Don't make this more difficult than it needs to be :>) - the answers will come. The question is what type of parasite you have. Try the herbal route first, and if it doesn't work, then try a pharma - a short term course of a safe pharma drug is not going to kill you! IMO cysteine is not going to kill a worm but it is a great supp to help you detox your liver and bolster the immune response. OOO is great for topical applications, on the other hand medical grade ozone will kill just about anything - but I wouldn't waste my time on that. Try not to be "sectarian" on which approach works, do what is good for you.