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Non-nutrient/non-botanical · Supplement ingredient

Magnesium

Magnesium is listed on 27,686 U.S. supplement product labels in the NIH DSLD, #3 of 4,614 by label frequency.

27,686
Products
#3 of 4,614
By frequency
NIH
Dosing fact sheet
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Magnesium dosing reference

NIH ODS Fact Sheet →
Recommended Dietary Allowance (RDA / AI)
400–420 mg for adult men, 310–320 mg for adult women
Tolerable Upper Intake Level (UL)
350 mg from supplements only (no UL on dietary intake) for adults
Drug interactions
Reduces absorption of bisphosphonates, quinolone and tetracycline antibiotics. May enhance effect of muscle relaxants.
Pregnancy & lactation
RDA during pregnancy is 350–360 mg; lactation 310–320 mg.

Statement required by FDA: These statements have not been evaluated by the Food and Drug Administration. Dietary supplements are not intended to diagnose, treat, cure, or prevent any disease. Consult a licensed healthcare provider before starting, stopping, or combining any supplement, especially if you are pregnant, nursing, take prescription medication, or have a medical condition.

Source: https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/

How common is Magnesium?

Number of supplement labels listing Magnesium vs nearby non-nutrient/non-botanical ingredients

products
Source NIH Dietary Supplement Label Database (DSLD) As of 2026

Products containing Magnesium

L-Arginine 500 mg
Douglas Cooper Co.
4 ingredients · Amino acid/Protein
On Market
L-Arginine 500 mg
Nutricost
5 ingredients · Amino acid/Protein
On Market
L-Arginine 500 mg
Swanson
3 ingredients · Amino acid/Protein
On Market
L-Arginine 500 mg
AN Amazing Nutrition Amazing Formulas
4 ingredients · Amino acid/Protein
On Market
L-Arginine 500 mg
GNC
7 ingredients · Amino acid/Protein
On Market
L-Arginine 500 mg
California Gold Nutrition
5 ingredients · Amino acid/Protein
On Market
L-Arginine 500 mg
Pure Naturals
4 ingredients · Amino acid/Protein
On Market
L-Arginine 500 mg
Swanson
3 ingredients · Amino acid/Protein
On Market
L-Arginine 500 mg & L-Citrulline 250 mg
Nutricost
5 ingredients · Amino acid/Protein
On Market
L-Arginine 500 mg L-Ornithine 250 mg
Bluebonnet
6 ingredients · Amino acid/Protein
On Market
L-Arginine 500 mg L-Ornithine 250 mg
Bluebonnet
6 ingredients · Amino acid/Protein
On Market
L-Arginine Caps 500 mg
Country Life
6 ingredients · Other Combinations
On Market
L-Arginine Capsules 500 mg
Country Life
5 ingredients · Other Combinations
On Market
L-Arginine Cardio Complete
Herbal Nutrition
29 ingredients · Other Combinations
On Market
L-Arginine Extra Strength
Havasu Nutrition
7 ingredients · Other Combinations
On Market
L-Arginine HCL 1000 mg
NusaPure
5 ingredients · Amino acid/Protein
On Market
L-Arginine HCl 500 mg
Windmill
5 ingredients · Amino acid/Protein
On Market
L-Arginine L-Citrulline Complex 1000 mg
Best Naturals
9 ingredients · Amino acid/Protein
On Market
L-Arginine L-Citrulline Complex 1000 mg
Best Naturals
9 ingredients · Amino acid/Protein
On Market
L-Arginine L-Ornithine
Best Naturals
9 ingredients · Amino acid/Protein
On Market
L-Arginine L-Ornithine 1,500 mg
AN Amazing Nutrition Amazing Formulas
4 ingredients · Amino acid/Protein
On Market
L-Arginine/L-Citrulline Complex 1000 mg
AN Amazing Nutrition Amazing Formulas
10 ingredients · Amino acid/Protein
On Market
L-Arginine1500
Evlution Nutrition
4 ingredients · Amino acid/Protein
On Market
L-Carnitine + Tartrate
ALLMAX
7 ingredients · Other Combinations
On Market
L-Carnitine 1000
GNC Total Lean
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 1000
GNC Total Lean
7 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 1000
GNC Total Lean
7 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 1000 mg
Vitamatic
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 1000 mg
NOW
8 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 1000 mg
NOW
8 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 2000
Body Attack
7 ingredients · Other Combinations
On Market
L-Carnitine 250 mg
Source Naturals
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 250 mg
Source Naturals
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 250 mg
Source Naturals
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 250 mg
NOW
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 250 mg
Klaire Labs
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 250 mg
Windmill
7 ingredients · Other Combinations
On Market
L-Carnitine 500 mg
Meijer Naturals
7 ingredients · Other Combinations
On Market
L-Carnitine 500 mg
Bodybuilding.com Foundation Series
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 500 mg
Bodybuilding.com Foundation Series
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 500 mg
Basic Vitamins
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 500 mg
Nature's Way
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 500 mg
Natural Grocers by Vitamin Cottage
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 500 mg
Wonder Laboratories
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 500 mg
Wonder Laboratories
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 500 mg
Wonder Laboratories
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 500 mg
Jarrow Formulas
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 500 mg
Jarrow Formulas
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 500 mg
NOW
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Carnitine 500 mg
NOW
6 ingredients · Non-Nutrient/Non-Botanical
On Market

