Cyndy, I finally saw this. We were snowed in at our sons's house in Lewistown, MT. I take: 3- 4oo mg Magnesium oxide ( pure, I guess so):>) plus 2 Cal Mag with 333 mg. Ca and 133 mg. Magnesium oxide. Currently Spring Valley, cheap at Walmart. 2 to 4 1000 mg. Triphalla pills Planetary Formula or NOW 500 mg./about 6 of these. For the 500 mg. directions: take 3 tablets one to three times daily between meals. Bob's Red Mill organic ground flaxseed, 3 T all at once in rice milk. This can be very flexible, whatever you want to do. I'm not sure about this, but it works for me. It all seems harmless, except for maybe too much calcium, which is constipating. Donnatol is working very well, only wake up once or twice a night with cramps. I still had to take 4 T Milk of Mag this week to get things moving. Hope this helps. Bette.