Qualitest Magnesium Oxide Tablets, 420 Mg, 100 Count (2)

What the brand says

Qualitest Magnesium Oxide Tablets, 420 mg, are formulated to supply elemental magnesium in a compact tablet format. Each tablet contains 420 milligrams of magnesium oxide and is designed for once-daily use or as directed by a professional. Packaged in two bottles, each containing 100 tablets, this product is intended for routine dietary supplementation of magnesium. Manufactured under standardized conditions, each bottle is labeled with complete ingredient and usage information.