great! I do not think parasites are a major problem for me. I have been *zapping* quite regularly the last twelves months and I have just finished a parasite cleanse and plan on doing a deeper cleanse using oregano oil after I finish this short cleanse using the P&B. I do try to use a better enzyme when I am eating proteins like meat but just ran out and plan to stick to fruits and veggies for the colon cleanse.