I was dx'd with ' parasite present, taxonomy unknown' which has been resistant to multiple herbs, Flagyl, Secnidazole, TMP/SMX, Diolaxinide Furoate, Rifaximin, Ozone, Miracle-Mineral-Supplement etc.
I would cleanse the liver first. This is fairly extensive but has helped me. I use Buplernum Formula by Planetary Formulas, Readisorb Liposomal glutathione, poly PhospatdiylCholine (not the 35% product), Methylation products such as methylcobalmin (b12), folinic acid, methionine, taurine, cysteine. Use an Acupen (ebay) to stimulate the liver points, google this. Acumedico.com has the charts available for reference.