Have you checked the available scientific literature for a peer reviewed article on the removal of Blastocystis hominis (B. hominis)? I checked on MedLine, and it seems that this article may have the answers you need. I would print it and take it to your health care provider and see if they can help you.
Go to: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMe...