NOW Foods Magnesium Bisglycinate Powder provides magnesium in the amino acid chelate form — bound to two glycine molecules — making it one of the most bioavailable and stomach-gentle forms of magnesium available. The glycinate chelate form is absorbed via amino acid transporters rather than the mineral-specific pathways that become saturated at high doses, allowing higher amounts of magnesium to be absorbed without the laxative effect that oxide and citrate forms produce at equivalent doses. Glycine itself also has calming, sleep-supporting properties that complement magnesium's role in muscle relaxation and nervous system function. This powder format allows for flexible dosing and rapid dissolution in water or beverages. Ideal for those who need high magnesium doses for muscle cramps, sleep, anxiety, or cardiovascular support without digestive side effects.