To relieve leg cramps caused by hypocalcemia, oral calcium supplements are highly effective. Common generic options include calcium carbonate (which is best absorbed when taken with meals) or calcium citrate (which can be taken with or without food). Because your body requires Vitamin D to properly absorb calcium, these are often paired with vitamin D3 (cholecalciferol) supplements. Please consult your doctor before starting any regimen. They will perform a simple blood test to prescribe the precise dosage you need to safely restore your levels and stop the cramps. Staying well-hydrated can also provide quick relief.