Magnesium is mineral supplement and important for the normal functioning of cells, nerves, muscles, bones and heart. Though well balanced diets normally should provide the necessary amounts, sometimes due to certain situations (medical and metabolism problems) the body can lose magnesium faster than diet can replace it. Prior to taken any supplements consult with your doctor or pharmacist. There are different magnesium supplements ( Magnesium oxide, Magnesium Citrate, Magnesium Glycinate, etc.) and which one type one should use depends on your particular circumstances and needs. In regards to Magnesium glycinate (also called Magnesium bisglycinate), the magnesium is combined with an amino acid called glycine. Glycine works alongside many neurotransmitters (chemicals in your brain), like GABA, to promote feelings of calm. Glycine may also improve sleep quality and promote a healthy circadian rhythm. Magnesium bisglycinate is a magnesium supplement that is generally well-tolerated, absorbed in the body and tends to cause less stomach upsets as it does not require stomach acidity to be absorbed. Product is made in Canada and is GMP certified which means that the manufacturer has demonstrated a strong regulatory commitment and compliance to international standards. We found with taking this particular magnesium supplement that we had far less digestive problems.