Source Naturals Magtein 2,000mg Serving Magnesium L-Threonate

What the brand says

Sold as “Source Naturals Magtein 2,000mg Serving Magnesium L-Threonate Supplement - Advanced Cognitive Health, Memory & Learning Support - 45 Capsules”

Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.