Equal elemental amount · snapshot 2026-08-10

Magnesium chloride vs Magnesium gluconate

For 200 mg elemental magnesium, magnesium chloride requires 783–1,672 mg of compound and magnesium gluconate requires 3,413 mg, using the chemistry accompanying the 2026-08-10 label snapshot. This difference follows from the magnesium fraction of each compound. It requires no absorption-study assumption: the same elemental mass travels with a different mass of the rest of the compound.

Show the working

Same elemental amount, different compound mass

At 100, 200 and 400 mg elemental magnesium, the chemistry accompanying the 2026-08-10 snapshot uses 11.96–25.53% magnesium by mass for magnesium chloride and 5.86% for magnesium gluconate; dividing the elemental amount by these fractions gives the compound masses below.

Formula, magnesium fraction and compound mass · snapshot context 2026-08-10
Property	Magnesium chloride	Magnesium gluconate
Elemental Mg by compound mass	11.96–25.53%	5.86%
Anhydrous reference formula	MgCl₂	Mg(C₆H₁₁O₇)₂
Molar mass of that reference formula	95.21 g/mol	414.60 g/mol
Composition interval	anhydrous 25.5%, hexahydrate 12.0%	One formula fraction used for Mg(C₆H₁₁O₇)₂ in this model.
Compound for 100 mg elemental Mg	392–836 mg	1,706 mg
Compound for 200 mg elemental Mg	783–1,672 mg	3,413 mg
Compound for 400 mg elemental Mg	1,567–3,344 mg	6,826 mg
Size 00 capsules for 100 mg elemental Mg	1–2 capsules at 730 mg compound fill each	3 capsules at 730 mg compound fill each
Size 00 capsules for 200 mg elemental Mg	2–3 capsules at 730 mg compound fill each	5 capsules at 730 mg compound fill each
Size 00 capsules for 400 mg elemental Mg	3–5 capsules at 730 mg compound fill each	10 capsules at 730 mg compound fill each

Molar masses refer to the displayed anhydrous formulas. Hydrated or composition-ambiguous readings use the full fraction interval from the chemistry layer. Compound masses are rounded to whole milligrams; capsule counts round the unrounded mass divided by 730 mg upward at each interval endpoint.

Magnesium chloride: 200 mg worked example

For 200 mg elemental magnesium as magnesium chloride, the chemistry accompanying the 2026-08-10 snapshot requires 783–1,672 mg of compound: 200 ÷ 0.2553 through 200 ÷ 0.1196, rounded to whole milligrams.

That requires 2–3 size 00 capsules at 730 mg of compound per capsule, before other ingredients. The mass interval reflects anhydrous 25.5%, hexahydrate 12.0%.

Magnesium gluconate: 200 mg worked example

For 200 mg elemental magnesium as magnesium gluconate, the chemistry accompanying the 2026-08-10 snapshot requires 3,413 mg of compound: 200 ÷ 0.0586, rounded to whole milligrams.

That requires 5 size 00 capsules at 730 mg of compound per capsule, before other ingredients. The model uses the Mg(C₆H₁₁O₇)₂ fraction throughout.

Compound mass reference in 25 mg elemental increments

40 arithmetic inputs from 25 to 1,000 mg elemental magnesium are converted below using the two salt fractions and the capsule capacities accompanying the 2026-08-10 snapshot, calculated 2026-09-13. These are mass-conversion inputs, independent of any consumption schedule.

Each compound interval divides the elemental input by the high and low magnesium fractions. Each capsule interval divides those unrounded compound masses by the listed fill capacity, then rounds upward. The three capsule sizes use 545, 730 and 1100 mg of compound per capsule respectively, before other ingredients.

