Jigsaw Health was started by Pat Sullivan (father) and Patrick Sullivan Jr. (son). Pat struggled on and off with various health challenges for over 30 years: fatigue, insomnia, gastro-intestinal problems, and depression. Along the way, he found answers and saw the benefits magnesium can have for sleep and energy as well as helping with muscle cramps. Since 2005, Jigsaw Health, "The Magnesium People", has been developing science-based dietary supplements with a focus on magnesium featuring Sustained Release Technology that controls the release of active ingredients so absorption can happen over time. Every batch of their supplements is triple-tested, and the lab results are posted online for all to see!