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					Originally Posted by  LordRanger     My dogs experience more side effects from the heartworm medicine than they do from the vaccines, by far.  I will still do the heartworm meds, but only if she's looking healthy and there's nothing big planned for the next day or two.   |  
 
  My dogs certainly have no side effects from taking their heartgard every month. If your dog is having some kind of side effects that are making them sick from heartworm medication then you need to talk to your vet about a different one because that is not normal.