ivromectin wormer, cause hardening of liver?

Been using ivromectin for years and years. This is my thought to much will ruin your dogs liver. Also everybody wants to worm dogs with Ivromec but from what I have seen over the years is it is not for the stomach worms really. The way we used it was each month to help kill and keep the heartworms out . I give only 1/4 to 1/2 cc in mouth to my dogs depending on how big they are . As far as for the stomach worms this is how we used it and thought it worked. You need to clean your dog out with regular stomach worm like panacure are any type of wormer that works for you then once the stomach worms are clean and you are giving the ivromec once a month for heart worm preventive what the ivromec does as we have seen once the dog is clean of stomach worms it will help keep them clean of stomach worms but just to give ivormec for stomach worms it does not do a very good job but it will dang sure help keep them clean .