Mimpara is used: • to treat secondary hyperparathyroidism in patients with kidney disease on dialysis. • to reduce high levels of calcium in the blood (hypercalcaemia) in patients with parathyroid cancer. • to reduce high levels of calcium in the blood (hypercalcaemia) in patients with primary hyperparathyroidism who still have high calcium levels after removal of the parathyroid gland or when removal of the gland is not possible.