Magnesium Complex Supplement， 976mg 4-in-1 Citrate, Glycinate, Malate

What the brand says

Sold as “Magnesium Complex Supplement， 976mg 4-in-1 Citrate, Glycinate, Malate & L-Threonate，| Chelated & Purified | Muscles, Nerve & Heart Health | Non-GMO, 90 Vegan Capsules”