For heartworm prevention in dogs, a typical ivermectin paste dose is 6–12 mcg per pound of body weight once monthly. That’s about 0.006–0.012 mg/kg. Stick to products made specifically for dogs—never use livestock versions.
How much ivermectin do I give my dog?
For heartworm prevention, give 6–12 micrograms (mcg) of ivermectin per pound of body weight once a month. That’s roughly 0.006–0.012 mg/kg. Anything above 2.5 mg/kg can poison most dogs, so don’t go rogue with the dosing.
Heartworm prevention is FDA-approved at 6 mcg/kg monthly. Vets sometimes use higher doses off-label for other parasites, but never exceed what your vet prescribes.
How much ivermectin do you give a dog per pound?
Give 0.15 mg per pound (0.3 mg/kg) for skin parasites and 0.1 mg per pound (0.2 mg/kg) for gut worms. For heartworm prevention, stick to 0.006–0.012 mg/kg once a month.
Mange treatments often get repeated after two weeks, while heartworm prevention is a monthly habit. Double-check which parasite you’re targeting with your vet.
How do you give a dog ivermectin?
Give ivermectin orally using the dog-specific product and syringe that come with it. Most heartworm preventives for dogs come as tasty chews or liquid pastes you give once a month.
Don’t mess with splitting or diluting the commercial product unless your vet says so. Keep unused paste away from light and moisture, and toss any syringe once it’s past the expiration date.
How do you dilute ivermectin for dogs?
Mix 0.1 cc of 1% ivermectin solution with 3 cc of glycerin, propylene glycol, or vegetable oil to make a 30:1 dilution. That diluted mix treats 300 pounds of dog at the 1% concentration.
Dilution is mostly for off-label use with large-animal formulas. Use sterile tools, label the mix clearly, and toss any leftover after 30 days.
How much ivermectin do I give a dog with sarcoptic mange?
Treat sarcoptic mange with 300 micrograms (mcg) of ivermectin per kilogram of body weight. Repeat the dose after two weeks.
Get a proper diagnosis first—sarcoptic mange can look like other skin issues. Some breeds need different treatments because they’re sensitive to ivermectin.
How much ivermectin do you give a 50 lb dog?
For heartworm prevention, give about 300–600 mcg (0.3–0.6 mg) once a month. For mange, a single dose of 680 mcg (0.68 mg) is often used.
Always confirm the parasite target and product with your vet before dosing. Use a properly sized syringe to get the measurement right.
How much ivermectin do I give a dog for heartworm prevention?
Standard heartworm prevention doses are 6–12 mcg/kg orally once a month. That’s about 30–60 mcg per 10 pounds of body weight.
Products like Heartgard Plus (ivermectin/pyrantel) come pre-measured in a single chewable. In areas where heartworm is common, prevention should be year-round.
How do you dilute ivermectin?
Dilute 1 mL of 10 mg/mL ivermectin with 9 mL of propylene glycol to make a 1 mg/mL solution. Then dose at 200–400 mcg/kg orally.
This trick is mostly for repurposing livestock formulas for pets. Store the mix in a glass bottle, label it clearly, and use it within 30 days. Toss it if it changes color.
How much ivermectin can I give my 40 pound dog?
For a 40 lb (18 kg) dog, the safe oral dose for heartworm prevention is about 240–480 mcg (0.24–0.48 mg) once a month. Dogs with the MDR1 mutation may only handle as little as 0.04 mg.
Toxicity risk jumps above 2.5 mg/kg, so don’t guess with livestock formulas. If you’re using those, run the numbers by your vet first.
What happens if you give a dog too much ivermectin?
Signs of overdose include dilated pupils, tremors, drooling, seizures, coma, respiratory failure, and even death. Without quick, aggressive care, poisoning can be fatal.
If ingestion happened in the last one to two hours, early decontamination—like inducing vomiting or giving activated charcoal—might help. Treatment focuses on controlling seizures, keeping the dog’s temperature stable, and supporting breathing.
How much ivermectin can I give my puppy?
For puppies over six weeks old, give 0.0015–0.003 mg/kg orally once a month for heartworm prevention. Higher doses for other parasites depend on weight and age.
Check with your vet before using ivermectin in tiny or very young puppies. Skip it entirely for breeds with the MDR1 gene unless your vet signs off.
How do you treat an ivermectin overdose in dogs?
There’s no specific antidote—treatment is supportive and based on symptoms. If ingestion was recent, vomiting and activated charcoal might help.
Intravenous fluids, oxygen therapy, anti-seizure meds, and temperature control are the main tools. The sooner a vet intervenes, the better the outcome.
How do you use ivermectin Agmectin 0.3 granulated powder?
Mix Agmectin 0.3% granulated powder into complete feed at the labeled dosages. For swine, medicate for seven days straight or follow a deworming schedule repeated after two weeks.
Follow the label exactly for species, age, and weight. Don’t use it in dogs unless your vet explicitly approves canine use.
How much ivomec do I give a dog for mange?
For sarcoptic mange, give 300 mcg/kg orally, repeating after two weeks. For demodectic mange, doses range from 400–600 mcg/kg, also repeated after two weeks.
Confirm the mange type and use only dog-labeled products. Some breeds need alternatives because of genetic sensitivity.
How long does it take ivermectin to work in dogs?
Ivermectin starts working systemically within one to two hours of oral dosing. You might not see visible improvement in parasite numbers for days or even weeks.
Follow-up tests—like fecal exams or antigen tests—can confirm it’s doing the job. Keep giving the monthly prevention as directed.
Can I worm my dog with ivermectin?
Ivermectin can tackle certain internal parasites in dogs, but it’s not approved for all worm types. Skip it for collies and related herding breeds unless your vet says it’s okay.
It’s most effective against heartworm larvae, hookworms, and roundworms. Pair deworming with fecal tests and good hygiene to keep reinfection low.
Can you use cattle ivermectin on dogs?
Never use livestock ivermectin on dogs unless the product is explicitly approved for both. Livestock versions can contain extras that are unsafe for dogs.
Dosing is also tricky without the right syringes. Pick a product made for dogs whenever you can.
Can you give injectable ivermectin orally?
Oral use is the only approved route for ivermectin in dogs. Injectable versions are meant for under-the-skin use in livestock.
If a dog swallows injectable ivermectin, absorption can be unpredictable and toxic. Only use oral products labeled for dogs.
What happens if ivermectin is given intramuscularly?
Injecting ivermectin into muscle can spike blood levels and raise toxicity risk. Absorption happens fast, potentially causing neurological signs.
For livestock formulas, subcutaneous injection is the safer route. If an IM shot happens by accident, watch the dog closely and call your vet.
How much ivermectin do you give a 50lb dog?
Give 15 mL of 1% ivermectin solution for every 50 pounds. That’s 10 mg per pound every six hours. (Answer provided by a verified dog veterinarian.)
Edited and fact-checked by the FixAnswer editorial team.
