Instant CalMag-C A balanced calcium and magnesium supplement with vitamin C that your body can assimilate very rapidly. Calcium and magnesium are essential for more than 300 functions in your body, such as sleep, pain, cramp and muscle spasm alleviation, nervousness, restless leg syndrome, relaxation, alleviating stress, hyperactivity, heart function, blood pressure, blood clotting (especially important during tooth extraction, child birth, operations and so on), etc.
Both calcium and magnesium are alkaline so they need some kind of acid before your body can absorb them. Failing to have this combination can lead to increased deficiencies of calcium and/or magnesium or, worse still, the calcium depositing in your joints (arthritis) or kidneys (stones). You can use apple cider vinegar or vitamin C, which is a more practical and better-tasting solution.