Mectin is a vetrinary injection . Its composition contains ivermectin ivermectin is a medication that is effective against many types of parasites.[1] it is used to treat head lice, [2] scabies, [3] river blindness, [4] strongyloidiasis, [5] and lymphatic filariasis, among others.[6] it can be either applied to the skin or taken by mouth. The eyes should be avoided.[2] common side effects include red eyes, dry skin, and burning skin.[2] it is unclear if it is safe for use during pregnancy, but is likely acceptable for use during breastfeeding.[7] it is in the avermectin family of medications and works by causing an increase in permeability of cell membrane resulting in paralysis and death of the parasite.[2] ivermectin was discovered in 1975 and came into medical use in 1981.[6][8] it is on the world health organization's list of essential medicines, the most important medications needed in a basic health system.