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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-Lysine Defense 1500 mg
Bronson
9 ingredients · Botanical with Nutrients
On Market
L-Lysine Extra Strength 1000 mg
Bronson
9 ingredients · Amino acid/Protein
On Market
L-Lysine Extra Strength 1000 mg
Bronson
9 ingredients · Amino acid/Protein
On Market
L-Lysine Extra Strength 1000 mg
Bronson
9 ingredients · Amino acid/Protein
On Market
L-Lysine HCl 500 mg
Windmill
5 ingredients · Amino acid/Protein
On Market
L-Lysine HCl 500 mg
Foods Plus
5 ingredients · Amino acid/Protein
On Market
L-Lysine Monolaurin 1:1 Ratio
Solaray
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Lysine Monolaurin 1:1 Ratio
Solaray
5 ingredients · Other Combinations
On Market
L-Lysine/L-Proline
Roex
5 ingredients · Amino acid/Protein
On Market
L-Methionine 500 mg
Bluebonnet
4 ingredients · Amino acid/Protein
On Market
L-Methionine 500 mg
Swanson
5 ingredients · Amino acid/Protein
On Market
L-Methylfolate 15mg
Woodstock Vitamins
16 ingredients · Vitamin
On Market
L-Methylfolate 1mg
Woodstock Vitamins
6 ingredients · Vitamin
On Market
L-Methylfolate Calcium 15 mg
Virtus Pharmaceuticals
8 ingredients · Vitamin
On Market
L-OptiZinc 30 mg
Vitacost
5 ingredients · Mineral
On Market
L-OptiZinc Zinc 20 mg
Newflower Farmers Markets
7 ingredients · Mineral
On Market
L-Ornithine 500 mg
Swanson
4 ingredients · Amino acid/Protein
On Market
L-Ornithine 500 mg
Bluebonnet
6 ingredients · Amino acid/Protein
On Market
L-Ornithine 500 mg
Bluebonnet
6 ingredients · Amino acid/Protein
On Market
L-Ornithine 667 mg
Source Naturals
6 ingredients · Amino acid/Protein
On Market
L-Ornithine L-Aspartate 3000 mg
SNS Serious Nutrition Solutions
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Phenylalanine 500 mg
Best Naturals
8 ingredients · Amino acid/Protein
On Market
L-Phenylalanine 500 mg
Source Naturals
7 ingredients · Amino acid/Protein
On Market
L-Phenylalanine 500 mg
Best Naturals
8 ingredients · Amino acid/Protein
On Market
L-Phenylalanine 500 mg
Nutricost
4 ingredients · Amino acid/Protein
On Market
L-Phenylalanine 500 mg
Bluebonnet
5 ingredients · Amino acid/Protein
On Market
L-Phenylalanine Caps 500 mg
Country Life
7 ingredients · Other Combinations
On Market
L-Proline 500 mg
Best Naturals
4 ingredients · Amino acid/Protein
On Market
L-Proline L-Lysine 275 mg / 275 mg
Source Naturals
15 ingredients · Botanical with Nutrients
On Market
L-Pyroglutamic Acid Capsules 500 mg
Nootropics Depot
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Serine 900 mg
Lake Avenue Nutrition
3 ingredients · Amino acid/Protein
On Market
L-Taurine 1000 mg
Kirkman
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Taurine 1000 mg
California Gold Nutrition
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Taurine 1000 mg
Puritan's Pride Premium
8 ingredients · Amino acid/Protein
On Market
L-Taurine 500 mg
Wonder Laboratories
6 ingredients · Other Combinations
On Market
L-Taurine SAP
NFH
3 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 100 mg
Newflower Farmers Markets
6 ingredients · Amino acid/Protein
On Market
L-Theanine 100 mg
The Vitamin Shoppe
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 100 mg
Exchange Select
8 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 100 mg
CHK Nutrition
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 100 mg
Meijer
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 100 mg Mint Flavored
Country Life
15 ingredients · Other Combinations
On Market
L-Theanine 200 mg
AN Amazing Nutrition Amazing Formulas
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Nutralife
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Best Naturals
8 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Source Naturals Serene Science
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Puritan's Pride
7 ingredients · Amino acid/Protein
On Market
L-Theanine 200 mg
Puritan's Pride
7 ingredients · Amino acid/Protein
On Market
L-Theanine 200 mg
Nature's Way
4 ingredients · Amino acid/Protein
On Market
L-Theanine 200 mg
Nature's Way
4 ingredients · Amino acid/Protein
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.