I enjoy Mexican food however, no matter which Mexican restaurant I choose, within 2 hours I have dizziness, light headed and, upset stomach symptoms, no vomit but cramps. Feel like diarrhea is coming on but it never does. Weakness and at times, slight case of cold sweats. Again, it makes no difference which restaurant-fast food Mexican restaurant chains or very elegant ones. Apparently there is one ingredient that they all use that, no other restaurant uses. I have a clean bill of health and no known allergies.