For me, I buy the pill fr from India (pharmacydelivers.com), 12 mg; and take it for 5 days straight and then 2 wks off, then take the next 5 pills, to rid of the babies (if any).If any other symptoms comes up, ie stomach upset or cold, take another regimen. But it’s really up to one’s condition. So if a person has cancer already, it may require to do it for 3-6 mos, just to rid of the parasites causing the cancer. Ivermectin is safe enough that u can’t over do it/ overdose. Hope this helps.