Give Your Cells What They Need to Keep You Well Cell Salts are like multivitamins for cells, bringing balance back to your body by providing essential minerals vital to cellular health and function. Muscle cramps, spasms, sciatica and radiating pains can make you miserable. But relief can be quick and simple with a Mag Phos reboot. Uses Temporarily relieves: muscle cramps, pain Suggested use Use as directed. Adults and children 6 years and over: Dissolve 1 tablet under tongue 3 times per day.