secondary hyperparathyroidism
"I've been on cinacalcet for five years, two while on dialysis (I was on dialysis for five and a half years) and three post-kidney transplant. While it does reduce my blood calcium levels, my biggest complaint is tiredness, especially right after I take it, which is with food at dinner. I was once at 90 mg a day, now down to 60 mg, and hoping to reduce to 30 mg because of the terrible tiredness. By the way, post-transplant I've been able to eat high levels of calcium and phosphorous (dairy, nuts, sardines etc) and that has enabled me to be able to lower the amount of cinacalcet I take by signalling to the parathyroid that I have adequate amounts of calcium in my blood. "