Readers Respond: Has your pet ever had a bad reaction to a medication or topical treatment?

The first thing to do is call your vet as soon as possible. It is a good idea to write down any details you can remember - the time and method of administration, what signs were noted, and what time(s) those signs appeared.

Please report your pet's adverse reaction, either via your veterinarian or yourself. It is important to report these events to provide data and alert other veterinarians, regulating agencies and ultimately, to protect other pets.

Share your story here

adverse reactions

I took another of my cats to the vet. She is 18. She was given antibiotics (£42). He recommended frontline flea treatment at the cost of £22 and told me it could only be bought through a vets. He also assured me it was safe as it is used on 2 day old kittens. I have 5 cats and treated them all using the minimal amount, as I really do not like pesticides/chemical use on animals. I told the vet this but he reassured me it was safe. My cat Wesley seemed unwell on Friday, walking with a wobbly gait. I put him in his box on his blanket, he curled up but was not interested in eating or drinking. As I don't drive I started making arrangements for a friend to take us to the vets when I went back to the box he was dead!! Initially I thought well he is old and we buried him. We were all upset but I was even more upset next day when a friend told me her cats fur had dropped out after using the Frontline treatment. I googled information on the product.

—cattycats

Promeris

I have a chocolate lab, about 90lbs, he has had NO problem with Promeris. It is the ONLY thing that keeps his mange at bay!!!!

—Guest Paula

Promeris reaction

Shiba Inu 6 years old given May 4, 2012. Lethargic, drooling, stagering, high as a kite! This is her second dose. Gave her a dose w same reaction a year ago- Vet said then after I notified then of the bad reaction first time it was impossible to be from Promeris. Decided to try again - same reaction. I feel like I'm killing my dog-watching her suffer.

—Guest Cyndee

Promeris caused tremors

Day 1 I saw mild tremors when my 2 yr old ACD (Blue Heeler) went to bed with us. Didn't think much of it (thought she was dreaming or something), but the next day they were much worse. Vet said that Collie breeds and Heelers were sensitive to the active ingredient... Now we have to pay for injections of the antidote every 4-6 hours! Thanks for a wonderful product Promeris!

—Guest Jason F

Severe reaction to frontline for cats

I am currently abroad and my boyfriend gave our cat his frontline which we have used on several occasions. This time he has had a severe reaction to it. He is having respiratory problems amongst other things. My boyfriend washed it off within 2 hours of applying it, when he noticed the change in him. It's been 48 hours, within that time he has been to the vets twice and received steroid and antibiotic treatments. Has anyone else's cat had respiratory problems and recovered. I'm so scared and just hoping he will get better asap. My boyfriend said he has drank water and been to the toilet since but now I'm worried about kidney damage/failure.

—Guest Sarah D

Severe reaction to frontline for cats

I am currently abroad and my boyfriend gave our cat his frontline which we have used on several occasions. This time he has had a severe reaction to it. He is having respiratory problems amongst other things. My boyfriend washed it off within 2 hours of applying it, when he noticed the change in him. It's been 48 hours, within that time he has been to the vets twice and received steroid and antibiotic treatments. Has anyone else's cat had respiratory problems and recovered. I'm so scared and just hoping he will get better asap. My boyfriend said he has drank water and been to the toilet since but now I'm worried about kidney damage/failure.

—Guest Sarah D

Promeris Fried my Dog

I used Promeris once in January and then in February. The second month I used this product it Fried my Labs back. So bad, that after $600 in vet bills and 4 visits so far, she still has severe burns and scabs that will not heal. The vet says it was due to Promeris. I called the manufacturer and they seemed indifferent about the side effects. I advise NO ONE use this product on their family pet. The company denies it is from their product and refuses to accept any financial responsibility. They are a bad company and should be taken off the market. My poor dogs suffers every day because of PROMERIS. BAD BAD Product, Buyer Beware !!!

—Guest Matt in Orlando

promeris

My 14 year old dog had a convulsion 24 hours after the first dose of Promeris, which I measured and dosed her by weight. My 4 other dogs had no problems at all. I didn't think it was due to the Promeris until the second time it happened after a second dose a month later, again a convulsion 24 hours after dosing, this time the convulsion was much worse, The vet told me he didn't think it could be the Promeris as I had been so careful about the dose, and that more likely she had a brain tumour. She is fine now, well and happy.I will never give it to her again!!!

—Guest natalie

Bad reaction to Frontline Plus

My moms dog became very anxious and twitchy after having the flea and tick collar on him for about 3 weeks. His appetite is diminished and he is now constantly thirsty and dehydrated. He is not his normal happy go lucky self. After reading everything about Frontline Plus I took the collar off of him and gave him some Benadryl. I will see how he recovers from this. I will not ever, ever put this on him again.

—Guest Etheena

Promeris Reaction

3 hour after using Promeris ( by a vet ) on my ( 6 years old 60 KG) dog she was dizzy and hardly walking for at least 30 hours , after washing her very good with water and soap she started to became ok again. now it is 72 hour after using the Promeris and she is almost well again. i understood that this is a known adverse reaction but i'm sorry that i didn't know it before . i felt like i poisoned my own dog

—Guest hilik

promeris

I administered promeris to my 6 year old min pin - within 2 hours she collapsed. She couldn't walk and now has seizures she is now in kidney failure, home from animal hospital on a IV I am sick over this.

—Guest judy

yes, bad reaction to Promeris

I discovered this weekend that Promeris isn’t for my pit bull. I used the third dose for demodex on her last Wednesday morning. I was concerned about using it every two weeks because it says on the package to only use it once a month so I checked with 2 other vets besides the one that prescribed it before I used it. I didn’t notice any thing unusual the first two times I used it but when I came home from work Thursday Cheyenne was moving kind of slow, not very playful and mostly just sleeping. She didn’t even care that I went outside without her. (way not normal). Well Friday was the same and Saturday I gave her a bath before I took her to the boyfriend' house. I thought she was better but we noticed she was starting to drool, stagger and run into the wall. The doorway, chairs. Etc. I gave her a treat and she dropped then started vomiting. Saturday evening is when it clicked that it started after the Promeris so we googled it and lots of stories just like hers. never again will i use

—hausenc

Swelling and Heat at Vaccination Site

Every year my dog's back swells a lot and gets hot the day after her vaccinations and it stays there for several days. It was worse this year. She is a 10 yr.old Bichon.

—Guest pat

pet reaction to topical med

My 12 yr. old cat (Half Persian and Half Russian Bleu), Had a reaction to a flea collar. His hair began coming out in big clumps on his neck with 36 hours! He was jumpy and itchy, too. My 6 yr old calico went all jumpy and antsy as soon as I put one on her. I got them at Wal-Mart. I'm not sure what the brand name was, however. My 12 yr. old cat is still not healthy. It's been 2 and a half months!

—Guest Joy

mercy

Yes, with promeris. 72 hr after dose my dog could not get up, she would not respond. I had to hand feed her a little bit of food and water. I am taking her to the vet. A friend of mine also has a dog who also 72 hrs later had vomiting, diarrhea and could not get up.

—Guest mercy