No. It's confusing because they both have the brand name Ivomec on the package.
Eprinex is Eprinomectin.
Ivomec is Ivermectin.
Both are pour ons, but different chemicals.
LOL
One is administered by injection, and one is administered topically. Ivomec used for injection is administered off label, given orally by some people owning avian species. They are both of the same chemical family of avermectins, but formulated differently. In my experiences using both, neither are effective against endoparasites or ectoparasites on poultry.