Other Information: Magnesium content 495 mg per teaspoon (5 grams). Misc: Saline laxative/soaking aid. Magnesium sulfate USP. MgSO4. 7H20. Gluten free. Saline laxative for relief of occasional constipation. Soaking aid for minor sprains and bruises. Supervalu Quality Guaranteed: We're committed to your satisfaction and guarantee the quality of this product. Contact us at 1-877-932-7948, or www.supervalu-ourownbrands.com. Please have package available.