We are ingesting parasites daily though the air, food, etc, so if yo have done a month of full dose parasite cleansing, you only need take wormwood, black walnut and clove once or twice a week for maintenance.
These 3 herbs only work together for parasite cleansing, there is no use in taking one without the other.
Olive leaf is very good for keeping colds and flu away, you could just take what it sys on the bottle which would b a very small dose anyway and it wouldnt hurt. when i was taking i i didnt catch a cold in 2 yrs or so.