- Taking certain medications, especially those that affect bone metabolism (e.g., high dose vitamin D [>1000 units daily] or calcium supplements [>800mg daily], high dose vitamin A [>20,000 units daily], phosphate binding antacids, calcitonin, calcitriol, growth hormone, or any anti-seizure medications for any reason including valproic acid, lamotrigine), certain medications for high blood pressure (diuretics), steroids including inhalers, diet/weight loss medications, or any other medications at the discretion of the principal investigator and/or study team