May want to have a blood test and have your electrolyte levels looked at. I was told steriods can impact the potassium level. I'm at 15mg of Pred from 40mg and my potassium level was quite low so I started drinking coconut water - Zico brand. It contains all the electrolytes.
May want to check your hormon balance, testosterone, and thyroid levels too.
Have you had a bone density (DX) test done before steriod? This give you a baseline incase of bone lose from steriods.
DHEA may help replensh any inefficient estrogen levels.
Have you ever heard of Mineral of Life or Bone Support from World Health Mall? I started taking the liquid bone density formula as my teeth were getting sensitve..maybe bone lose or because my roots are exposed. Hurts to drink cold tab water! Here the product link: http://www.worldhealthmall.com/bone-support-1/
I found alot of useful information here on suppliments: http://holistichealthshoppe.com/index.php#24. Don't have to buy them there but it's informative.
I'll be going to 10mg this Sat. Wish me luck!