Updated On July 4th, 2015
Pet's info:
Answered By Debi Matlack 50
Veterinary Technician
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Johnson's flea tablet sound very much like a product I am familiar with called Capstar. It is meant to kill the fleas on the pet right away and to be used in conjunction with a longer acting flea product. It's helpful because it starts working quickly, but the effects only last for 24 hours. Your cat may be unsettled because she has a decent flea population on her and now the dying fleas as running around and making her itch. As long as she is okay otherwise, eating, drinking, eliminating normally, with no adverse symptoms such as vomiting, diarrhea, lethargy or loss of appetite, I'm inclined to believe that this is what is happening. If she develops any of these symptoms, get her seen by you vet right away.
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