I order Ivermectin as a heart worm preventative for my dog from J R Enterprises based out of Louisiana. The vet requires a prescription and and massive markup. A $25 bottle will keep a dog parasite free for several years.
Do you have contact information?
You can buy Ivermectin equine Apple flavor for horses on eBay, Amazon and even walmart.com.
I think the search Ivermectin Apple paste might be what somebody was talking about a week or two ago.
