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Benadryl for Dogs During Fireworks, Does it Work?

Yes, Benadryl can help a dog feel calm if he’s scared of fireworks or thunder. It is OK to give a dose of Benadryl to your dog to help him feel more relaxed. (More on the proper dosing below.)

Obviously, you should consult with your dog’s veterinarian before trying any type of medication, including Benadryl, to make sure it’s OK for your unique dog.

Dog Benadryl info in this post:

Benadryl for dog fireworks anxiety

Benadryl can “gently calm a pet with mild to moderate storm anxiety,” said Dr. Danel Grimmett, a veterinarian with Sunset Veterinary Clinic in Edmond, Okla.

I emailed her in the past for a post about medications for dogs during fireworks.

Benadryl for dogs anxiety

Grimmett said in addition to storm anxiety or fireworks anxiety, Benadryl is often used for dogs that have mild anxiety or motion sickness in the car. Of course, she recommends you consult with your dog’s own veterinarian before giving Benadryl.

*Get my tips on how to help a dog who’s scared of fireworks. Click Here.

If you think your dog needs something stronger than Benadryl, see this post on prescription medications for dogs during fireworks.

How much Benadryl should I give my dog for fireworks anxiety?

Benadryl (diphenhydramine) is an over-the-counter medication for people. It generally comes in 25mg tablets. You can buy it at pretty much any drugstore or grocery store.

Many veterinarians recommend Benadryl for dogs that have itchy skin or to calm a dog with mild anxiety.

Benadryl for dogs during fireworks

Dog anxiety Benadryl dosage

The dose for dogs is not the same as the dose for people, so you can’t go by the label. It’s best to ask your dog’s vet what the proper dose should be.

Multiple vets have told me (for my Lab mix Ace) that the proper dose of Benadryl for dogs is generally:

1mg per 1 pound of body weight 2-3 times per day.

For example:

  • A 25-pound dog would get one 25mg Benadryl tablet 2-3 times per day.
  • A 50-pound dog would get two 25mg Benadryl tablets 2-3 times per day.
  • A 75-pound dog would get three 25mg Benadryl tablets 2-3 times per day.

I tend to give the lightest dose possible.

My dog Ace is 65 pounds, so I just give him the dose recommended for a 50-pound dog. But this is for itchy skin; Ace doesn’t have noticeable anxiety around thunder or fireworks.

Will Benadryl help a dog during fireworks?

Does Benadryl actually calm a dog during fireworks?

Whether or not Benadryl will help your dog feel calm during fireworks depends on:

  • the unique dog
  • the severity of the dog’s anxiety
  • when the anxiety medication is given to the dog

I recommend you attempt to give your dog Benadryl for anxiety about 45 minutes before you expect to hear fireworks. That way the medication has time to help your dog feel calm before the fireworks begin.

Dog scared of fireworks

Calming dogs down once the actual fireworks have already started is a lot more challenging than helping a dog feel calm before the fireworks begin.

If your dog has severe anxiety (and I mean severe!) around fireworks or thunder, see this post for some additional ideas.

I would like to hear about your experience in the comments.

How long does it take Benadryl to work for a dog’s anxiety?

It’s probably different for each dog, but in my experience Benadryl begins help a dog feel more relaxed in about 30 minutes.

Keep in mind, it might not be obvious to you whether or not the Benadryl is actually helping your dog feel calm. Sometimes it’s hard to tell.

Ace the black lab mix not scared of fireworks

A couple of warnings about Benadryl for dog anxiety:

1. Benadryl dosage for dogs: Ask your vet what the proper dose should be for your dog if you’re not sure! (Above, I listed the Benadryl dosage I’ve been told by several vets.)

2. Read the label. Note that some medications might come in 50mg tablets vs. 25mg. Make sure to read the label.

3. Don’t give your dog cold medicine. You don’t want to give your dog Benadryl (diphenhydramine) if it’s mixed with cold medicine. Things like Tylenol (acetaminophen), Advil or Sudafed are generally not recommended for dogs and can be harmful. If you have questions, ask a vet.

Will Benadryl make my dog sleepy?

Benadryl does make a lot of dogs sleepy because one of the side effects of Benadryl is drowsiness.

If your dog is feeling sleepy from the Benadryl, he should have an easier time relaxing and resting while fireworks are going on outside. Benadryl can also help calm a dog while traveling.

So yes, it’s definitely OK to try to give your dog Benadryl to try to help calm him down.

