Ivermectin is also available under the brand name Stromectol (oral tablet), but people usually prefer to purchase the generic version because it is typically cheaper than the brand name counterpart. Both generic and brand name variantsof this drug work similarly. When you take the oral tablet, it gets the job done by binding to the parasite's insides, eventually paralyzing and killing off the parasite. It also attacks the adult parasite and hinders its larvae making while keeping the infection under control. This medicine might notstart working immediately after consumption, and it might also not work if you take one dose and stop using it. Try to consume the drug as prescribed by your doctor for the best results.