Ivermectin Toxicosis
SIDE EFFECTS
Side effects are not a concern with the extremely low doses used in commercially marketed heartworm preventives. problems may arise when higher doses, such as those used against mites, are employed.
Side effects generally do not occur with any anti-mange doses of ivermectin except in Collies, Shetland sheepdogs, Australian shepherds, and Old English sheepdogs, though some individual animals that are not members of these sensitive breeds may also be prone to side effects. Very low test doses are often recommended to identify these individuals r