[Susan]

Hi, side effects wouldn’t be lasting 2 weeks, she may have another health problem, like Pancreatitis, Does she have a temperature?? maybe go vets & have blood test done…when my boy had a side effect to Advantage he vomited blood the once early hours of the morning, he had swollening side of his head & ear, he was off, not himself, not playing for about 3-4 days & sleeping…The Advantage was the first time I ever used it too, never again…yet I use the Advantage on my cat & he’s always fine…
You say that you used the Frontline Plus the month before, you would of seen side effects the first time when you applied it….I’d say she has a health problem something is wrong…