Failure to control internal parasites can result in a decrease in feed intake and general immunosuppression leading to increased sickness during the feeding period.1, 2 The injectable avermectin products, such
as doramectin, provide superior efficacy at controlling internal parasites, while pour - on products provide the best control for external parasites.
Some breeds have a faulty gene that means they are sensitive to certain drugs such
as ivermectin — type heartwormers (including moxidectin, selamectin and
doramectin), loperamide (for diarrhea), acepromazine (for sedation) and butorphanol (for pain relief),
as well
as some chemotherapeutic drugs.