Magnesium chloride and Magnesium gluconate · 40 elemental inputs · 2026-09-13
Elemental Mg	Magnesium chloride: compound mass	Magnesium chloride: size 0	Magnesium chloride: size 00	Magnesium chloride: size 000	Magnesium gluconate: compound mass	Magnesium gluconate: size 0	Magnesium gluconate: size 00	Magnesium gluconate: size 000
25 mg elemental Mg	98–209 mg compound	1 capsules at 545 mg fill	1 capsules at 730 mg fill	1 capsules at 1100 mg fill	427 mg compound	1 capsules at 545 mg fill	1 capsules at 730 mg fill	1 capsules at 1100 mg fill
50 mg elemental Mg	196–418 mg compound	1 capsules at 545 mg fill	1 capsules at 730 mg fill	1 capsules at 1100 mg fill	853 mg compound	2 capsules at 545 mg fill	2 capsules at 730 mg fill	1 capsules at 1100 mg fill
75 mg elemental Mg	294–627 mg compound	1–2 capsules at 545 mg fill	1 capsules at 730 mg fill	1 capsules at 1100 mg fill	1,280 mg compound	3 capsules at 545 mg fill	2 capsules at 730 mg fill	2 capsules at 1100 mg fill
100 mg elemental Mg	392–836 mg compound	1–2 capsules at 545 mg fill	1–2 capsules at 730 mg fill	1 capsules at 1100 mg fill	1,706 mg compound	4 capsules at 545 mg fill	3 capsules at 730 mg fill	2 capsules at 1100 mg fill
125 mg elemental Mg	490–1,045 mg compound	1–2 capsules at 545 mg fill	1–2 capsules at 730 mg fill	1 capsules at 1100 mg fill	2,133 mg compound	4 capsules at 545 mg fill	3 capsules at 730 mg fill	2 capsules at 1100 mg fill
150 mg elemental Mg	588–1,254 mg compound	2–3 capsules at 545 mg fill	1–2 capsules at 730 mg fill	1–2 capsules at 1100 mg fill	2,560 mg compound	5 capsules at 545 mg fill	4 capsules at 730 mg fill	3 capsules at 1100 mg fill
175 mg elemental Mg	685–1,463 mg compound	2–3 capsules at 545 mg fill	1–3 capsules at 730 mg fill	1–2 capsules at 1100 mg fill	2,986 mg compound	6 capsules at 545 mg fill	5 capsules at 730 mg fill	3 capsules at 1100 mg fill
200 mg elemental Mg	783–1,672 mg compound	2–4 capsules at 545 mg fill	2–3 capsules at 730 mg fill	1–2 capsules at 1100 mg fill	3,413 mg compound	7 capsules at 545 mg fill	5 capsules at 730 mg fill	4 capsules at 1100 mg fill
225 mg elemental Mg	881–1,881 mg compound	2–4 capsules at 545 mg fill	2–3 capsules at 730 mg fill	1–2 capsules at 1100 mg fill	3,840 mg compound	8 capsules at 545 mg fill	6 capsules at 730 mg fill	4 capsules at 1100 mg fill
250 mg elemental Mg	979–2,090 mg compound	2–4 capsules at 545 mg fill	2–3 capsules at 730 mg fill	1–2 capsules at 1100 mg fill	4,266 mg compound	8 capsules at 545 mg fill	6 capsules at 730 mg fill	4 capsules at 1100 mg fill
275 mg elemental Mg	1,077–2,299 mg compound	2–5 capsules at 545 mg fill	2–4 capsules at 730 mg fill	1–3 capsules at 1100 mg fill	4,693 mg compound	9 capsules at 545 mg fill	7 capsules at 730 mg fill	5 capsules at 1100 mg fill
300 mg elemental Mg	1,175–2,508 mg compound	3–5 capsules at 545 mg fill	2–4 capsules at 730 mg fill	2–3 capsules at 1100 mg fill	5,119 mg compound	10 capsules at 545 mg fill	8 capsules at 730 mg fill	5 capsules at 1100 mg fill
325 mg elemental Mg	1,273–2,717 mg compound	3–5 capsules at 545 mg fill	2–4 capsules at 730 mg fill	2–3 capsules at 1100 mg fill	5,546 mg compound	11 capsules at 545 mg fill	8 capsules at 730 mg fill	6 capsules at 1100 mg fill
