From Cow

Ivermectin is an injectable avermectin effective against endo- and ecto-parasites of cattle.

Ivermectin is a macrocyclic lactone derived from fermentation of the bacteria Streptomyces avermitilis. Other avermectins used on cattle include:

The recommended dose for injectable ivermectin is 0.1cc/kg SQ stat, or once weekly for ectoparasites. Oral dose is 24 µg/kg once monthly.