If the cramps are caused by calcium deficiency, calcium gluconate or calcium carbonate tablets can be taken for treatment. Calcium tablets are not recommended for treatment of cramps caused by lumbar intervertebral disc herniation or atherosclerosis of the lower limbs. 1. Calcium gluconate: Calcium gluconate has a good effect on relieving cramps caused by calcium deficiency. However, it should be noted that the contraindications of this drug are very many, such as hypercalcemia, hypercalciuria, kidney stones, nodular disease and other diseases of patients can not be used, pregnant women, lactating mothers, the elderly, children, renal insufficiency and other special groups of patients are not recommended to use. 2. Calcium carbonate tablets: the main effect of calcium carbonate tablets is to prevent and treat diseases caused by calcium deficiency, such as osteoporosis, osteogenesis imperfecta, rickets, etc., also used for daily calcium supplementation. It is contraindicated in patients with cardiac or renal insufficiency, hypercalcemia, hypercalciuria, calcium kidney stones or history of kidney stones, and patients who are allergic to this drug. Calcium tablets need to be used under the supervision of a doctor. In addition, lower limb atherosclerosis, lumbar intervertebral disc herniation and other diseases may also cause lower limb cramps, if frequent cramps, patients are advised to go to the hospital for further examination and treatment.