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What are K9 Advantix Allergies?

K9 Advantix is a popular waterproof, topical agent used to kill and prevent fleas and ticks from infestation on dogs. This product is applied to the dog once a month. K9 Advantix is available in two varieties: the original K9 Advantix and K9 Advantix II. There are differences between the two varieties, as the original K9 Advantix is effective in the prevention and killing of ticks and fleas; however, this original type does not kill the eggs, pupae, and larvae of either pest. In order for K9 Advantix to be effective, the ticks and fleas must hatch first before the product can kill them. 

K9 Advantix II will eliminate the pests in every stage and is highly effective at repelling these pests before they make contact with the coat of the dog. K9 Advantix II also works against mosquitoes, flies, and lice.

Permethrin and imidacloprid are two powerful ingredients in the K9 Advantix products. K9 Advantix II also contains the repellent pyriproxyfen. Upon application, dogs may have side-effects from either type of this product.

K9 Advantix allergies in dogs occur when dogs are exposed to the chemicals within K9 Advantix or K9 Advantix II. The chemicals within the products cause an adverse reaction within the dog’s body, which is marked by a variety of symptoms.

K9 Advantix Allergies Average Cost

From 416 quotes ranging from $200 - $500

Average Cost

$250

Symptoms of K9 Advantix Allergies in Dogs

If your dog is having a reaction from K9 Advantix or K9 Advantix II, the symptoms may vary depending on your dog’s coat, size, and breed. K9 Advantix should not be used on dogs that weigh less than four pounds. Symptoms of an allergic reaction to this product may include:

  • Sensitivity at the application site
  • Skin irritation
  • Scratching the skin
  • Discomfort
  • Redness
  • Gastrointestinal discomfort
  • Lethargy

Types

K9 Advantix and K9 Advantix II contain different types of ingredients to control fleas and ticks. The varying ingredients are:

  • Imidacloprid
  • Permethrin
  • Pyriproxyfen
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Causes of K9 Advantix Allergies in Dogs

Causes of K9 Advantix allergic reactions begin with the application of the product onto your dog’s skin. Specific causes include:

  • Oversensitive immune system
  • The increased production of antibodies to fight the allergen
  • Immune system identifies the solution as being harmful to the body
  • In this process, chemicals are released to cause the reactions
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Diagnosis of K9 Advantix Allergies in Dogs

If you suspect your dog is having an allergic reaction to K9 Advantix or K9 Advantix II, it is important to make an appointment with your veterinarian. Once you take your dog to the veterinarian, the medical professional will assess your dog’s symptoms. Your dog may show a variety of symptoms, and the severity may vary depending on the allergic reaction of your companion.

The veterinarian will ask you questions pertaining to everything “new” you have introduced into your dog’s life. He may ask you about various foods, allergens within the home, or anything that you have recently applied to your dog. With those questions, you may come to the conclusion that you recently applied the flea and tick treatment.

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Treatment of K9 Advantix Allergies in Dogs

The veterinarian will treat your dog symptomatically. Symptoms depend on your dog, as every dog may react differently. Treatment methods may include:

Fluid Support

If your dog is having a gastrointestinal reaction and has been vomiting or has had diarrhea, the veterinarian may give him fluid support. Fluid support will rehydrate him; fluids may be given intravenously or subcutaneously underneath the skin, usually at the neck area. The amount of fluids given depends on your dog’s size, species, age, and the severity of dehydration.

Decontamination

Decontamination of your dog’s fur and skin is another treatment method to rid your dog of the flea and tick solution. The veterinarian will cleanse the dog with the detergent of his choice and thoroughly rinse your dog. 

Medication

Depending on your dog’s condition, the veterinarian may give your dog medication to lessen the symptoms. Medications may also help detoxify your dog’s system.

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Recovery of K9 Advantix Allergies in Dogs

Once it is determined that your dog has an allergy to K9 Advantix or K9 Advantix II, the key to recovery and management is to remove the product from the dog and to stop using the product in the future. Once your dog recovers from this allergic episode, the prognosis is very good.

When you take your dog home, your veterinarian may give you directions on how to care for him in terms of rinsing and cleansing him and applying any topical solutions, if given to you by the veterinarian.

