Is there any medical condition that has this effect on the body: no tolerance for any medication, drugs, or certain foods, possibly have to do with metabolism issues? I have this ball of pressure (feels like a knot) right under my heart that presses so hard it makes me dizzy, and my stomach muscles spasm in and out to compensate for the pressure. This started with intolerance to alcohol, then to every other thing, even antibiotics. I ask because I have a terrible sinus infection and swollen lymph node under my right ea, with an awful sore throat. The doctor prescribed amoxicillin, but every time I take it I get extremely weak, dizzy, and feel as if I'm going to pass out. My heart feels like it's beating slowly, and the veins in my hands and legs dilate. So I stopped taking it. I am celiac, so everyone knows, and I just found out that amoxicllin is notorious for containing gluten, so that is a possibility...but it doesn't explain the reactions to EVERYTHING. Perhaps yeast?