You have to look in the cattle or horse section as Ivermectin is an off label use for chickens and goats. You can also order it through Jeffers
http://www.jefferslivestock.com/ssc...CVCRK9LT0159LJBEVP53N0TA7&keywords=ivermectin
http://www.jefferslivestock.com/ssc...CVCRK9LT0159LJBEVP53N0TA7&keywords=ivermectin