Magnesium Complex and Melatonin Supplement: Best Companies • Key Ingredients: Combines five active forms of magnesium (such as magnesium citrate, glycinate, malate, etc.) with vitamin B-6 to enhance its utilization. • Potential Benefits: Believed to help with muscle relaxation, calming nerves, and supporting energy production and metabolic processes in the body. Yes, Jamieson is considered a very strong company with a long-standing reputation in the dietary supplement market. The company was founded in Canada in 1922, meaning it has over 100 years of experience in manufacturing vitamins and minerals. It is classified as the largest manufacturer and distributor of dietary supplements in Canada, and its products are distributed in more than 50 countries worldwide. The company is globally renowned for adhering to extremely strict quality and purity standards known as the "360 Pure Promise". Magnesium. 40 Melatonin. 40