My dog accidentally got an extra dose of heartworm medicine?
Updated On September 23rd, 2025
Pet's info: Dog | Mixed Breed | Male | neutered
We accidentally gave our golden doodle an extra dose of heartwoerm ivermectin?
2 Answers
Most Helpful Answer
Published on December 6th, 2015
If it was Heartgard, there is no cause for concern. It is an extremely safe product and very difficult to overdose. If it was a different preparation of ivermectin, a double dose may not be cause for concern unless your dog is sensitive to it or carries the MDR1 gene. Typically, a non sensitive dog requires dosing around 2000mcg/kg before clinical signs become apparent. See your vet for an exam as soon as you can if you are concerned. Bring the container of ivermectin with you. Treatment for ivermectin toxicity is supportive in nature. Monitor for vomiting, excess salivation, ataxia (wobbly gait), dilated pupils or tremors.
58Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on April 30th, 2015
Toxicity can occur if a dog is given an excessive dose of the medication (10 to 20 times the recommended dose). Your dog has consumed roughly four times the recommended dose. If your dog has ivermectin toxicity, you may see any of the following symptoms: Lethargy Depression Drooling Vomiting Dilated pupils Loss of appetite Disorientation Tremors/Seizures Blindness Trouble standing Slow heartbeat Difficulty breathing Coma Ivermectin toxicity cannot be reversed. If the drug was given within the past 4 – 6 hours, your veterinarian may induce vomiting and/or give your dog activated charcoal to help minimize the amount of ivermectin that is absorbed. If it has been less than 2 hours since your pet ingested the foreign material, you can induce vomiting by giving an oral dose of hydrogen peroxide, about 1 cc per pound. One tablespoon is about 5 cc. A turkey baster will work if you don't have a syringe. Longer than two hours and it will have already moved into the intestines.
7Pet Parents found this answer helpful
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