I have chronic pain and Magnesium is helpful to combat me having muscle spasms. I take 2 as recommended as a daily serving to help make my spasms lessen. I also have nerve issues which is another reason I take them as a preventative measure. They have 1300 mg per serving which is 52 % of the daily value recommended. I also use my own topical Magnesium Spray as well to help with my chronic pain. I also like they are considered vegetarian. I rate this product 4 out of 5 stars. I received this product free. This is my honest and unbiased review.