350 mg elemental Mg	1,371–2,926 mg compound	3–6 capsules at 545 mg fill	2–5 capsules at 730 mg fill	2–3 capsules at 1100 mg fill	5,973 mg compound	11 capsules at 545 mg fill	9 capsules at 730 mg fill	6 capsules at 1100 mg fill
375 mg elemental Mg	1,469–3,135 mg compound	3–6 capsules at 545 mg fill	3–5 capsules at 730 mg fill	2–3 capsules at 1100 mg fill	6,399 mg compound	12 capsules at 545 mg fill	9 capsules at 730 mg fill	6 capsules at 1100 mg fill
400 mg elemental Mg	1,567–3,344 mg compound	3–7 capsules at 545 mg fill	3–5 capsules at 730 mg fill	2–4 capsules at 1100 mg fill	6,826 mg compound	13 capsules at 545 mg fill	10 capsules at 730 mg fill	7 capsules at 1100 mg fill
425 mg elemental Mg	1,665–3,554 mg compound	4–7 capsules at 545 mg fill	3–5 capsules at 730 mg fill	2–4 capsules at 1100 mg fill	7,253 mg compound	14 capsules at 545 mg fill	10 capsules at 730 mg fill	7 capsules at 1100 mg fill
450 mg elemental Mg	1,763–3,763 mg compound	4–7 capsules at 545 mg fill	3–6 capsules at 730 mg fill	2–4 capsules at 1100 mg fill	7,679 mg compound	15 capsules at 545 mg fill	11 capsules at 730 mg fill	7 capsules at 1100 mg fill
475 mg elemental Mg	1,861–3,972 mg compound	4–8 capsules at 545 mg fill	3–6 capsules at 730 mg fill	2–4 capsules at 1100 mg fill	8,106 mg compound	15 capsules at 545 mg fill	12 capsules at 730 mg fill	8 capsules at 1100 mg fill
500 mg elemental Mg	1,958–4,181 mg compound	4–8 capsules at 545 mg fill	3–6 capsules at 730 mg fill	2–4 capsules at 1100 mg fill	8,532 mg compound	16 capsules at 545 mg fill	12 capsules at 730 mg fill	8 capsules at 1100 mg fill
525 mg elemental Mg	2,056–4,390 mg compound	4–9 capsules at 545 mg fill	3–7 capsules at 730 mg fill	2–4 capsules at 1100 mg fill	8,959 mg compound	17 capsules at 545 mg fill	13 capsules at 730 mg fill	9 capsules at 1100 mg fill
550 mg elemental Mg	2,154–4,599 mg compound	4–9 capsules at 545 mg fill	3–7 capsules at 730 mg fill	2–5 capsules at 1100 mg fill	9,386 mg compound	18 capsules at 545 mg fill	13 capsules at 730 mg fill	9 capsules at 1100 mg fill
575 mg elemental Mg	2,252–4,808 mg compound	5–9 capsules at 545 mg fill	4–7 capsules at 730 mg fill	3–5 capsules at 1100 mg fill	9,812 mg compound	19 capsules at 545 mg fill	14 capsules at 730 mg fill	9 capsules at 1100 mg fill
600 mg elemental Mg	2,350–5,017 mg compound	5–10 capsules at 545 mg fill	4–7 capsules at 730 mg fill	3–5 capsules at 1100 mg fill	10,239 mg compound	19 capsules at 545 mg fill	15 capsules at 730 mg fill	10 capsules at 1100 mg fill
625 mg elemental Mg	2,448–5,226 mg compound	5–10 capsules at 545 mg fill	4–8 capsules at 730 mg fill	3–5 capsules at 1100 mg fill	10,666 mg compound	20 capsules at 545 mg fill	15 capsules at 730 mg fill	10 capsules at 1100 mg fill
650 mg elemental Mg	2,546–5,435 mg compound	5–10 capsules at 545 mg fill	4–8 capsules at 730 mg fill	3–5 capsules at 1100 mg fill	11,092 mg compound	21 capsules at 545 mg fill	16 capsules at 730 mg fill	11 capsules at 1100 mg fill
