Greenway Biotech, Inc. Magnesium Chloride USP Supplement 100% Edible

What the brand says

Sold as “Greenway Biotech, Inc. Magnesium Chloride USP Supplement 100% Edible Cloruro de Magnesio Comestible Powder (Pharmaceutical Grade) | Pure Ph. EUR., BP, USP | 1 Pound”