Ivermectin can stay in the body for an appreciable duration.
Blood Circulation: Ivermectin can stay active for up to 18 hours in blood circulation
Intestines: In the system, it can persist for an even longer duration. It can stay in the intestines for up to 12 days and during that time it continues to portray antiparasitic effects.
It should be noted that in people suffering from liver or kidney disease the metabolism of Ivermectin is impacted. Due to the same, it can stay in the system for a longer duration in people with liver and kidney diseases.