I have frequent episodes of dehydration, dry mouth, urinating more often, feeling dizzy and weak after food. glucose was fine. any other diagnosis?

Second opinion: Wide range of conflicting symptoms. Diabetes comes to mind or even a thyroid problem. I would attempt to get a second opinion and maybe additional tests, if needed. What about your nutrition and allergies?

See doctor: You might want to have your kidneys checked; maybe see an endocrinologist to have all your glands checked. Are you taking thyroid replacement pills? The doseage might need to be altered.