uget1shot, I am taking the Nutrabio magnesium on Amazon. 120 capsules for around $15. 200 mg. This has Magnesium Malate & Magnesium Bisglycinate chelate. I DO NOT take this when I take my Linzess. I take this during the day and Linzess at bedtime. I hope this helps. Praying much for you to get relief.