675 mg elemental Mg	2,644–5,644 mg compound	5–11 capsules at 545 mg fill	4–8 capsules at 730 mg fill	3–6 capsules at 1100 mg fill	11,519 mg compound	22 capsules at 545 mg fill	16 capsules at 730 mg fill	11 capsules at 1100 mg fill
700 mg elemental Mg	2,742–5,853 mg compound	6–11 capsules at 545 mg fill	4–9 capsules at 730 mg fill	3–6 capsules at 1100 mg fill	11,945 mg compound	22 capsules at 545 mg fill	17 capsules at 730 mg fill	11 capsules at 1100 mg fill
725 mg elemental Mg	2,840–6,062 mg compound	6–12 capsules at 545 mg fill	4–9 capsules at 730 mg fill	3–6 capsules at 1100 mg fill	12,372 mg compound	23 capsules at 545 mg fill	17 capsules at 730 mg fill	12 capsules at 1100 mg fill
750 mg elemental Mg	2,938–6,271 mg compound	6–12 capsules at 545 mg fill	5–9 capsules at 730 mg fill	3–6 capsules at 1100 mg fill	12,799 mg compound	24 capsules at 545 mg fill	18 capsules at 730 mg fill	12 capsules at 1100 mg fill
775 mg elemental Mg	3,036–6,480 mg compound	6–12 capsules at 545 mg fill	5–9 capsules at 730 mg fill	3–6 capsules at 1100 mg fill	13,225 mg compound	25 capsules at 545 mg fill	19 capsules at 730 mg fill	13 capsules at 1100 mg fill
800 mg elemental Mg	3,134–6,689 mg compound	6–13 capsules at 545 mg fill	5–10 capsules at 730 mg fill	3–7 capsules at 1100 mg fill	13,652 mg compound	26 capsules at 545 mg fill	19 capsules at 730 mg fill	13 capsules at 1100 mg fill
825 mg elemental Mg	3,231–6,898 mg compound	6–13 capsules at 545 mg fill	5–10 capsules at 730 mg fill	3–7 capsules at 1100 mg fill	14,078 mg compound	26 capsules at 545 mg fill	20 capsules at 730 mg fill	13 capsules at 1100 mg fill
850 mg elemental Mg	3,329–7,107 mg compound	7–14 capsules at 545 mg fill	5–10 capsules at 730 mg fill	4–7 capsules at 1100 mg fill	14,505 mg compound	27 capsules at 545 mg fill	20 capsules at 730 mg fill	14 capsules at 1100 mg fill
875 mg elemental Mg	3,427–7,316 mg compound	7–14 capsules at 545 mg fill	5–11 capsules at 730 mg fill	4–7 capsules at 1100 mg fill	14,932 mg compound	28 capsules at 545 mg fill	21 capsules at 730 mg fill	14 capsules at 1100 mg fill
900 mg elemental Mg	3,525–7,525 mg compound	7–14 capsules at 545 mg fill	5–11 capsules at 730 mg fill	4–7 capsules at 1100 mg fill	15,358 mg compound	29 capsules at 545 mg fill	22 capsules at 730 mg fill	14 capsules at 1100 mg fill
925 mg elemental Mg	3,623–7,734 mg compound	7–15 capsules at 545 mg fill	5–11 capsules at 730 mg fill	4–8 capsules at 1100 mg fill	15,785 mg compound	29 capsules at 545 mg fill	22 capsules at 730 mg fill	15 capsules at 1100 mg fill
950 mg elemental Mg	3,721–7,943 mg compound	7–15 capsules at 545 mg fill	6–11 capsules at 730 mg fill	4–8 capsules at 1100 mg fill	16,212 mg compound	30 capsules at 545 mg fill	23 capsules at 730 mg fill	15 capsules at 1100 mg fill
975 mg elemental Mg	3,819–8,152 mg compound	8–15 capsules at 545 mg fill	6–12 capsules at 730 mg fill	4–8 capsules at 1100 mg fill	16,638 mg compound	31 capsules at 545 mg fill	23 capsules at 730 mg fill	16 capsules at 1100 mg fill
1000 mg elemental Mg	3,917–8,361 mg compound	8–16 capsules at 545 mg fill	6–12 capsules at 730 mg fill	4–8 capsules at 1100 mg fill	17,065 mg compound	32 capsules at 545 mg fill	24 capsules at 730 mg fill	16 capsules at 1100 mg fill

