used to alleviate allergy symptoms. Benadryl is available over-the-counter in the form of tablets, capsules, and liquids. It can also be given intravenously by a healthcare provider.

Can I Give My Dog Benadryl?

Yes, you can give your dog Benadryl. It is one of the most popular over-the-counter drugs to give to dogs. While it is not a cure-all, it can be helpful in treating a number of conditions, including allergies, travel sickness, and insect bites or stings.

Benadryl works by blocking histamine receptors. Histamines are chemicals that are released by the body in response to an allergic trigger, such as pollen, dust, or animal dander. When histamines are released, they cause various symptoms. By blocking the histamine receptors, Benadryl can help to reduce these symptoms.

The most common symptoms that Benadryl can treat include:

  • Seasonal allergies

  • Motion sickness

  • Anxiety

  • Food allergies

  • Environmental allergies

  • Treatment of mast cells tumors

  • Snake and insect bites

  • Heartworm treatment (prevents allergic reactions during treatment)

Benadryl Dosage For Dogs

A dog wrapped in a blanket

A 25 mg dosage is standard for most drugstore Benadryl tablets. However, the right dose of Benadryl for dogs will be determined by the dog's weight, just like it would with any medication.

Correct Dosage For Medium-to-Large Dogs

The usual dose for a dog is 1 milligram per pound of body weight, so one tablet is adequate for a 25-pound dog. Veterinarians recommend dosing your pet every 8-12 hours (about 2-3 times per day).

Correct Dosage For Small Dogs

Small dogs weighing less than 25 pounds should be given liquid Benadryl. Liquid Benadryl is simpler to measure out in smaller dogs because it contains a lower concentration of the active ingredient.

And as opposed to the adult version, which includes alcohol, the juvenile formula of liquid Benadryl is safe for dogs.

Guidelines For Benadryl

Time-release Benadryl capsules are not recommended for dogs. Time-release capsules are absorbed differently in people and dogs, so the amount of medication your dog receives may be altered.

If your dog is suffering from a severe allergic reaction, make sure to take him or her to the vet right away. Benadryl can help to ease symptoms in the meantime, but it's not meant to be a substitute for professional medical care.

Does Benadryl Have Any Side Effects?  

A dog running in the field

When giving your dog any medication, it's important to monitor him or her for any adverse effects. The most common side effect of Benadryl is drowsiness, so make sure not to give your dog the medicine before he or she needs to be active.

Urinary retention, excessive drooling, increased heart rate, and loss of appetite are all other possible adverse effects of Benadryl. The side effects of Benadryl for dogs are typically considered to be minor because the drug is frequently given to dogs.

However, as with any medication, there is always the potential for side effects. If you notice any adverse effects in your dog after giving him or her Benadryl, contact your veterinarian right away.

How Long Does It Take For Benadryl To Work In Dogs?

Benadryl or Diphenhydramine is commonly regarded as a fast-acting medicine for dogs. You can anticipate it to take effect in 1 to 2 hours, but it often begins working within an hour. If you want to give your dog Benadryl before heading outside into long grass, try to time it, so the benefits coincide with your excursion outdoors.

Can Benadryl Be Used To Calm A Dog Down?

While Benadryl is not a sedative, it can be used to help calm a dog who is anxious or stressed. The medication works by blocking the histamine receptors, which can help to ease symptoms of anxiety, such as fearfulness and panting. However, Benadryl is not recommended as a way to treat anxiety in dogs. If your dog is suffering from anxiety, talk to your veterinarian about other treatment options

Alternatives Of Benadryl For Dogs?

Diphenhydramine is not the only antihistamine that can be used to ease your dog's allergic reactions. Antihistamines such as cetirizine (Zyrtec) and loratadine (Claritin) are also effective in treating allergies in dogs. Like Diphenhydramine, these medicines are available over the counter and don't require a prescription from your veterinarian.

Need a natural alternative? Try CBD. CBD is a cannabinoid that can help to relieve anxiety and itchiness in dogs. CBD for medical usage is not derived from cannabis but from agricultural hemp, which has various health advantages for both people and animals.

CBD is available in a variety of forms, including treats, tinctures, and capsules. CBD products don't typically have any major side effects, making them a safe option for dogs.

Baking Soda is another remedy that can be used to relieve itchiness in dogs. Baking soda can help to soothe the skin and reduce irritation. To use, mix 1 teaspoon of baking soda with 2 cups of water. Apply the mixture to your dog's skin with a cotton ball or cloth. Rinse after 10 minutes.

Asides from CBD and baking soda, oatmeal is a natural ingredient that can be used to relieve itchiness in dogs. Oatmeal is a natural anti-inflammatory that can help to soothe the skin. To use, mix 1/2 cup of oatmeal with 1 cup of water. Apply the mixture to your dog's skin and let it sit for 10 minutes before rinsing.

It's important to remember that each dog is different, so one antihistamine may work better for your pet than another. If you're unsure about which antihistamine to give your dog, ask your veterinarian for a recommendation.

What Causes Dog Allergies?

There are a variety of things that can cause allergies in dogs, including:

- Food

- Flea bites

- Dust mites

- Pollen

- Mold spores

- Insect stings

Dogs can also be allergic to certain chemicals, such as those found in cleaning products or laundry detergent. If you think your dog may be allergic to something, talk to your veterinarian. He or she can help you identify the allergen and recommend treatment options.

When To Avoid Giving Your Dog Benadryl

A dog laying on a bench

Benadryl may cause problems when taken with other medicines. Do not combine Benadryl with any central nervous system depressants, such as alcohol or sedatives, on a pet with high blood pressure, seizures, bladder issues, lung disease, or glaucoma. If your dog's breathing is difficult or he has a bloated face, take him to the veterinarian right away.

Can My Dog Experience A Benadryl Overdose?

According to the Merck Veterinary Manual, it's possible for your dog to overdose on Benadryl. Signs of an overdose include excessive excitability of the central nervous system (CNS), which can be fatal. Symptoms usually appear within one hour after ingestion.

When To Seek Veterinary Attention

If you believe your dog has taken too much medication, contact or visit your local veterinarian or emergency veterinary center as soon as possible. Here are some warning signs to look for:

  • Excessive salivating

  • Hyperactivity or depression

  • Rapid heartbeat

  • Constipation

  • Seizures

  • Dilated pupils

  • Rapid breathing

  • Agitation

Is It Possible For A Dog To Have A Benadryl Allergy?

Benadryl might cause allergic reactions in certain dogs. If your dog starts displaying symptoms of an allergy, go to the veterinarian right away. Benadryl for dogs is often used to treat allergies, so keep an eye on your dog after giving it the first time to be sure that the allergy symptoms do not get worse.


-Benadryl is a brand name for an antihistamine (diphenhydramine HCl) that can assist with allergic reactions and even anxiety.

-Benadryl is a relatively safe and efficient drug for both dogs and cats, but you should first discuss it with your veterinarian. If you think your dog has overdosed, call or visit your local veterinarian or emergency veterinary hospital immediately.

-Benadryl may also cause allergic reactions in some dogs, so observe your pet after giving it the first time.

Need Printed Pet Items? Shop From Our Store!

Pet allergies are no fun, but you can help your furry friend feel better with the right products. From blankets to portraits, we have everything you need to make your pet feel loved. Check out our store today!

Leave a comment

Comments will be approved before showing up.