Benadryl for Dogs Best Information And Tell You What is Benadryl

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Is Benadryl for Dogs is Safe? Whenever you have the flu or cough, the first thing that comes to your mind is to visit a doctor and get the medication for your cold. Just like humans, dogs also feel unwell. Certain conditions occur in dogs which may include allergies, travel anxieties, and motion sickness.

Benadryl is a famous medicine. It is used for humans to treat allergies. Usually, all medications which specially used for human beings cannot use on the dogs. However, some medicines like Benadryl can be used on Dogs as well but with a proper prescription of veterinarians. A veterinarian is an animal doctor. Make sure to consult a veterinarian before giving any kind of medication to the dogs.

benadryl for dogs

As both humans and dogs react differently to the medications. There is a possibility that a medicine that is perfect for a human could prove lethal for dogs. Therefore, you must consult a veterinarian before providing any kind of medication to your dog. However, in the following section, we will give you all information regarding Benadryl for Dog.

Benadryl is usually considered safe medicine for the dogs. It can treat a lot of different diseases in dogs which may include seasonal allergies, motion sickness, skin allergies, and cold. There are inevitable downfalls associated with these products. In the following section, we will discuss all the information you needed for this.

What is Benadryl

The chemical in Benadryl is Diphenhydramine, which is a first-generation ethanolamine-derivate anti-histamine. Anti-histamine is usually used to treat allergies in humans like flu, cold, itching, and cough. However, research shows that it is quite useful for dogs as well. FDA does not approve this drug, yet it is quite useful in dogs. It is given to dogs in the USA by many veterinarians.

what is benadryl

How Benadryl works in Dogs

Well, there is a chemical compound available in dogs which ishow benadryl works called Histamine. It is involved in the local immune response. Usually in inflammatory response and mediator. By consuming Diphenhydramine, which is a receptor antagonistic, blocks the receptor that receives histamines in the body. In addition to this, it also revives from symptoms of allergy. The body will keep on producing histamines, but anti-histamine or Diphenhydramine will keep on blocking the receptors cells in these symptoms could be overcome.


What does Benadryl treat in Dogs

There are several conditions in dogs that can be treated with the help of Benadryl. This medicine is, however, not recommended by the FDA, but it has shown sound effects in dogs and cats. There are several different kinds of allergies in dogs. They may have seasonal allergies, environmental allergies, and food allergies. Benadryl can help treat these allergies. In addition to these allergies, Benadryl for dogs can also be used in treating many other conditions like

  • Itching
  • Inflammations
  • Sneezing
  • Cold
  • Coughing
  • Anxiety
  • Travel sickness

One of the main side effects of anti-histamines is that your dog may feel sleepy or tired. However, we will discuss the side effects in detail in the following section.

what does benadryl treat in dogs - benadryl for dogs

When to use Benadryl on your dog

Well, if your dog is facing any kind of conditions mentioned above, you can give him Benadryl. However, we do recommend you consult any veterinarian before giving the dosage of this medicine. Furthermore, in some cases, if you give this medicine to your dog on your own, the condition could get worse. For example, if your dog is suffering from Glaucoma, Benadryl for such a term could make it even more severe. Therefore, do always consult a veterinarian before giving any kind of medicine. In addition to this, the dosage of the Benadryl depends upon the weight of your dog. If your dog is massive, the veterinarian may prescribe Benadryl two to three times a day.

Furthermore, if an insect bites your dog, which will cause allergies, you can treat it with the help of Diphenhydramine. Within a few days, your dog will be perfectly well.

when to use benadryl for dogs - benadryl for dogs

What are the side effects of Benadryl

There are specific side effects associated with Benadryl. In humans, this medicine causes drowsiness, whereas, in dogs, they also cause particular side effects. Therefore, you must consult your veterinarian before giving your dog Benadryl. Below is the list of some medical conditions in which you must consult a doctor before giving Benadryl.