A whole capsule count describes the minimum number of modelled containers needed to hold compound mass. It does not establish the dimensions, packing density or excipient content of a retail product. The ingredient list and serving statement on each linked record supply the product-specific context.

Declarations against capacity

How each salt's capsule labels distribute

In the 2026-08-10 snapshot, the magnesium chloride form group has 0 audited capsule labels and the magnesium gluconate group has 2; their distributions below use the mass-budget counts stored for each form, at powder density 0.6–0.8 g/mL.

Capsule mass budgets within each form group · 2026-08-10
Salt group	All labels	Audited capsules	Fits 0/00	Needs 000	Exceeds 000
Magnesium chloride	19	0	0	0	0
Magnesium gluconate	20	2	2	0	0

At 2026-08-10, magnesium chloride has 0 of 0 audited capsule labels at or below 730 mg minimum compound mass per capsule, 0 above 730 mg but at or below 1100 mg, and 0 above 1100 mg. Its other 19 labels have no capsule verdict in this group, either because they are not classified as capsules or because a mass budget is unavailable.

At 2026-08-10, magnesium gluconate has 2 of 2 audited capsule labels at or below 730 mg minimum compound mass per capsule, 0 above 730 mg but at or below 1100 mg, and 0 above 1100 mg. Its other 18 labels have no capsule verdict in this group, either because they are not classified as capsules or because a mass budget is unavailable.

The audit divides a label's elemental amount by its assigned salt fraction and serving-unit count. It uses the highest fraction, hence the smallest required mass. A hydration interval can move a nominally fitting label into a larger size at its high-mass end. A result exceeding 000 means the assigned single salt exceeds this fill model even at the low-mass end.

Form groups include names in extracted primary rows, resolved salts and full-record salt mentions, and can overlap; a capsule verdict requires a single assigned salt matching this group. These are counts of label declarations, with the capsule model allocating the fill to the compound. Inspect individual serving statements and assigned salts in the audit register and the linked form pages.

Literature coverage

Which measurements are attached to these salts?

As of the literature review dated 2026-09-11, the supplied study collection associates 3 publications with magnesium chloride and 2 with magnesium gluconate; the combined list contains 3 unique publications, with shared records printed once.

Study-set membership · reviewed 2026-09-11
Salt	Publications	Publication years
Magnesium chloride	3	1992–2005
Magnesium gluconate	2	1992–2005

Membership means that at least one selected salt appears in the study's recorded coverage; it does not mean every paper directly compares this exact pair. In particular, an amino-acid-chelate arm does not establish a chemically defined bisglycinate preparation. Each record below retains its actual design, population, read-out and limits.

Published measurements · peer-reviewed sources

3 published measurements relevant to this pair

The 2026-09-11 literature review links these 3 publications, ordered newest first; study outcomes remain attached to their own experimental conditions.

These entries report what each study measured and on whom. They are not advice, not a ranking, and not a claim about any product on this site. Every reference links to its PubMed record so the original can be read in full.

Study of magnesium bioavailability from ten organic and inorganic Mg salts in Mg-depleted rats using a stable isotope approach
Magnesium Research · 2005 · PMID 16548135
Design
Eighty male Wistar rats fed a magnesium-depleted diet for three weeks, then randomised into ten groups, each receiving a different magnesium salt labelled with a stable isotope.
What it measured
Stable isotopes allow absorption and retention to be traced directly rather than inferred from urine, across ten salts at once — the widest head-to-head comparison in the literature.
Limits
Rats, not people, and magnesium-depleted rats at that: depletion itself raises absorption. The breadth of the comparison is its value; the species is its limit.
Bioavailability of US commercial magnesium preparations
Magnesium Research · 2001 · PMID 11794633
Design
Four commercially available US preparations given to healthy volunteers; bioavailability measured as the increment in urinary magnesium excretion.
What it measured
The study set out to test the claim that organic magnesium salts are more easily absorbed than inorganic ones, using urinary excretion as the read-out.
Limits
Healthy volunteers, small sample, urinary excretion as a proxy for absorption rather than a direct measurement of retention.
Blood and urinary magnesium kinetics after oral magnesium supplements.
Clinical therapeutics · 1992 · PMID 1468087
Design
Randomized, crossover study in 12 healthy normomagnesemic subjects: a baseline period followed by three separate one-week supplementation trials at 16 mmol/dose — magnesium chloride solution, slow-release magnesium chloride tablets, and magnesium gluconate tablets — with a standardized diet during each trial.
What it measured
Urinary magnesium excretion in 0-4, 4-8, 8-12, and 12-24 hour collections; intraleukocyte, total serum, and ultrafiltrable serum magnesium at 0, 1, 2, 3, 4, 8, 12, and 24 hours; area-under-curve for each compartment relative to baseline for each supplement form.
Limits
Very small sample (n=12); only two chemical forms tested (chloride in two formulations, plus gluconate); short trial duration per arm (24 hours, with weekly crossover intervals); normomagnesemic (not magnesium-deficient) subjects only.

