Just last weekend I heard about magnesium deficiency from a local doc on a radio show. The trick seems to be the matter of absorption. He suggested chelated and said others say take with calcium (I think?)
I personally like the vinegar and Milk of Magnesia approach. When you first mux them, it is cloudy. As you continue to stir it, (assuming you used distilled vinegar), it will soon become totally clear.
Then, you basically have ionic magnesium, and I have never had the “normal” reaction to too much magnesium.
(the normal reaction is for your intestines to flll with fluid and it all has to go somewhere...)
Magnesium is a weak calcium channel blocker. Calcium and Mg use the same channel and compete for absorption. I do not take them together. If you must take both, take calcium in the a.m., magnesium in p.m.
I take a supplement that contains calcium, magnesium and zinc. Have been taking it for years to help with fibromyalgia. Sure helps me.