Life Extension, Neuro-Mag, Magnesium L-Threonate, 90 Vegetarian Capsules (48 mg
Magnesium (from 2,000 mg Magtein magnesium L-threonate) 144 mg 34%. Magnesium L-Threonate has less of a laxative effect than other forms of magnesium. Read the entire label and follow the instructions carefully.