most people get enough calcium in the diet. Even today, we have it added to
foods as well... calcium enhanced orange juice, cheese, cereals.

Please, read the link Chemar posted here.

Most people should start at 1/2 the RDA for elemental magnesium.
On that thread I explain that. The estimate is that most people who are low in mag are about 50% low. Much lower than that and you are potentially ill, and at cardiac risk, and typically are identified by doctors.

Combined products often use magnesium oxide either 100% or at least the
majority of it. They may say "contains magnesium from oxide and chelate"
which means mostly oxide. The oxide form is not well absorbed and basically useless.

If you decide to use larger doses of magnesium, you need to be sure you have normal kidney functioning. People with kidney damage do not excrete magnesium and may become toxic if they use large amounts.

I like Chemar's advice... because the magnesium taurate does not have alot of elemental magnesium in it. By taking them separately taurine + magnesium you can be sure of what you are getting and alter the ratios if you need to do so.

Magnesium is very useful for TS. It is also essential to metabolize Omega-3's in the diet to long chain fatty acids, which are used in the brain.