Alternatives to Benadryl for dogs

What else can I give my dog to calm him from fireworks or thunder?

Besides Benadryl for dogs during fireworks, there are a couple of natural remedies you can give to a dog to try to relax them:

Rescue Remedy. This is a product made of flower material that is designed to naturally calm a dog’s nerves.

Thundershirt. A ThunderShirt is designed to gently wrap around the dog’s body in order to help him feel less anxious. You could also try a ThunderShirt in addition to giving your dog Benadryl.


Dog Appeasing Pheromones (DAP). ADAPTIL is a brand that mimics the natural dog appeasing pheromone dogs know from birth.

These help a dog feel calm in stressful situations like during thunder, travel or fireworks. ADAPTIL is available as a diffuser (wall plug-in), a collar or a spray. I recommend the spray.

Other dog fireworks anxiety medications

If your dog has severe anxiety around fireworks or thunderstorms and Benadryl does not seem to help, then you may want to consider a prescription anxiety medication from your dog’s vet.

There are prescription fireworks anxiety medications available for dogs such as Diazepam (Valium) and Acepromazine.

Diazepam, or valium, is a sedative and muscle relaxer that should help your do feel calm during fireworks.

Tranquilizer for dogs fireworks

One prescription dog anxiety medication is called Acepromazine.

Acepromazine should always be administered under the direct supervision of a veterinarian as it is very powerful, according to Grimmett. She recommends you do not leave your dog home alone after giving this tranquilizer.

This anxiety medication has not been proven to work in removing the dog’s fear, according to 1-800-PetMeds, a pet pharmacy that carries Acepromazine. The drug will, however, likely make the dog calm.

Make sure to ask your vet questions about these drugs and the potential side effects so you can make the best decision based on your dog or puppy’s anxiety level during fireworks or storms.

What has helped your dog’s anxiety around fireworks?

In the comments, I’d love to hear what’s worked for your dog.

My dog Ace does not seem to be fazed by loud noises, thankfully. My young pup Remy gets a little nervous and hunkers down on his bed or tries to get as close as possible to us. Read out our 4th of July with dogs routine here.

*Get my tips on how to help a dog who’s scared of fireworks. Click Here.

Products to Help Dogs With Fireworks:

  1. Thundershirt:
    The Thundershirt is worth a try in addition to other training methods and potentially anti-anxiety medication.
  2. Dog Appeasing Pheromones:
    Adaptil releases specific pheromones that naturally appease and calm dogs. Available as a diffuser you plug in to the wall, a collar or a spray.
  3. A white noise machine:
    An actual white noise machine works so well to block out the noise. You could also try a loud fan and keep music or the TV playing.
Benadryl for dogs during fireworks

*This post contains affiliate links.

Related articles:

Medication for dogs during fireworks

Does Rescue Remedy really work?

Thundershirt reviews

What to do when your dog is scared of fireworks


Saturday 4th of July 2020

Oh, I forgot to mention, their vet is well aware they get Benadryl for fireworks and my that my chihuahua occasionally gets it for a coughing fit that lasts too long.


Saturday 4th of July 2020

I’ve been giving my little dogs Benadryl during fire works for years. My Small Rat Terrier is terrified and my chihuahua is very frightened. Benadryl has always worked. It doesn’t sedate them, it merely calms them and they don’t react as strongly to the fireworks. I also take them into the bedroom, stay with them, close the windows, and turn up the tv a bit. It seems to help drown the worst of some of the explosions. I live in a neighborhood where my neighbors compete for a week or so to see who can produce the loudest explosion. A couple of years ago, I am convinced one had dynamite.


Sunday 28th of June 2020

Our beagle used to hide in my mom’s dark closet. So, my mom made a comfy space for her. We now have a rescue that’s an Italian Greyhound/Chihuahua mix. She’s so full of anxiety when it comes to fireworks amongst other things! Speaking with a vet specialist we decided to do what is best for her. So, we’re trying Gabanpentin in lowest dose. So far so good!!

Karen Baines

Thursday 4th of July 2019

Thank you all, each one of your comments have helped me and I will let you know what worked for Denver.

Julie Mell

Thursday 4th of July 2019

My dog shivers and shakes at the sound of a boom. He runs and shakes in the back far corner of my dark closet or daughter’s room. It’s heartbreaking to watch and nothing calms him. This year I’m going to try calming home with benadryl and play loud calming music to try to mute out the sound. Btw- my dog is a 65 lb. husky/wolf/hearder mix.