[Help] My sensitive dog tries to throw up when I give her worm medication.

I have a puppy who seems overly sensitive to almost everything. Giving her her shots as a puppy gave her diarrhea and vomiting about two weeks total, on and off over a couple months when she went on and off antibiotics/anti-diarrhetics. I give her worming medication once a month, have for the past 4 months now, and it seems like every time she takes them she tries to throw up, either immediately (10-30 minutes later) or later that same night. I can either make her stop throwing up or get her to swallow it back down if I can't actually stop the convulsions, and once she tries once (whether she succeeds or not) she doesn't do it again, but I want to know if there are any directions/tips/tricks to getting a dog to not vomit after taking their medication. She doesn't have any health-related issues aside from the vomiting, and it's only once a month, so I'd rather deal with this than her getting worms, but I'd love it if it were a little easier and I didn't have to watch her and physically stop her from not only vomiting on my floor, but vomiting her medication up as well when it's the shorter timeframe.The pill is IverHeart I believe, and it's the chewable tablets. She has absolutely no problems eating it; I don't even have to wrap it in anything, she just straight devours it from my hand with no coaxing.She has never eaten very often (we leave her food bowl out and she's never overeaten, she's actually great at maintaining her own weight) so I don't know with 100% certainty whether her eating recently or not has any effect on the time frame or presence of vomiting, and that's the only thing I can think of. I did try getting her to eat a little last time but it didn't seem to do much except maybe delay the onset, but I'm open to suggestions about food and other things as well. via /r/dogs http://ift.tt/2rXThwY