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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-Theanine 200 mg
Source Naturals Serene Science
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Nature's Truth
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Woodstock Vitamins
7 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Bluebonnet
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Bluebonnet
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Country Life
5 ingredients · Other Combinations
On Market
L-Theanine 200 mg
Nature's Way
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Bluebonnet
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Nature's Way
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Country Life
5 ingredients · Other Combinations
On Market
L-Theanine 200 mg
Nature's Lab
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg Sweet Cherry
EZ Melts
11 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 250 mg
Kirkman
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 300
Everyday Health
3 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine Calm Caps
Nature's Truth
11 ingredients · Other Combinations
On Market
L-Theanine Capsules 200 mg
Nootropics Depot
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine Chewable 200 mg Tropical Fruit
Nature Made
14 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine Chewables 200 mg Natural Lemon Lime Flavor
Solaray
20 ingredients · Other Combinations
On Market
L-Theanine Extra Strength
BRI Nutrition
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Threonine 500 mg
Vitamatic
5 ingredients · Amino acid/Protein
On Market
L-Tryptophan 1,000 mg
AN Amazing Nutrition Amazing Formulas
6 ingredients · Amino acid/Protein
On Market
L-Tryptophan 1000 mg
AN Amazing Nutrition Amazing Formulas
3 ingredients · Amino acid/Protein
On Market
L-Tryptophan 1000 mg
Protocol For Life Balance
7 ingredients · Amino acid/Protein
On Market
L-Tryptophan 1500 mg
NusaPure
3 ingredients · Amino acid/Protein
On Market
L-Tryptophan 1500 mg
NusaPure
3 ingredients · Amino acid/Protein
On Market
L-Tryptophan 500 mg
The Vitamin Shoppe
5 ingredients · Amino acid/Protein
On Market
L-Tryptophan 500 mg
Swanson
5 ingredients · Amino acid/Protein
On Market
L-Tryptophan 500 mg
AN Amazing Nutrition Amazing Formulas
3 ingredients · Amino acid/Protein
On Market
L-Tryptophan 500 mg
Bronson Laboratories
7 ingredients · Amino acid/Protein
On Market
L-Tryptophan 500 mg
Advanced Nutrition by Zahler
5 ingredients · Amino acid/Protein
On Market
L-Tryptophan 500 mg
Jarrow Formulas
5 ingredients · Amino acid/Protein
On Market
L-Tryptophan 500 mg
Best Naturals
4 ingredients · Amino acid/Protein
On Market
L-Tryptophan 500 mg
Best Naturals
4 ingredients · Amino acid/Protein
On Market
L-Tryptophan 500 mg
Source Naturals
8 ingredients · Amino acid/Protein
On Market
L-Tryptophan 500 mg
Bluebonnet
4 ingredients · Amino acid/Protein
On Market
L-Tryptophan 500 mg
Bluebonnet
4 ingredients · Amino acid/Protein
On Market
L-Tryptophan 500 mg
Nutricost
6 ingredients · Botanical with Nutrients
On Market
L-Tryptophan 500 mg
Jarrow Formulas
6 ingredients · Amino acid/Protein
On Market
L-Tryptophan 500 mg
longlifenutri
3 ingredients · Amino acid/Protein
On Market
L-Tryptophan 500 mg
AN Amazing Nutrition Amazing Formulas
4 ingredients · Amino acid/Protein
On Market
L-Tryptophan 500 mg
Bluebonnet
5 ingredients · Amino acid/Protein
On Market
L-Tryptophan 500 mg
Bluebonnet
5 ingredients · Amino acid/Protein
On Market
L-Tryptophan 500 mg
Swanson
4 ingredients · Amino acid/Protein
On Market
L-Tryptophan 500 Milligrams
Montiff
4 ingredients · Amino acid/Protein
On Market
L-Tryptophan Extra Strength 1500 mg
BRI Nutrition
4 ingredients · Other Combinations
On Market
L-Tyrosine 500 mg
Swanson
5 ingredients · Amino acid/Protein
On Market
L-Tyrosine 500 mg
Bronson
5 ingredients · Amino acid/Protein
On Market
L-Tyrosine 500 mg
Jarrow Formulas
5 ingredients · Amino acid/Protein
On Market
L-Tyrosine 500 mg
Best Naturals
4 ingredients · Amino acid/Protein
On Market
L-Tyrosine 500 mg
Best Naturals
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.