Benadryl Dosage For Dogs – Is It Safe For All Dogs?

Many of the dog owners are searching for the information of Benadryl dosage for dogs. Benadryl is safe for dogs or not it is a question among the dog lovers. Well, the answer is yes. Dogs can get benefit from Benadryl if they need it. Otherwise, extra use of Benadryl can cause serious problems to dogs. Benadryl is mainly made for humans for solving a number of problems.

But veterinarians suggest to giving dogs Benadryl in case of allergy, journey sickness or a headache. But excessive use of Benadryl can harm your dog a lot. So, using a drug not made for dogs should be very careful. Then, Benadryl for dogs will be safe.

What is Benadryl?

Benadryl is a common over-the-counter medicine. Diphenhydramine is the most common antagonist of H1. It works as an antihistamine to cross the blood-brain barrier. It is very effective but increases the risk of adverse effects comparing to less-effective second generation antihistamines. Some Benadryl also contains Acetaminophen and Pseudoephedrine. These two ingredients are very harmful to dogs. For treating some problems Benadryl is used for dogs but in a secured way. But it is mainly a medicine for humans.

Benadryl dosage for dogs

Is Benadryl Safe for Dogs?

Benadryl is safe for dogs but there is a lot more you should know about it. Benadryl containing diphenhydramine is totally safe for dogs. There is another Benadryl that contains Cetirizine, Acetaminophen, and Pseudoephedrine. These ingredients are not safe for dogs at all. They can damage the liver of your dog. It also increases heart beat rate and blood pressure. Besides, you have to be sure if the formulation is safe or not. You should check the package if the main active ingredient is Diphenhydramine or not. So, before giving Benadryl to your dog, you have to be more cautious.

Benefits of Benadryl

If you follow the correct Benadryl dosage for dogs, it will give you some benefits. Benadryl is an antihistamine that contains diphenhydramine. It is used for treating itching, allergies, insomnia, hyperactivity, swelling, vomiting and even anxiety. Especially, journey anxiety can be removed by Benadryl dose. The diphenhydramine in Benadryl blocks H1 receptors. It reacts with histamine in brain’s synapses. Benadryl also plays a role in the local immune response. At the time of itching and swelling, Benadryl works as a component of histamine resolver. It relieves inflammation, watery eyes and other allergy symptoms. It also cures the runny noses.

There are some more Benadryl treatments for dogs. It is very helpful in case of food allergies. If your dog is bitten by insects or bees, a dose of Benadryl is needed for relief. Some vets suggest to giving an amount of Benadryl before vaccination. It is given for preventing some vaccine reactions. For resolving motion sickness and brain or nervous system, Benadryl is very soothing. It takes 30 minutes to take effect against it.

Benadryl Dosage for Dogs

How much Benadryl is safe for your dogs? It is a common question for the dog owners. You should be very aware of it. Benadryl dosage for dogs is very low. Finding the right Benadryl dose is very crucial. For this, the suggestion of a vet is much helpful. Usually, it is recommended that a very little amount of Benadryl is safe for dogs. The amount is generally 1mg for 1lb body weight every 8 hours. If your dog is 15 pounds, you should give 15mg of Benadryl 3 times a day.

Benadryl can be given in liquid form. The dosage of liquid Benadryl for dogs is 0.4 ml for 1lb of the dog’s body weight. For example, a teaspoon can hold up to 5 ml. And it should be served 3 times a day. The dosage of Benadryl might change according to the need of the dog. But this dosage must be fixed by the vet only. The dosage might be double with the demand of the situation. Giving the medicine in empty stomach is fine for dogs. But, Benadryl with food can help prevent drooling and vomiting. Most dogs dislike Benadryl for the taste of liquid form. So, it is better to give Benadryl tablets to them.


Benadryl is also available in the form of cream, gel, stick or spray. These forms usually contain 1% Diphenhydramine. You can  apply this 2-3 times a day. Many people forget that they are using medicines when applying topical products. But even though your dog absorbs a little, applying too much can lead to overdose symptoms. It may cause if you had used too many tablets or too much liquid. This danger can soon add up if you have also given your dog Benadryl tablets, liquid or other antihistamine products. You should avoid itch cooling gel as it contains camphor. This element is very poisonous to dogs.

Benadryl Side Effects in Dogs

Benadryl is helpful for dogs but it has some side effects too. The FDA has not approved Benadryl as safe for dogs yet. But it is very common for the vets to recommend it. These effects may happen within an hour or even 30 minutes. Some common side effects are drowsiness, rapid breathing, faster heart rate, Drooling and depression in some cases. Some rare side effects are also seen like vomiting, loss of appetite and allergic reaction.

The diphenhydramine in Benadryl is necessary for dogs. But some dogs with heart disease, angle-closure glaucoma, hyperthyroidism and prostate enlargement could react badly to diphenhydramine. You should avoid using it with other anticholinergic drugs as it could lead to symptoms of toxicity. Besides, it is better to avoid giving Diphenhydramine at the time of pregnancy. You should be aware of this while nursing your dog.

Benadryl dosage

Overdose of Benadryl

Benadryl is helpful for dogs in some cases. But if the Benadryl dosage for dogs is over than the required amount, it will be very dangerous. Overdose symptoms may include muscle tremors, breathing difficulties, extreme fatigue, confusion and high temperature. These could lead to circling, seizures and disorientation among signs. If you suspect an overdose, seek immediate veterinary care. Diazepam and barbiturates are unsuitable for treating seizures by overdose. Instead, you can give the injection of Phenytoin for this.

Benadryl is a common medicine to solve some of the dogs’ problems. It is very much helpful in some cases. But always have to be more careful of using it obeying every instruction. Thus, you will follow proper Benadryl dosage for dogs to keep them safe. So, it is very important for dog health but you must use proper dosages when you will use Benadryl for your dogs.

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