A form of magnesium

Magnesium chloride supplements

95 magnesium products in the NIH label database list magnesium as magnesium chloride (under 1% of the 15,088 magnesium products); their median is 75 mg of magnesium per serving, against 86 mg across all magnesium products; the 23 whose only supplement ingredient is magnesium list a median of 120 mg (DSLD version 9.4.0, January 2026).

How does magnesium chloride compare with the other forms?

The median amount of magnesium per serving in products naming each form; the count in brackets. The amount is the magnesium the label gives, as printed (the Supplement Facts row normally states the element; a row named as the compound usually gives the compound's weight and is left out of these figures).

Median magnesium per serving by form

Magnesium by formMagnesium oxide100 mg (5,110)Magnesium citrate113 mg (2,739)Magnesium glycinate113 mg (1,307)Magnesium aspartate150 mg (1,038)Magnesium malate100 mg (903)Magnesium carbonate100 mg (401)Magnesium gluconate100 mg (254)Magnesium hydroxide60 mg (211)Magnesium taurate300 mg (139)Magnesium chloride75 mg (95)Magnesium L-threonate144 mg (72)Magnesium lactate55 mg (55)Magnesium orotate71.5 mg (37)
Magnesium by formMagnesium oxide100 mg (5,110)Magnesium citrate113 mg (2,739)Magnesium glycinate113 mg (1,307)Magnesium aspartate150 mg (1,038)Magnesium malate100 mg (903)Magnesium carbonate100 mg (401)Magnesium gluconate100 mg (254)Magnesium hydroxide60 mg (211)Magnesium taurate300 mg (139)Magnesium chloride75 mg (95)Magnesium L-threonate144 mg (72)Magnesium lactate55 mg (55)Magnesium orotate71.5 mg (37)
Magnesium by formMagnesium oxide100 mg (5,110)Magnesium citrate113 mg (2,739)Magnesium glycinate113 mg (1,307)Magnesium aspartate150 mg (1,038)Magnesium malate100 mg (903)Magnesium carbonate100 mg (401)Magnesium gluconate100 mg (254)Magnesium hydroxide60 mg (211)Magnesium taurate300 mg (139)Magnesium chloride75 mg (95)Magnesium L-threonate144 mg (72)Magnesium lactate55 mg (55)Magnesium orotate71.5 mg (37)
Magnesium by formMagnesium oxide100 mg (5,110)Magnesium citrate113 mg (2,739)Magnesium glycinate113 mg (1,307)Magnesium aspartate150 mg (1,038)Magnesium malate100 mg (903)Magnesium carbonate100 mg (401)Magnesium gluconate100 mg (254)Magnesium hydroxide60 mg (211)Magnesium taurate300 mg (139)Magnesium chloride75 mg (95)Magnesium L-threonate144 mg (72)Magnesium lactate55 mg (55)Magnesium orotate71.5 mg (37)
Magnesium by formMagnesium oxide100 mg (5,110)Magnesium citrate113 mg (2,739)Magnesium glycinate113 mg (1,307)Magnesium aspartate150 mg (1,038)Magnesium malate100 mg (903)Magnesium carbonate100 mg (401)Magnesium gluconate100 mg (254)Magnesium hydroxide60 mg (211)Magnesium taurate300 mg (139)Magnesium chloride75 mg (95)Magnesium L-threonate144 mg (72)Magnesium lactate55 mg (55)Magnesium orotate71.5 mg (37)

Source: Supplement Facts rows and their forms, NIH ODS Dietary Supplement Label Database version 9.4.0, current labels.

Products
9581 on the market
Median magnesium per serving
75 mgall magnesium products: 86 mg
Share of magnesium products
under 1%95 of 15,088

Is the amount the magnesium or the whole magnesium chloride?

A Supplement Facts row normally states the magnesium itself (a row like "Magnesium (as magnesium chloride)"); a row named as the compound (a row like "Magnesium chloride") usually states the compound's weight, which includes what the magnesium is bound to and is larger than the magnesium it supplies. The front of a bottle may print either. Of the 95 products here, 93 give the magnesium in its own row; 1 gives only a row named as the compound, left out of the medians and counts on this site; 1 give no amount of their own or one in another unit.

The adult Tolerable Upper Intake Level for magnesium is 350 mg a day; it covers magnesium from supplements and medicines only, not food or water. At the most servings their labels direct, 10 of the 93 magnesium chloride products with a plausible amount (10.8%) give more than that.

Source: Supplement Facts rows of each product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; upper limit: Institute of Medicine Dietary Reference Intakes (2011) (what counts as plausible).

What else do these products contain?

Ingredients most often listed alongside it, with the median amount in these products and in all products
IngredientShare of these productsMedian hereMedian, all products
Calcium52% 21.25 mg115 mg
Potassium47% 26 mg99 mg
Vitamin B624% 3.4 mg6 mg
Caffeine23% 158 mg200 mg
Vitamin B1223% 35 mcg36 mcg
Beta-Alanine20% 2 g
Zinc20% 5 mg11 mg
N-Acetyl Tyrosine16% 250 mg
Chloride16% 500 mg75 mg
Niacin15% 12.5 mg20 mg

Which products are they?

60 of the 95 (on-market products first, the newest label first), ordered by the amount of magnesium per serving, largest first; an amount that looks like a slip or a compound's weight comes last, marked.

Source: NIH ODS Dietary Supplement Label Database version 9.4.0; the form each label names for its row. Daily Values: the FDA's Daily Value page.

Which brands make them?

VPX (15), Good State (13), Cellucor (7), AM Angstrom Minerals (6), Kirkman (5), Core Nutritionals (4), Good State Plasma (4), Cardiovascular Research (3), Trace Minerals Research (3), Twinlab (2).

Where next?