Nature's Field Magnesium Glycinate 400mg delivers a high-potency, highly bioavailable form of magnesium, expertly formulated to support muscle relaxation, nerve function, and overall calm. Each bottle contains 90 easy-to-swallow tablets designed to help ease muscle cramps, support healthy sleep quality, and promote cardiovascular and bone health. Gentle on the stomach, it is an ideal daily supplement to help reduce everyday stress, combat fatigue, and maintain optimal mineral balance.