There haven't been any serious side effects from Capstar but there are for Spot-On Pesticides such as Frontline, Zodiac, ProMeris, Defend, Bio Spot, Adams and Advantage trigger adverse reactions in dogs and cats, shorten life spans, cause terminal illness, and premature death. . The active ingredients in these solutions include chemicals such as imidacloprid, fipronil, permethrin, methoprene, and pyriproxyfen. This applies to any flea shampoo and collars.
Labels may warn not to get these substances on your skin, to wash your hands after applying it, and to keep it away from children, yet these chemicals are absorbed by your animal’s skin. Immediate effects of pesticide overdose include vomiting, diarrhea, trembling, seizures, and respiratory problems. If your dog or cat shows any of these symptoms after the application of a pesticide, immediately wash the product off and seek veterinary care.
answered 3 years, 3 months ago
1out of 2found this answer helpful.
Almost anything can cause an allergic reaction in a dog or cat (dust, pollen, beef... just like people, they can be allergic to almost anything) but usually the foamy-mouth thing is a reaction to the fact that you just took a dry, nasty-flavored pill and made them swallow it. It would be easier if we could tell them to "take one of these with some water", but we can't. At least one of my three cats gets a lick of the Frontline when I put it on them, and they react by running around the house with foam spraying from their mouth. If the animal acts weird (anything not normal for your pet) then it could be a reaction. But simple foaming with no other symptoms is just your pet's way of dealing with being forced to do something they don't want to.
answered 3 years, 7 months ago
0out of 4found this answer helpful.
While only a Veterinarian can diagnose allergies for you, I can tell you cats can foam and drool when they get an objectionable flavor in their mouths (especially with medicine). Foaming/drooling does not necessarily mean that she is allergic.
This medicine does have some fairly intense chemicals in it, be sure your pet is in tip-top health in addition to your researching these active ingredients to see if you want to put them in/on your beloved pet.
answered 3 years, 8 months ago
5out of 5found this answer helpful.
i use to have a Siamese cat that would foam at the mouth everytime i took her to the vet. we just chalked it up to nerves. i gave capstar to my cats last summer. 3 did fine with it, 1 foamed at the mouth. i don't think its an allergic reaction, i would say just nerves if the foaming only lasted less than a 1/2 hr.
answered 3 years, 10 months ago
2out of 2found this answer helpful.