Oh poor Minion. Please get better soon. We don't need any more sick pets here at Pet Talk. I use advantage on my cats every month and they're indoor only cats too. I use it because I've had a flea outbreak before and never want to go through this again. The only problems that I've had is that Sunny and Storm have become irritated and lost some fur in the area where I applied the advantage. This only happened one time. I'm also using the large dog kind and measuring it for large cats. This way I save money. The vet said the formula is the same for both cats and dogs. Good luck. Please keep us updated on Minion's condition.