Five days ago I started a 10 days round of an AB composed of sulphametoxazole 80% and trimetoprim 20% prescribed my GP on a plan based on anti-parasites, antibiotics, and then antiyeast and then antiparasites again The AB is described here: http://www.mayoclinic.org/drugs-sup...imethoprim-oral-route/description/drg-2007189 I am feeling bad today (day 5) and some of the CFS symptoms I though I had under control seem to come back. I felt not well the first day with AB either. What is the most likely explanation for my symptoms at day 5?: i) a die-off or ii) the AB weakening my Th1 system even more and thus leaving viruses without control? You find such a bad things about ABs that I don't know what to do...what would you suggest? To complete the 10 days round or to stop right now? Many thanks for the feedback!