I just use oil of oregano drops which you should be able to purchase at any health food store. I have gradually raised my dosage to 4-5 drops 3 times per day, before meals. I buy Olive Leaf and the other herbs in bulk powder and just mix them into warm water and drink them between meals, along with the oil of oregano. I just go with what feels right and adjust my dosage accordingly. To be honest I never had great success with the pre-fabricated herbal parasite blends - I seem to be getting better results with compiling my own formulas. I also take liver herbs like milk thistle and turmeric and I do daily coffee enemas because this type of aggressive parasite-killing program can be stressful on the liver. Hope this helps!