Nearby Ingredients in Non-nutrient/non-botanical

Other ingredients in the Non-nutrient/non-botanical category cataloged in the NIH DSLD. Useful for comparing how common different nutrients are across the US supplement market.

Compare Magnesium vs Citric Acid →

Nationwide ingredients with similar DSLD presence

Two peer sets for Magnesium: closest on total DSLD label listings (27,686 here) and closest on distinct brands that list it (2,255 here). Peers exclude the same DSLD category, and rows stay link-disjoint so each axis is a distinct neighborhood.

Similar label frequency

Nearest other ingredients by distinct DSLD product labels (floored at ≥50), outside this category.

Similar brand breadth

Nearest other ingredients by distinct brands listing them (floored at ≥100 brands), distinct from the label-frequency row.

Frequently asked about Magnesium

What is the Recommended Dietary Allowance (RDA) for Magnesium?
400–420 mg for adult men, 310–320 mg for adult women. The RDA is the average daily intake sufficient to meet the nutrient requirements of nearly all (97–98%) healthy people. Source: NIH Office of Dietary Supplements.
Is there an upper limit for Magnesium?
350 mg from supplements only (no UL on dietary intake) for adults (Tolerable Upper Intake Level, UL, the maximum daily intake unlikely to cause adverse health effects in the general population).
Does Magnesium interact with medications?
Reduces absorption of bisphosphonates, quinolone and tetracycline antibiotics. May enhance effect of muscle relaxants. This is a partial list, always discuss supplement use with a pharmacist or prescribing provider.
What about Magnesium during pregnancy or breastfeeding?
RDA during pregnancy is 350–360 mg; lactation 310–320 mg.
How many supplement products contain Magnesium?
27,686 supplement product labels in the NIH DSLD currently lists Magnesium as an ingredient. By label frequency it ranks #3 of 4,614 among ingredients PlainVitamins ranks (same sort as /rankings/most-common-ingredients). Browse them below.

Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD) · Dosing reference: NIH ODS Magnesium Health Professional Fact Sheet. Regulatory reference: Source: Dietary Supplement Health and Education Act (DSHEA), 1994, 21 U.S.C. § 321(ff).

Disclaimer, Not Medical Advice: Information on this page is based on manufacturer-declared label data and is provided for educational and reference purposes only. It does not constitute medical, nutritional, or health advice. Consult a licensed healthcare provider before starting, stopping, or combining any supplement, especially if you are pregnant, nursing, take prescription medication, or have a medical condition.

Every figure on PlainVitamins is rendered directly from the NIH Dietary Supplement Label Database (DSLD), no number is typed in by an editor. Ingredient figures are computed directly from the NIH DSLD, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.