Magnesium relieves constipation too. In fact, insufficient magnesium intake often causes constipation
. It is an essential nutrient and is needed to relax muscles, produce energy and so much more. It is extremely well researched and much info is on this site, also.
Below is a quote from this site (http://www.calmnatural.com/constipation-relief
"Jesse Lynn Hanley, M.D., in his book, 'Tired of Being Tired', proposes the following way to take Magnesium to relieve your constipation: "Take at bedtime. Begin with 200 milligrams magnesium oxide or magnesium citrate—you may increase the dosage in 200-milligram increments until your bowels move regularly. The dose for magnesium is individual, so begin low and increase the dosage as needed. Reduce the dosage if you experience loose bowels. Unlike irritating laxatives, magnesium does not create laxative dependency."