Hello ! I read your question and understand your concern. I would recommend treatment of hypocalcemia from hypoparathyroidism, which is induced by the intervention you have done. This is the cause of your osteopenia. I would also recommend tests like bone densitometry to measure the real problem. This problem can be treated only symptomatically, but once initiate it is difficult to stop. Oral calcium supplements and Vitamine D in the form of calcitriol would increase calcium levels in your blood and stop osteopenia from progressing. However, at high doses, calcium supplements can cause gastrointestinal side effects, such as constipation, in some people. Diet modificatiol would also be helpful:dairy products rich in calcium like: green leafy vegetables, broccoli, kale, and fortified orange juice and breakfast cereal and low in phosphorus-rich items. This means avoiding carbonated soft drinks, which contain phosphorus in the form of phosphoric acid, and limiting eggs and meats. I would also recommend Cinarizine for the dizziness or Betahistine. Hope to have been helpful! Best wishes, Dr. Abaz Quka