I have never tried any supplements for coprophagia, the price deterred me and the fact that they look like chemical junk? Also, you would have to give them to every dog in your household, plus I have heard that they don’t work.
PS: Has the vet ruled out medical issues? Good article here : http://www.aspca.org/pet-care/virtual-pet-behaviorist/dog-behavior/coprophagia-eating-feces (excerpt below)
Medical Problems to Rule Out
Starvation, Malnutrition or Malabsorption Disorders
If your dog isn’t getting sufficient food or isn’t able to digest the nutrition in his food, he may resort to coprophagia as a way to supplement his diet. Before doing anything else, it’s important to have your dog thoroughly examined by a veterinarian to rule out medical problems that could cause coprophagia.