Magnesium chloride: trace the filed inputs

8 of 19 labels mentioning magnesium chloride are shown in brand order from the supplied NIH DSLD records, calculated 2026-09-13. Salt mentions can overlap; only records assigned this single salt enter its capsule audit above.

Filed labels in brand and product order · 8 labels · calculated 2026-09-13
Brand / label	Salt / physical state	Filed serving	Observed item price / EC100
Alta Health Products Magnesium ChlorideNIH DSLD 299274 · label 2023-11-22	Magnesium chlorideTablet or Pill	1–3 Tablet(s)Elemental amount unresolved as of 2026-09-13	No published price matched to barcode 0 76920 00060 4 as of 2026-09-13.
Complete H2O Minerals Magnesium ConcentrateNIH DSLD 180155 · label 2018-08-31	Magnesium chlorideLiquid	0.33–1 Tbsp (5-15mL)18 mg elemental magnesium per serving	No published price matched to barcode 1 88671 00042 7 as of 2026-09-13.
Complete H2O Minerals Magnesium ConcentrateNIH DSLD 252064 · label 2021-07-27	Magnesium chlorideLiquid	15 mL (1 Tbsp.)18 mg elemental magnesium per serving	No published price matched to barcode 1 88671 00014 4 as of 2026-09-13.
Complete H2O Minerals Ultimate Magnesium ConcentrateNIH DSLD 252079 · label 2021-07-27	Magnesium chlorideLiquid	1 mL (25 drops)120 mg elemental magnesium per serving	No published price matched to barcode 8 52670 00617 8 as of 2026-09-13.
Douglas Laboratories Magnesium Aspartate 2XNIH DSLD 30655 · label 2014-02-26	Single salt unresolved as of 2026-09-13Tablet or Pill	1 Tablet(s)200 mg elemental magnesium per serving	No published price matched to barcode 3 10539 01313 7 as of 2026-09-13.
Douglas Laboratories Magnesium/Potassium ComplexNIH DSLD 26827 · label 2013-10-25	Single salt unresolved as of 2026-09-13Capsule	1 Capsule(s)90 mg elemental magnesium per serving	No published price matched to barcode 3 10539 71400 3 as of 2026-09-13.
Douglas Laboratories Magnesix Magnesium And B-6NIH DSLD 26807 · label 2013-10-25	Magnesium oxideTablet or Pill	1 Tablet(s)50 mg elemental magnesium per serving	$11.50 per container; $0.2300 per 100 mgObserved 2026-09-07 · legacy-verified
Good State Ionic Magnesium 40,000 PPMNIH DSLD 229255 · label 2020-07-23	Magnesium chlorideLiquid	1.25–2.5 mL (1/4-1/2 cap)100 mg elemental magnesium per serving	No published price matched to barcode 8 57515 00312 1 as of 2026-09-13.

Open the salt index and linked records to inspect ingredient lists, the source of the assigned salt and dated gaps in price matching.

Magnesium gluconate: trace the filed inputs

8 of 20 labels mentioning magnesium gluconate are shown in brand order from the supplied NIH DSLD records, calculated 2026-09-13. Salt mentions can overlap; only records assigned this single salt enter its capsule audit above.

