Trace Minerals Stress-X Magnesium Powder (350 mg per serving) supports muscle relaxation, recovery, and restful sleep. This highly absorbable formula combines magnesium malate and carbonate with ionic trace minerals from ConcenTrace for daily health support. Mix 1 level tsp in 4–12 oz of water and drink once or twice daily, with or without food. Lemon Lime flavor. 7.9 oz (50 servings).