Comfortis monthly flea: warning!

[Karen]

Source?

[MonicanHonda]

I've been reading it a lot... I'll find the source... hold on.

[MonicanHonda]

Although I think I read that problems arise with the comfortis when you give too much heartworm meds... so you have to be very strict on the amount of heartworm med given.

[Freedom]

Source?

FDA has been reviewing Comfortis, post approval, since 2008, due to recurring reports from vets of dogs having seizures and, in more than half the cases, dying, when both are given close in time.

My vet told me the info in the initial post. Most vets are now aware of the issue, it is widely discussed on the veterinarian practice net, she said.