Be sure to tell your veterinarian about any medications (including vitamins, supplements, or herbal therapies) that your pet is taking before starting any treatment. Some medications increase the effects of ivermectin in a pet’s brain, including: ... Spinosad (a common flea preventive treatment) should not be administered when high doses of ivermectin are used to treat mite infestations.
3 weeks ago -It is not effective against fleas or tapeworms. Ivermectin is approved by the FDA in cats for preventing heartworm, using Heartgard tablets. They recommend a minimum dose of 12 micrograms/pound once a month.

October 28, 2025 -Ivermectin and the other closely related drugs have broad activity against a variety of parasitic worms, including hookworms, whipworms and roundworms, which infect the intestines of dogs and cats. The human worms causing Night Blindness and Elephantiasis are also roundworms. If you read the label of your pet’s monthly heartworm medication, it may say the medication is effective against other worms like tapeworms. Tapeworms are flat, not round, and are not killed by ivermectin. Instead, they are targeted by other medication that is included in your dog’s heartworm preventative. Even though fleas and ticks are not spaghetti-like worms, some drugs in the ivermectin family will kill fleas, ticks and ear mites.

Activyl Spot On Advantage Spot On Advocate / Prinovox Banminth Baycox & Procox (see Advice Sheet: Coccidea in Kittens) Bravecto Broadline Drontal Frontline Spray and Spot On Ivermectin Subcutaneous Injections Milbactor Milbemax tablets Panacur Paste Profender Stronghold · External parasites are more prominent on Crete especially in the summer month’s therefore flea treatments need to be given monthly.