Magnesium Carbonate

Magnesium is a vital mineral that is commonly under supplemented. 

Low Magnesium symptoms include:
Tics, cramps, irregular heart rhythms, sensitive hearing, insomnia, depression, fatigue, anxiety, and even seizures. 

Magnesium carbonate powder does not dissolve in water. Because of its insolubility, it's often used in table salts to prevent clumping. It's often referred to as "chalk," and used by athletes as a drying agent to aid with grip in sports like rock climbing, gymnastics, baseball, and weight lifting.

Mag Carb can be added directly to ascorbic acid to make Magnesium Ascorbate, a mineral version of vitamin c. Use 1/4 teaspoon Mag Carb + 1 - 1.5 teaspoons AA