I used Hartz flea medicine on my cat and it gave her a seizure

The other day i use hartz ultra guard, onespot flea egg and flea larve on my cat. then today she was laying in the floor while i was on my bed and she stood up and started meowing verly loud, and i looked at her and her head was jerking from side to side and she couldnt keep her balance. i was so scared i didnt know what to do, i just made sure she wasnt hitting anything with her head. after about 5 mins she stoped and was fine, i wasnt about to risk anything so i called the vet. They told me to bring her in for them to look at her immediately. when i arrived the first thing they noticed was where she had the flea medicine on her and asked what brand it was, i didnt think it could have been the medicine so i couldnt remeber the brand i had used. but after the check up the vet said to make sure i washed her with dawn then again with cat shampoo. when i got home and gave her the two baths i looked at the flea medicine and it was hartz..so i looked the name up online and i noticed that i wasnt the only one that has had this problem with this brand…………so thanks to hartz i had to suffer thru watching my cat have a seizure and not know what was happening or what to do, and pay a $89 vet bill

 heres a picture of Kitty before the hartz problem

 

ULTRAGUARD ONESPOT SEIZURE

I recently used Ultraguard Onespot Flea & Egg Treatment by HARTZ. It says it’s for cats and kittens.My kitten immediately swung her head around and began licking at it incessantly. Kittens can reach around and lick between their shoulder blades.  Within 2 hours of applying it my 12 week kitten began to curl up and roll all over, lost complete muscle control, she couldn’t stand, she’d scramble backwards then roll around repeatedly. She fell if she tried to get on her feet.  This went on for 20 minutes then she looked horrible and was very weak. It happened a little more that evening and then I believe that was it. She was just such a mess afterward and so lethargic. It took a few days before she was almost back to her old self. I can only describe what she was doing as a seizure or many seizures. It was incredibly scary, I thought she was dying in front of me. I called Hartz and they advised that methoprene would not produce this reaction, my stupid vet said the same thing, he’s an idiot though. I’m extremely angry and I feel that there are enough complaints of reactions like this that Hartz needs to be called out in court. I’d like to know if anyone else has used this particular product with similar reactions in their pet.