2 capsules 3 X daily if this is the only anti-parasite type herb your consuming, in other words, your only herbal supplement is olive leaf capsules.
THEN, "IF" you wake up with a scratchy throat or any signs of an ilness being expelled, you take 21 capsules that morning and that normally is enough to return to normal. The Olive Leaf improves blood circulation and elimination. It is best taken as a food and not as a medicine. As a medicine the dose is very large and best in tea form, example: make 2 gallons of very rich/dark olive leaf tea (not powder) and drink 1 quart per day until all 2 gallons are done, then return to the capsules. This would be my best advice for someone with their own olive leaf tree or those who only want to use one herb, the safest of them all, the Olive Leaf Tree.