Hi! I haven't - I looked it up, I was thinking it was a food LOL.
(No, I'm scared to death to put any flea treatment on him or in him, so at the first sign of a scratch/itch I put a very very small amount of avon skin so soft on a couple of my fingers and rub that on the back of his neck).
I have not used Bravecto and probably never will, many people have used it with no problems but I'm leery of these "new, stronger" flea controls that are sometimes TOO strong. I'm a flighty little thing =P
I've used topical flea prevention with no problems before but have had a handful of them (a few cats, a dog) have odd immediate side effects, acting drunk, etc. I can wash topical applications off and contact my vet, but with a pill I worry about how long it takes to induce vomiting, etc.
I'm not bashing it (Bravecto or any other new-ish product), I'm just sharing my paranoia!