My doctor prescribed Calcitriol capsules @ 6 weeks ago for softening of my bones due to Vitamin D deficiency. Since my kidney function is around 35%, I am assuming this is the cause of the bone condition. Since I have been taking Calcitriol, I have experienced severe pain in my spine, right hip with pain radiating down my right leg. It has been the only change in my medicine. This pain is affecting my quality of life. I also experience pain in my stomach. Can this be caused by this drug and is there anything else one can take for vitamin d deficiency?