kittycats_delight - If I read her post right she DID get the Sargents from the vet. I'd rather wonder about a vet still recommending or dispensing that 'crap' as you so aptly call it.

Creativeangel - If you're needing flea stuff for the cat stick with the vet approved ones (Frontline, Frontline Plus, Advantage, Revolution) even though they are more expensive.

Avoid Sargents, Hartz, Bio Spot etc. I've seen FAR too many animals come in our hospital with reactions to those cheap products. While they may advertise as 'natural' what they contain is pyretherins which can have horrible reactions, particularly in cats and aren't safe around people particularly children.

since your kitty has already had a reaction, get her to a vet ASAP.