In terms of flea and tick treatment, there are alternatives if your dog is allergic to the K9 Advantix products. Many dog owners seek out natural and holistic flea and tick treatments if their dog is allergic to the commercial brands. It is very important to apply a tiny bit of the solution to only one small section of your dog’s body to see if he has any reaction before you continue to use the product.

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K9 Advantix Allergies Average Cost

From 416 quotes ranging from $200 - $500

Average Cost

$250

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K9 Advantix Allergies Questions and Advice from Veterinary Professionals

Need pet health advice? Ask a vet

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Ask a Vet

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chihuahua, dachshund, jack Russell mix

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Seven Years

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Unknown severity

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1 found helpful

pill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filled

Unknown severity

Has Symptoms

Little Tired, Vomited After 3 Day Of Application

He runs and chases squirrels when on his walks but when at home he seems tired and does not have a lot of energy. He hasn't been eating a lot either and just vomited after 3 days of application of new flea medicine. Do I need to take him to a vet or should I just give him a bath and see if he does better.

Aug. 2, 2020

Owner

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Dr. Sara O. DVM

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0 Recommendations

Hello, So sorry to hear about your dog. You can start with giving him a bath. This should start to help pretty quickly. If he continues to vomit and act lethargic, it would be best for him to see your vet. Good luck.

Aug. 2, 2020

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Poodle mix

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Two Years

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Unknown severity

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0 found helpful

pill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filled

Unknown severity

Has Symptoms

Scratching

Hi, I gave my 7 pounds jack russel poodle mix advantix II yesterday. Since yesterday she is shaking her head, scratching and even when walking she leans her head towards left and won’t stop shaking her head. We didn’t change anything other than applying advantix II topically. Can you please help? She is definitely not feeling herself.

July 20, 2020

Owner

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Dr. Sara O. DVM

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0 Recommendations

Hello, Some dogs can be allergic to topical flea and tick medications. She can also have an ear infection causing this. If she is not improving, it would be best for your vet to look at her. Many times we recommend washing the flea and tick product off with soap. This may help your dog feel better. It not I would recommend that you see your vet. I hope that your dog starts to feel better soon.

July 20, 2020

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Miniature Australian Shepherd

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Five Years

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Unknown severity

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0 found helpful

pill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filled

Unknown severity

Has Symptoms

Whinny And Rolling Around On The Floor

This is 2nd treatment, he keeps whining and rolling around on the floor.

July 20, 2020

Owner

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Dr. Michele K. DVM

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0 Recommendations

Thank you for your question. If this behavior happened after you put the Advantix on, it would be best to wash the product off right away and monitor him. If he continues to have this problem, having him seen by a veterinarian would be a good idea. They will be able to examine him and see what might be going on, and give him treatment if he is having a reaction. He may do better with an oral form of flea and tick prevention, and your veterinarian can help you with that, as well. I hope that all goes well for him!

July 21, 2020

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Kato and Papi

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Shiba inu and papillon

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3 Months

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Mild severity

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1 found helpful

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Mild severity

Has Symptoms

Itching Vomiting

I gave my 3 month old shiba Inu and 5 year old papillon k9 advantix the night of two days ago and just this morning the both of them have started itching and biting themselves nonstop!! We’ve used this product on the both of them before. We started to switch my shibas food last night and he threw up his food. Then this morning I woke up to him gagging but he never threw up. That was when both dogs started to itch and I realized that it was probably not the foods fault but the k9 advantix. Help?

Aug. 22, 2018

Kato and Papi's Owner

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Dr. Michele K. DVM

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1611 Recommendations

I'm not sure that the Advantix caused this problem, as it would be very strange for both dogs to suddenly have a reaction to a drug that you have used before. It would be a good idea to have them examined by a veterinarian to see what is causing the itching and see how best to treat them, as it is difficult for me to comment without seeing them. I hope that all goes well for them.

Aug. 22, 2018

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Scooter

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Shih Tzu

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8 Years

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Moderate severity

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0 found helpful

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Moderate severity

Has Symptoms

Muscle Tremors
Lethargy
Loss Of Appetite
Loss Of Appetite,

We recently rescued an 18-lb.,8 yr old shihtzu that was treated with K9 Advantix II the day we brought him home. He seemed ok for the first few days, but as time has gone on, he has stopped eating,seems lethargic just wanting to lay in his crate/sleep all day. Could this be caused by the K9 Advantix treatment? It was a week & a half ago that he was treated with Advantix, & these symptoms have begun just over past few days. Before this, he enjoyed walking, playing fetch, & was eating ok. Please help!! Thank you.