Filed labels in brand and product order · 8 labels · calculated 2026-09-13
Brand / label	Salt / physical state	Filed serving	Observed item price / EC100
Bairn Biologics Magnesium Plus Raspberry Lemonade FlavorNIH DSLD 230669 · label 2020-07-23	Magnesium carbonatePowder	5.7 Gram(s) (1 level scoop)300 mg elemental magnesium per serving	No published price matched to NIH DSLD 230669; barcode not filed as of 2026-09-13.
BulkSupplements.com Magnesium Gluconate 500 mgNIH DSLD 294869 · label 2023-08-23	Magnesium gluconateCapsule	3 Capsule(s)80 mg elemental magnesium per serving	No published price matched to barcode X000TO2K8X as of 2026-09-13.
BulkSupplements.com Magnesium Gluconate 500 mgNIH DSLD 294870 · label 2023-07-18	Magnesium gluconateCapsule	3 Capsule(s)80 mg elemental magnesium per serving	No published price matched to barcode X000TO2L19 as of 2026-09-13.
DC MagnesiumNIH DSLD 265884 · label 2022-04-11	Single salt unresolved as of 2026-09-13Tablet or Pill	1 Tablet(s)133 mg elemental magnesium per serving	No published price matched to NIH DSLD 265884; barcode not filed as of 2026-09-13.
Douglas Laboratories Magnesix Magnesium And B-6NIH DSLD 26807 · label 2013-10-25	Magnesium oxideTablet or Pill	1 Tablet(s)50 mg elemental magnesium per serving	$11.50 per container; $0.2300 per 100 mgObserved 2026-09-07 · legacy-verified
Family Wellness Calcium, Magnesium & ZincNIH DSLD 76776 · label 2017-07-25	Single salt unresolved as of 2026-09-13Tablet or Pill	1 Tablet(s)133 mg elemental magnesium per serving	No published price matched to barcode 0 32251 02718 5 as of 2026-09-13.
Finest Nutrition Calcium, Magnesium & ZincNIH DSLD 64451 · label 2016-09-22	Single salt unresolved as of 2026-09-13Tablet or Pill	1 Tablet(s)133 mg elemental magnesium per serving	No published price matched to barcode 3 11917 13950 0 as of 2026-09-13.
Freeda Magnesium GluconateNIH DSLD 246217 · label 2021-03-25	Magnesium gluconateTablet or Pill	4 Tablet(s)110 mg elemental magnesium per serving	No published price matched to barcode 7 58487 01751 5 as of 2026-09-13.

Open the salt index and linked records to inspect ingredient lists, the source of the assigned salt and dated gaps in price matching.

Retail observations · after chemistry and evidence

Price observations within each salt

As of 2026-09-13, the published price set contains 0 verified magnesium chloride matches and 0 verified magnesium gluconate matches. Each table below contains one salt and its own sample size; verified medians describe only that salt's verified rows.

EC100 = container price ÷ (declared elemental mg per serving × servings per container ÷ 100). It normalizes the container's elemental amount. The observations use one-time item prices, without coupons or subscriptions and excluding shipping. The tables retain the two salts' page order; sorting operates inside an individual salt table.

Magnesium chloride: its own retail sample

As of 2026-09-13, magnesium chloride has 0 verified matches and 0 pending matches in the price set. No verified median is available as of 2026-09-13. Observation dates: No published observations as of 2026-09-13.

0 verified retail matches are published for magnesium chloride as of 2026-09-13.

There are 0 pending price matches for magnesium chloride as of 2026-09-13.

Open the magnesium chloride label group →

Magnesium gluconate: its own retail sample

As of 2026-09-13, magnesium gluconate has 0 verified matches and 0 pending matches in the price set. No verified median is available as of 2026-09-13. Observation dates: No published observations as of 2026-09-13.

0 verified retail matches are published for magnesium gluconate as of 2026-09-13.

There are 0 pending price matches for magnesium gluconate as of 2026-09-13.

Open the magnesium gluconate label group →

To reproduce a container calculation, use the elemental cost calculator and its static mass tables. The magnesium collection abstract connects each salt group to the label corpus; the literature collection puts the cited measurements in their broader study context.