It’s magnesium, (a mineral,) plus taurine, (an amino acid.)

Magnesium citrate, this is magnesium with citric acid, (a weak organic acid derived from citrus fruits. It has good bio availability absorbed via the GI tract.

Magnesium oxide. From a chemistry perspective this is a type of salt. Poor bio availability via the GI tract, can use used to treat indigestion and constipation.

Magnesium chloride. Also a salt. This is also well absorbed by the GI tract. (It’s like sodium chloride, table salt, but with magnesium instead.

Magnesium lactate. This is a salt formed when magnesium hooks up with lactic acid. This can be produced by your body during intense exercise. It’s also a food preservative and generally isn’t used as a dietary supplement.

Magnesium malate is magnesium plus malic acid. Malic acid, (another weak organic acid,) can be found in fruit. This form is also well absorbed via the GI tract.

Magnesium L-threonate s the salt formed from mixing magnesium and threonic acid, a water-soluble substance derived from the metabolic breakdown of vitamin C. It’s also easily absorbed via the GI tract.

Magnesium sulfate is formed by combining magnesium, sulfur, and oxygen. It’s commonly known as Epsom salt. It can ease constipation, but isn’t something you should be taking orally long term. Prolonged usage when you have certain health conditions can fuck your kidneys up, or cause magnesium toxicity.

Magnesium glycinate is formed from elemental magnesium and the amino acid glycine. Easily absorbed via digestion.

Magnesium orotate includes orotic acid, a natural substance involved in your body’s construction of genetic material, including DNA It’s easily absorbed and doesn’t have the strong laxative effects characteristic of other forms.