I'm another Mg believer. Watched my husband's nightly spasms go from terrible (limbs flying everywhere) to small twitches. He also sleeps deeply, like a baby now. He takes it at night, before heading to bed. According to DIM's research, take zinc with your magnesium, and take Calcium with your D
I have posted this before but worth a try again.
Some minerals will directly affect the metabolisation of others and an increase in one will cause an imbalance or decrease in another. This sometimes works in only one direction.
In the diagram below note that Cadmium (Cd) influences Copper (Cu) and Copper influences Iron (Fe) but the reverse is not true. Excess Sodium (Na) may decrease Potassium (K) and vice verse.
Some vitamins, like minerals, cannot be properly metabolised if certain other vitamins or minerals are not present in sufficient quantities.
Vitamin B3 is a good example: tryptophane requires Vitamins B1, B2, B6, Vitamin C, Magnesium, Zinc and Manganese to be converted to B3, so all these are important for that synthesis. Taking a B3 supplement will not provide useful amounts of this vitamin unless the other vitamins and minerals exist in sufficient quantities to metabolise it.
Calcium is another example. Taking a calcium supplement or eating calcium rich food does not mean that your body absorbs this nutrient. Interactions among nutrients can either help or hinder the absorption of other nutrients. You are more likely to absorb calcium if you are also taking a vitamin D supplement.
Other supplements that aid absorption of calcium include, lactose (milk protein) lysine, potassium, sodium bicarbonate, vitamin B6 and vitamin A. Refined sugar can also assist in metabolising calcium but causes loss of calcium through urine! Some people can obtain more calcium from dairy products than from supplements and taking calcium supplements with food can increase their absorption by 10%.
Taking calcium in the evening is more effective than taking it in the morning. The calcium supplement calcium citrate is probably the most bioavailable of the calcium salts but can increase the undesirable absorption of aluminium! Dr Melvyn Werbach in his book "Foundations of Nutritional Medicine" explains numerous other ways in which simple calcium supplementation may fail or succeed according to the other foods and supplements taken in conjunction with calcium.