Sports Research Magtein Magnesium L-Threonate 48 mg - 90 Veggie Capsules (48 mg per
From Macy's
Advanced Formula 2,000 mg Magnesium L-Threonate Supports Cognitive Health Dietary Supplement Quality Matters: Non Gmo Project Verified Nsf Certified Gluten Free Third Party Tested cGMP Compliant Certified Nutrition - American Vegetarian Association Magnesium L-Threonate has been shown to cross the blood-brain barrier unlike other magnesium forms like glycinate, citrate, or oxide.