@reneesc First, a correction from my last post. I had a parasite, not just bacteria. So, harder to kill w/out destroying the rest of your microbiome and needing to rebuild it. The Doctor prescribed Zymex II from the company Standard Process. It took 2.5 months and a gradually decreasing dose per day, so $75 of the product plus three $40 visits to the office. (Of course my bills from the top heart clinic in my area plus CT scans and Ultrasounds were $5500 out of pocket with zero answers). Pretty sure that Standard Process tries to sell only in doctors' offices, but it is an OTC product. Hope this is helpful.