Just curious if anyone here has noticed their chronic fatigue/brain fog starting after taking certain antibiotics. I had abdominal surgery 6 months ago for a GI issue that had bothered me for a year. It was major surgery, and although painful I was recovering well for the first few weeks. This had me excited, as I could sense that my GI issue may finally have been fixed. At 4 weeks, I came down with what appeared to be an infection (severe cramps, elevated WBC). I was given a 2 week script of ciproflaxin and flagyl, 2 known potent antibiotics. 4 days into this I started feeling really out of sorts......heavy fatigue, disorientation, mood swings, fog. I took this 4 more days thinking that you need to finish an antibiotic to kill off the bacteria before I had no choice but to stop. That was 5 months ago, and I am still feeling the effects of this, primarily the fatigue and brain fog. Now mind you I was doing triathlons and 10k runs before this despite the GI issue, so I know what my body feels like to exert and feel a normal type of fatigue after working out. Now I do 1.5 miles on the treadmill lightly....anything above that produces the PEM that I hear about. Unreal to feel how heavy and energy-less I am if I push beyond that. Adderall helps a bit for the mind so I can keep working, but not being able to do the things I used to enjoy right now is really tough. Depressing of course when what you were used to doing seems so out of reach. My take is the antibiotics did damage to the mitochondria's ability to produce energy. Any thoughts?