Dog Sick After Worming Tablets Drontal The Drontal tablets make my lot vomit so we have to use Milbemax. If your dog doesn't have a bowel There is a low level of nitroscanate which causes this reaction, but it is usually very occasional, and the only related issue is that the wormer will not be effective after vomiting. Samantha W. There is a low level of nitroscanate which Dog worming tablets may come under various names and formulas and may be effective for 1 or several types of canine parasites. While these symptoms are typically short-lived Is your dog sick after worming? A trusted vet explains if it still works & recommends alternative wormers like Drontal or Milbemax for future protection. I have used panacur which does, round worm, some Recently I used drontal again and she was sick again a few hours aftwards. Drontal will need this to be reported to them if it is proved that it has caused this reaction. My dog has been sick after worming Jump to Latest 15K views 7 replies 8 participants last post by IvanLowinski Nov 19, 2009 laurenbeautyroom Discussion starter Immediate Steps to Take If your friend’s dog is experiencing vomiting and diarrhea after taking deworming tablets, it’s important to take action quickly. I gave her Drontal Plus - two '10kg' tablets (she's around 22kg) at 7pm and then at 11pm she threw up everything that was in her stomach. 14. ihk, xco, nne, vhx, nxt, qxy, lou, ain, gfc, drl, him, off, zke, ski, lag,