Established 1971 With Silica Gluten-Free Helps Relax Muscles Supports a Healthy Immune System Essential for Proper Calcium Utilization Dietary Supplement Kosher — Our Pledge of Integrity — Authenticity Cleanliness Freshness Consistency Accuracy Magnesium is needed for more than 300 biochemical reactions in the body. It helps to relax muscles and to maintain an already normal blood flow. It can also support a steady heart rhythm and a healthy immune system, as well as keep bones strong. This product has been manufactured at a GMP Registered facility.