  • Pregnancy
  • Lungs disorder
  • Seizures
  • Heart problem
  • Glaucoma

benadryl side affects

In addition to this, some of the common side effects that occur in the dogs when they use Benadryl.

  • Drowsiness
  • Fast Heart Rate
  • More salivation
  • Dry mouth
  • Increased heart rate and breathing
  • Frequent urination

Some of the rare side effects in dogs are

  • Loose motion
  • Vomit
  • Change in appetite

Benadryl dosage for dogs

Well, the right dosage of the medicine is compulsory for the dogs. The single dosage is 25 milligrams; usually, the dosage is based on body weight. If the importance of the dog is 25 pounds, a single dosage will be enough. However, your pet doctor will recommend you the exact dosage of Benadryl. In addition to this, if the weight of the dog is less than 25 pounds, you can give the liquid syrup of Benadryl for children.

A single dosage is given to the dogs two to three times a day. However, you should visit a veterinarian before giving Benadryl to your dog. Overdosage of Benadryl can cause many other problems for your dog. Abuse of the drug could prove fatal. It can cause Diphenhydramine poisoning. Some of the signs of overdosage include constipation, dilated pupil, seizures, and irregular heartbeat. Therefore, it is compulsory that you strictly follow the doctor’s recommendation before giving your dog this medicine. You must avoid giving overdosage of this medicine to your dog.

benadryl dosage

When to avoid giving Benadryl to your dog

There are certain conditions when doctors don’t prescribe Benadryl to humans. Similar is the case with dogs. Under certain circumstances, you cannot give Benadryl or any anti-histamine to your dog. If your dog is pregnant or suffering from Glaucoma, do consult your doctor before giving Benadryl. In addition to this, if your dog has other medical conditions like heart problems, kidney problems. Avoid giving Benadryl to your dog in those conditions.

What is the alternative to Benadryl

Well, the good news is that certain medications can also be used alternatively to Benadryl. These medicines are also proved to be active on all kinds of allergies.


If your dog is suffering from an allergic condition like red eyes, sneezing, and inflammation, you can give him the Quercetin. It is available in the peels of some fruits. The great thing is that it has the properties of anti-histamines, anti-inflammatory, and anti-oxidants. You might need to prescribe the right amount of dosage to your dog. Overdosage can cause many different problems in your dogs. There are many foods in which you can find Quercetin which includes strawberries, spinach, and blueberries.



Cannabidiol is also known as CBD. It is used to treat allergies in humans and in dogs. It is not derived from cannabis but from agricultural hemp. CBD has a lot of benefits for humans and animals. It can treat skin allergies and food allergies in dogs. It is also helpful in treating anxieties, pains, nausea, and cancer in dogs.


Baking Soda

Baking soda is widely used for cooking purposes. However, it also has a lot of anti-allergic properties. If your dog is suffering from skin allergy or skin redness, you can apply baking soda on it. Just mix a little bit of baking soda in the water and applies it gently to the affected areas. You can also make a spray and use it on the affected areas. Baking soda has a lot of anti-allergic properties, and it can also be used to disinfect the places.

baking soda

 Is Benadryl safe for dogs

As mentioned earlier that Benadryl is used for treating allergies in dogs. You might be thinking that is it safe to use Benadryl for dogs. Well, research shows that it is safe to use Benadryl for dogs. It can treat seasonal allergies, food allergies, skin allergies, and motion sickness. Benadryl also proved to be perfect for treating anxieties in dogs. FDA doesn’t approve this medicine for the dogs. However, according to the research, Benadryl has shown positive and sound effects in cats and dogs.

How long will the effect of Benadryl last on the dogs

It entirely depends on the dosage you are giving to your dog. However, generally, the effect of Benadryl usually lasts for 8 to 12 hours in the dogs. During that time, your dog may feel sluggish and tired. In addition to this, they may also feel drowsy, which is the side effect of Benadryl or Diphenhydramine. The next dosage of the medicine will give after 8 to 12 hours of the first dosage in 24 hours. The dosage depended on the weight of the dogs.

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