ElementalDose

Equal elemental amount · snapshot 2026-08-10

Magnesium carbonate vs Magnesium chloride

For 200 mg elemental magnesium, magnesium carbonate requires 694–807 mg of compound and magnesium chloride requires 783–1,672 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 24.78–28.83% magnesium by mass for magnesium carbonate and 11.96–25.53% for magnesium chloride; dividing the elemental amount by these fractions gives the compound masses below.

Formula, magnesium fraction and compound mass · snapshot context 2026-08-10
PropertyMagnesium carbonateMagnesium chloride
Elemental Mg by compound mass24.78–28.83%11.96–25.53%
Anhydrous reference formulaMgCO₃MgCl₂
Molar mass of that reference formula84.31 g/mol95.21 g/mol
Composition intervalanhydrous or hydrated; labels rarely state whichanhydrous 25.5%, hexahydrate 12.0%
Compound for 100 mg elemental Mg347–404 mg392–836 mg
Compound for 200 mg elemental Mg694–807 mg783–1,672 mg
Compound for 400 mg elemental Mg1,387–1,614 mg1,567–3,344 mg
Size 00 capsules for 100 mg elemental Mg1 capsules at 730 mg compound fill each1–2 capsules at 730 mg compound fill each
Size 00 capsules for 200 mg elemental Mg1–2 capsules at 730 mg compound fill each2–3 capsules at 730 mg compound fill each
Size 00 capsules for 400 mg elemental Mg2–3 capsules at 730 mg compound fill each3–5 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 carbonate: 200 mg worked example

For 200 mg elemental magnesium as magnesium carbonate, the chemistry accompanying the 2026-08-10 snapshot requires 694–807 mg of compound: 200 ÷ 0.2883 through 200 ÷ 0.2478, rounded to whole milligrams.

That requires 1–2 size 00 capsules at 730 mg of compound per capsule, before other ingredients. The mass interval reflects anhydrous or hydrated; labels rarely state which.

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%.