Aug. 8, 2018

Scooter's Owner

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Dr. Michele K. DVM

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1611 Recommendations

It would seem strange to me that Scooter would be fine and then start to show these signs if it were related to the Advantix. It would probably be a good idea to have an examination with a veterinarian so that they can see what his health status is and if he needs any treatment. I hope that all goes well for him.

Aug. 8, 2018

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Harden

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Miniature Schnauzer

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7 Months

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Moderate severity

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0 found helpful

pill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filled

Moderate severity

Has Symptoms

Itching

I first applied this product in one area on the back of his neck, at the time my schnauzer’s hair was a little longer. I had no problems. Now the second treatment , his hair is cut shorter and I applied the treatment as directed on the box. My poor boy was up scratching all night I had to give him a bath at 3 in the morning . For those that had this experience, did you try a different medication ?

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Doodle

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Havanese

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8 Years

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Moderate severity

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1 found helpful

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Moderate severity

Has Symptoms

Twitching, Fever, Red Eye, Itchy

I have never tried Advantix and to my embarrassment never read about topical treatments before purchase. Puzzled by my dog's twitching and shaking like a leaf, I began to read about Advantix, and it seems like my dog is having an allergic reaction to those pesticides. After reading more about various anti-parasite treatments, I could not believe that the ingredients (carcinogenic neurotoxins) are sold and marketed freely as a safe products. And if anyone tells you that it is harmless, ask them to demonstrate that point by putting that treatment on their child every month. Several of my neighbors' dogs have died of cancer and I blamed that on the pesticide-treated grass, but Bayer and other corporate giants may have been the merchants of death instead.

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Loki

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Morkie

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3 Years

pill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filled

Fair severity

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3 found helpful

pill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filled

Fair severity

Has Symptoms

Lethargy
Twitching
Biting
Scratching
Tightening
Locked Up

I tried K9 Advantix for the second time on my 3 (almost 4) year old Morkie. She is 15 pounds so I used one dosage of the Medium dog kind and immediately she started developing this constant twitching where this was applied in the 3 areas on her back and her back would lock up right and hard. The next thing she’s completely twitching and not able to sleep because of it unless I was massaging her back or the added the weight of my arm was on her. I called the Emergency Bayer phone number as recommended on the box and they told me my dog was experiencing a neurological reaction from the two toxins in this product. They told me she was experiencing a pins/needle sensation and it’s a temporary paralysis of the sub dermis skin layer and to bathe her in Dawn dish soap immediately to remove the chemicals with the detergent in Dawn soap. She went through these side affects for 4 full days but I’m happy that I didn’t lose her or come out with long term affects.

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Wish

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Staffordshire Bull Terrier

dog-age-icon

5 Years

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Moderate severity

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1 found helpful

pill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filled

Moderate severity

Has Symptoms

Facial Paralysis

On September 13 very early morning we applied k9 advintix which we’ve have always used before. By late after noon on sept 14 we were rushing my dog to the vet. Not sure if she had a stroke or not. Turns out she has facial paralysis (Bell’s palsy). She can’t blink her right eye and her right side of her mouth is very droopy. Dribbling water when drinking and drooling. Now due to the potential dryness from not blinking we must apply eye lubricant 4 times daily. I’m not sure if this was a freak accident or possibly related to her k9 advantix treatment.

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Sazzy & Chloe

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Maltese, Yorkie

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8 Years

pill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filled

Serious severity

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2 found helpful

pill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filled

Serious severity

Has Symptoms

I used this product for the first time after Frontline stop working for my two dogs. They both started acting agitated and restless. I talked with a Bayer representative who told me to bath them with Dawn soap twice, wasted my time bathing them. The reaction from the Advantix II was still there. Called back to Bayer, now the rep said the symptoms would go away in 72hrs after the wash with Dawn, but I was told before the wash the tingling would go away in the same 72hrs and if there were any more reactions I should see my vet. Your product caused these problems and now cause me to spend time and money dealing with my distressed dogs. These Bayer reps are just reading a script and allowing you to vent your frustrations. This product needs to be taken off the market!!! I will be calling to report this product, as we all should do!!!!!!!!!!!!

K9 Advantix Allergies Average Cost

From 416 quotes ranging from $200 - $500

Average Cost

$250

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