Veterinary Medicines  Ivermectin for Dogs and Cats：

Ivermectin is used to control skin parasites, gastrointestinal parasites and parasites within the bloodstream in dogs and cats. Parasitic diseases are common in animals. Parasites can affect the skin, ears, stomach and intestines, and the internal organs including the heart, lungs and liver. Several drugs have been developed to kill or prevent parasites such as fleas, ticks, mites and worms. Ivermectin and related drugs are among the most effective of these.  Ivermectin is a parasite control drug. Ivermectin causes neurologic damage to the parasite, resulting in paralysis and death. Ivermectin has been used to prevent parasite infections, as with heartworm prevention, and to treat infections, as with ear mites.

For dogs:

Dose is 0.0015 to 0.003 mg per pound (0.003 to 0.006 mg/kg) once a month for heartworm prevention; 0.15 mg per pound (0.3 mg/kg) once, then repeat in 14 days for skin parasites; and 0.1 mg per pound (0.2 mg/kg) once for gastrointestinal parasites.

For cats:

Dose is 0.012 mg per pound (0.024 mg/kg) once monthly for heartworm prevention.

The duration of administration depends on the condition being treated, response to the medication and the development of any adverse effects. Be certain to complete the prescription unless specifically directed by your veterinarian. Even if your pet feels better, the entire treatment plan should be completed to prevent relapse or prevent the development of resistance. Medication should never be administered without first consulting your veterinarian. The dose for ivermectin varies from species to species and also depends on the intent of treatment. General dosing guidelines follow.

1. Ivermectin should not be used in animals with known hypersensitivity or allergy to the drug.

2. Ivermectin should not be used in dogs that are positive for heartworm disease except under strict supervision of a veterinarian.

3. Prior to starting a heartworm prevention containing ivermectin, the dog should be tested for heartworms.

4. Ivermectin generally should be avoided in dogs less than 6 weeks of age.