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 carbonate and Magnesium chloride · 40 elemental inputs · 2026-09-13
Elemental MgMagnesium carbonate: compound massMagnesium carbonate: size 0Magnesium carbonate: size 00Magnesium carbonate: size 000Magnesium chloride: compound massMagnesium chloride: size 0Magnesium chloride: size 00Magnesium chloride: size 000
25 mg elemental Mg87–101 mg compound1 capsules at 545 mg fill1 capsules at 730 mg fill1 capsules at 1100 mg fill98–209 mg compound1 capsules at 545 mg fill1 capsules at 730 mg fill1 capsules at 1100 mg fill
50 mg elemental Mg173–202 mg compound1 capsules at 545 mg fill1 capsules at 730 mg fill1 capsules at 1100 mg fill196–418 mg compound1 capsules at 545 mg fill1 capsules at 730 mg fill1 capsules at 1100 mg fill
75 mg elemental Mg260–303 mg compound1 capsules at 545 mg fill1 capsules at 730 mg fill1 capsules at 1100 mg fill294–627 mg compound1–2 capsules at 545 mg fill1 capsules at 730 mg fill1 capsules at 1100 mg fill
100 mg elemental Mg347–404 mg compound1 capsules at 545 mg fill1 capsules at 730 mg fill1 capsules at 1100 mg fill392–836 mg compound1–2 capsules at 545 mg fill1–2 capsules at 730 mg fill1 capsules at 1100 mg fill
125 mg elemental Mg434–504 mg compound1 capsules at 545 mg fill1 capsules at 730 mg fill1 capsules at 1100 mg fill490–1,045 mg compound1–2 capsules at 545 mg fill1–2 capsules at 730 mg fill1 capsules at 1100 mg fill
150 mg elemental Mg520–605 mg compound1–2 capsules at 545 mg fill1 capsules at 730 mg fill1 capsules at 1100 mg fill588–1,254 mg compound2–3 capsules at 545 mg fill1–2 capsules at 730 mg fill1–2 capsules at 1100 mg fill
175 mg elemental Mg607–706 mg compound2 capsules at 545 mg fill1 capsules at 730 mg fill1 capsules at 1100 mg fill685–1,463 mg compound2–3 capsules at 545 mg fill1–3 capsules at 730 mg fill1–2 capsules at 1100 mg fill
200 mg elemental Mg694–807 mg compound2 capsules at 545 mg fill1–2 capsules at 730 mg fill1 capsules at 1100 mg fill783–1,672 mg compound2–4 capsules at 545 mg fill2–3 capsules at 730 mg fill1–2 capsules at 1100 mg fill
225 mg elemental Mg780–908 mg compound2 capsules at 545 mg fill2 capsules at 730 mg fill1 capsules at 1100 mg fill881–1,881 mg compound2–4 capsules at 545 mg fill2–3 capsules at 730 mg fill1–2 capsules at 1100 mg fill
250 mg elemental Mg867–1,009 mg compound2 capsules at 545 mg fill2 capsules at 730 mg fill1 capsules at 1100 mg fill979–2,090 mg compound2–4 capsules at 545 mg fill2–3 capsules at 730 mg fill1–2 capsules at 1100 mg fill
275 mg elemental Mg954–1,110 mg compound2–3 capsules at 545 mg fill2 capsules at 730 mg fill1–2 capsules at 1100 mg fill1,077–2,299 mg compound2–5 capsules at 545 mg fill2–4 capsules at 730 mg fill1–3 capsules at 1100 mg fill
300 mg elemental Mg1,041–1,211 mg compound2–3 capsules at 545 mg fill2 capsules at 730 mg fill1–2 capsules at 1100 mg fill1,175–2,508 mg compound3–5 capsules at 545 mg fill2–4 capsules at 730 mg fill2–3 capsules at 1100 mg fill
325 mg elemental Mg1,127–1,312 mg compound3 capsules at 545 mg fill2 capsules at 730 mg fill2 capsules at 1100 mg fill1,273–2,717 mg compound3–5 capsules at 545 mg fill2–4 capsules at 730 mg fill2–3 capsules at 1100 mg fill
350 mg elemental Mg1,214–1,412 mg compound3 capsules at 545 mg fill2 capsules at 730 mg fill2 capsules at 1100 mg fill1,371–2,926 mg compound3–6 capsules at 545 mg fill2–5 capsules at 730 mg fill2–3 capsules at 1100 mg fill
375 mg elemental Mg1,301–1,513 mg compound3 capsules at 545 mg fill2–3 capsules at 730 mg fill2 capsules at 1100 mg fill1,469–3,135 mg compound3–6 capsules at 545 mg fill3–5 capsules at 730 mg fill2–3 capsules at 1100 mg fill
400 mg elemental Mg1,387–1,614 mg compound3 capsules at 545 mg fill2–3 capsules at 730 mg fill2 capsules at 1100 mg fill1,567–3,344 mg compound3–7 capsules at 545 mg fill3–5 capsules at 730 mg fill2–4 capsules at 1100 mg fill
