Advantage Flea Medication Allergy in Cats

I have used Advantage Flea Medication on my DSH cat for the 8 years I have had her. (She is now 9 years old.) I never noticed any reaction before. This time she became a little lethargic. That has passed but she has a red irritated patch where I applied the medication. I have washed off the area with warm water. Should I apply any antibiotic or cortisone cream to the area? Is age a factor? Is she too old for this medication? Thanks.

My 3 adult cats over 9 pounds each are all vommiting and one is coughing 24 hrs post application. Is this common and should I be worried? Advatage flea treatment was reccomended by my vet as they are indoor cats only and she said they did not need added meds for tick prevention

Hello, I applied flea medication to my 3 1/2 old cat yesterday night and he vomited twice this morning. Not very much vomit, but I am wondering if I should worry. He seems fine otherwise and is eating normally. Some of the liquid dried on his fur when he jerked doing the application so I'm wondering if he was able to lick some off of himself. Should I wash off the dried up liquid on his fur? Thank you.

Hi,
We have a 16 week old kitten and applied advantage on advice about a week ago. She is now very lethargic, has diarrhea and is quite off balance. She also has a very bloated belly that sounds very upset, but still seems happy to eat/drink. Is this potentially a reaction to this medication, or should I be worried about something else. We have 2 other older cats that are fine.

I have used Advantage for many years on my 15 year old Himalayan Persian cat. No other flea medicine has ever worked. But, the last time I used it, he developed a bald, raw spot, right where I put it and about the same size as the wet spot from it. Also, two other small spots nearby. He has never had this before. It scabbed up and I removed the scabs and put Bacatraycin on it. It's been very slowly healing, but still bald.
My questions are: Should I remove scabs after they are dry? Will the fur grow back?
But mostly, can I try putting Advantage on him again? I need to keep him flea free as they attack him so badly now that is old and he picks them up so easily on the daily walks he insists we take him on. Is he now allergic to Advantage when he wasn't before?

I gave my 6 LB cat/kitten (10 weeks old) some Bayer Advantage II Flea Prevention Large Cats, over 9 lbs. I only intended to give her half of the tube but it poured out and i think i gave her too much. Also, I put it on the back of her neck but she was able to lick it. Not even two hours later she had violent diarrhea and its not one day later and she still has it. Should I take her to the vet? Is she going to die? She is still eating and drinking fine and acting fine. Please help.

I just put flea medicine on my cat and he’s darting across the living room back and forth. If I put the flea medication a little higher than the shoulder blades is that going to cause nerve damage?

My cat has fleas. I use advantage flea medication but I notice that she licks herself (all over) until her hair comes off and she has open areas on her body now. Is this an allergy to the medication or is it something else? Before getting the flea medicine, the doctor told me she was allergic to fleas so that is when I started to use advantage.

I applied flea and tick medicine to the back of my cats neck, and i thought she wouldnt be able to reach it. Now shes drooling a little bit and jist laying down in her litter. (I just cleaned it out) should i wash it off her and try something else,or is this normal for cats? I dont have a cone or anything to put around her and im worried she might lick herself and get sick.? What should i do

I believe my cat Bella had a horrible allergic reaction to Advantage II and she was misdiagnosed by the emergency room veterinarian. Here are the details:

Bella had many of the symptoms of an allergic reaction to Advantage; lethargy, vomiting, dehydration, failure to eat or drink, excessive drooling and foul breath. I contacted the 800 number on the Advantage box and was told she probably licked and ingested some of the Advantage, but the symptoms should go away within a short period of time.

Unfortunately, the symptoms became worse, so I took Bella to the emergency room with the box of Advantage. I was certain Bella had a severe allergic reaction to it. The doctor discovered ulcers on Bella’s tongue, gums and the roof of her mouth. The doctor said the wounds in her mouth were consistent with an "electrical cord bite." I was stunned.

I adopted Bella from a shelter six years ago when she was about three years old. In six years, not ONCE did she have any interest in electrical cords, let alone bite one. It might have LOOKED like an electrical burn, but what are the odds that Bella burned her mouth on an electrical cord, the exact same day I gave her Advantage for the first time?

I insisted it wasn’t an electrocution, but the doctor insisted it was. She gave Bella an injection of Cefovecin and a dose of Buprenorphine. I was given SQ fluids (prescribed 100 ml/day), additional Buprenorphine, and Sucralfate to administer at home. That’s it! The doctor also failed to hydrate Bella during her examination.

When I returned home, I read the medical info about Sucralfate and I still have no idea why it was prescribed for ulcers in the mouth. I also looked at every electrical cord in Bella's room and not one of them had bite marks.

The next day I contacted a home health doctor for a second opinion. He came to my home and immediately agreed with me. He diagnosed a “chemical burn” in Bella’s mouth; the result of a severe allergic reaction to licking the Advantage. Bella was also severely dehydrated (5+ %). The doctor had to administer 400 ml of subcutaneous fluids! He also gave Bella a mix of Staydol, Baytril, Vetalog, Pepcid and Vitamin B-12 through the SQ IV. I gave Bella a bath and a saltwater mouthwash, which I squirted around her gums and tongue with a syringe.

Shortly after the doctor left my home, Bella was sipping water for the first time in two days. She also began to purr!

As of this morning, Bella is so much better. She still won’t eat anything, but she did sip on some chicken broth. I also noticed the tip of her tongue is already turning pink again and there is no more drooling or mouth odor. I will continue to administer the doctor’s prescriptions and give Bella SQ as needed.

I’m furious about the original misdiagnosis. I paid $250 for the emergency room visit and meds. Then I had to pay another $257 for the second opinion and treatment. I am curious to know if there are any other cases where a pet received chemical burns from a flea killing topical application? I also know hives are a side effect of Advantage. Is it possible for a pet to get hives in their mouth?

Thank you.

My cat Lily is 1 and 1/2 year old. She recently got fleas coz she goes out even though thts only for short times but many times in a day. I applied advantage ll last Friday like 7 days ago and she still has 1 or 2 semi dead fleas that she is dropping here and there. Also she started scratching only her neck and head but not right after advantage. Thts like 3-4 days ago and she still goes out but I limited it which she is not liking. When she had fleas and I didn't apply anything she was scratching all over her body. Now only head and neck and I'm sad to see her like this. I m thinking to give her bath but I'm scared of that Medication might wash away? Kindly help me

y cat had an allergic reaction (redness, itching, sores on neck) to a %Seresto Flea collar by Bayer. The active ingredients in the collar are Flumethrin 4.5% and Imidacloprid 10.0%. Is it safe to use Bayer Defense Care Flea Protection topical treatment, with the active ingredient of Imidacloprid 9.1% on her?

Hi I gave my 14 week kitten a 4x advantage spot on flea treatment which the Breeder gave me & she has been extremely lathargic now for 2 days , sleeping all day and night only moving to eat & drink & to use the litter tray