IverCare® dewormer is the only ivermectin that treats horses up to 1,500 lbs., so your bigger horses are covered with just one dose. Plus, it’s the only ivermectin available in the Sure-Grip Syringe, making your job fast, easy and effective. Offer your horse the broadest spectrum parasite control in an easy-dose syringe. IverCare® is a 1.87% ivermectin paste (anthelmintic and boticide) that kills 35 species and stages of worms and bots in a single dose.