| Like any Magnesium compound, Mag. phos. will work great for cases of spasms and cramps. This is seen best in conditions like dysmenorrhea ( painful menses ) or in leg cramps ( charley horses ). The pains start and end suddenly, nerve-like pains which makes the person cry out loud, and are relieved by bending over (doubling up) and by heat. Colicky babies have been helped by this remedy, as well as cramps in violin players (player's cramp), in sciatica and facial nerve pain. Keep in mind that it is mainly a right-sided remedy (Colocynth is a left-sided remedy with similar characteristics; see listing under Colocynth). Mag. phos. and Cuprum will resolve 90% of leg and foot cramps.