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Ask Dr. Michael Salkin Your Own Question
Dr. Michael Salkin
Dr. Michael Salkin, Veterinarian
Category: Dog Veterinary
Satisfied Customers: 24383
Experience:  University of California at Davis graduate veterinarian with 44 years of experience
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My dog weighs 60 lbs. How much ivermectin should I give him

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My dog weighs 60 lbs. How much ivermectin should I give him? Do I give this once a month? If it is injectable, will I have to give a shot or can I put it in some food and administer it? Thank you.
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Hi - Actually Heartguard's active ingredient is ivermectin. You can save a lot of money by using the 1% solution of ivermectin available in feed stores (usually labeled for horses and cattle but ivermectin is ivermectin) at a dose of 5mcg/# XXXXX body weight once monthly given directly into his mouth. He'll need 60# XXXXX 5mcg/# = 300mcg of ivermectin. There's 10,000 mcg of ivermectin in 1ml of a 1% solution, so you'll need to give 300/10,000 or 0.03ml of this solution monthly. That's a tiny amount so you should use a tuberculin syringe to dose accurately. To make it easier for you, you can give 0.1ml (a tenth of a ml) monthly - ivermectin is safe at 100 times the dose used for heartworm prevention. Please respond with further questions or concerns if you wish.
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This response of mine should appear when you click on the email notice you'll get. The answer above is to simply give 0.1ml of a 1% ivermectin solution by mouth monthly. Thank you for your kind accept. I appreciate it!