I prey and hope that you remain symptom free man, and it knocked out whatever the hell you had. If you do no get better, go see Either Dr. Martin WOlfe in Washingnot DC. who is a giardia world epxert and has an amazing medication that not many doctors have access to. Or go see Dr. cahill. Martin Wolfe knows very well which meds do and do not work agains Giardia.
He also has his own lab two feet away from his office. And he does nto trust outside stool testing. A mark of a good doctor. But He does not do mucus scraping like Dr. Cahill, a weakness.....
But nonethelesss, he is a am amazing doctor, and even treats people empirically, based on his years of clinical experience. These are real doctors, and I say this from experience, having gone to so many crooks....who know nothing about parasites.