Hi Mark,
Iīm taking 500 mg Calcium and 1000 UI Vit D3 per day since many years...
As you are also on Pred, you should get some Potassium supplements as cortisone lowers blood potassium content but donīt overdo it as excess Potassium is not good for heart functions. I Take one banana per day and some almond powder in my cereals.
Prefer also a low sodium diet.
Maurice.