425 mg elemental Mg1,474–1,715 mg compound3–4 capsules at 545 mg fill3 capsules at 730 mg fill2 capsules at 1100 mg fill1,665–3,554 mg compound4–7 capsules at 545 mg fill3–5 capsules at 730 mg fill2–4 capsules at 1100 mg fill
450 mg elemental Mg1,561–1,816 mg compound3–4 capsules at 545 mg fill3 capsules at 730 mg fill2 capsules at 1100 mg fill1,763–3,763 mg compound4–7 capsules at 545 mg fill3–6 capsules at 730 mg fill2–4 capsules at 1100 mg fill
475 mg elemental Mg1,648–1,917 mg compound4 capsules at 545 mg fill3 capsules at 730 mg fill2 capsules at 1100 mg fill1,861–3,972 mg compound4–8 capsules at 545 mg fill3–6 capsules at 730 mg fill2–4 capsules at 1100 mg fill
500 mg elemental Mg1,734–2,018 mg compound4 capsules at 545 mg fill3 capsules at 730 mg fill2 capsules at 1100 mg fill1,958–4,181 mg compound4–8 capsules at 545 mg fill3–6 capsules at 730 mg fill2–4 capsules at 1100 mg fill
525 mg elemental Mg1,821–2,119 mg compound4 capsules at 545 mg fill3 capsules at 730 mg fill2 capsules at 1100 mg fill2,056–4,390 mg compound4–9 capsules at 545 mg fill3–7 capsules at 730 mg fill2–4 capsules at 1100 mg fill
550 mg elemental Mg1,908–2,220 mg compound4–5 capsules at 545 mg fill3–4 capsules at 730 mg fill2–3 capsules at 1100 mg fill2,154–4,599 mg compound4–9 capsules at 545 mg fill3–7 capsules at 730 mg fill2–5 capsules at 1100 mg fill
575 mg elemental Mg1,994–2,320 mg compound4–5 capsules at 545 mg fill3–4 capsules at 730 mg fill2–3 capsules at 1100 mg fill2,252–4,808 mg compound5–9 capsules at 545 mg fill4–7 capsules at 730 mg fill3–5 capsules at 1100 mg fill
600 mg elemental Mg2,081–2,421 mg compound4–5 capsules at 545 mg fill3–4 capsules at 730 mg fill2–3 capsules at 1100 mg fill2,350–5,017 mg compound5–10 capsules at 545 mg fill4–7 capsules at 730 mg fill3–5 capsules at 1100 mg fill
625 mg elemental Mg2,168–2,522 mg compound4–5 capsules at 545 mg fill3–4 capsules at 730 mg fill2–3 capsules at 1100 mg fill2,448–5,226 mg compound5–10 capsules at 545 mg fill4–8 capsules at 730 mg fill3–5 capsules at 1100 mg fill
650 mg elemental Mg2,255–2,623 mg compound5 capsules at 545 mg fill4 capsules at 730 mg fill3 capsules at 1100 mg fill2,546–5,435 mg compound5–10 capsules at 545 mg fill4–8 capsules at 730 mg fill3–5 capsules at 1100 mg fill
675 mg elemental Mg2,341–2,724 mg compound5 capsules at 545 mg fill4 capsules at 730 mg fill3 capsules at 1100 mg fill2,644–5,644 mg compound5–11 capsules at 545 mg fill4–8 capsules at 730 mg fill3–6 capsules at 1100 mg fill
700 mg elemental Mg2,428–2,825 mg compound5–6 capsules at 545 mg fill4 capsules at 730 mg fill3 capsules at 1100 mg fill2,742–5,853 mg compound6–11 capsules at 545 mg fill4–9 capsules at 730 mg fill3–6 capsules at 1100 mg fill
725 mg elemental Mg2,515–2,926 mg compound5–6 capsules at 545 mg fill4–5 capsules at 730 mg fill3 capsules at 1100 mg fill2,840–6,062 mg compound6–12 capsules at 545 mg fill4–9 capsules at 730 mg fill3–6 capsules at 1100 mg fill
750 mg elemental Mg2,601–3,027 mg compound5–6 capsules at 545 mg fill4–5 capsules at 730 mg fill3 capsules at 1100 mg fill2,938–6,271 mg compound6–12 capsules at 545 mg fill5–9 capsules at 730 mg fill3–6 capsules at 1100 mg fill
775 mg elemental Mg2,688–3,128 mg compound5–6 capsules at 545 mg fill4–5 capsules at 730 mg fill3 capsules at 1100 mg fill3,036–6,480 mg compound6–12 capsules at 545 mg fill5–9 capsules at 730 mg fill3–6 capsules at 1100 mg fill
800 mg elemental Mg2,775–3,228 mg compound6 capsules at 545 mg fill4–5 capsules at 730 mg fill3 capsules at 1100 mg fill3,134–6,689 mg compound6–13 capsules at 545 mg fill5–10 capsules at 730 mg fill3–7 capsules at 1100 mg fill
825 mg elemental Mg2,862–3,329 mg compound6–7 capsules at 545 mg fill4–5 capsules at 730 mg fill3–4 capsules at 1100 mg fill3,231–6,898 mg compound6–13 capsules at 545 mg fill5–10 capsules at 730 mg fill3–7 capsules at 1100 mg fill
850 mg elemental Mg2,948–3,430 mg compound6–7 capsules at 545 mg fill5 capsules at 730 mg fill3–4 capsules at 1100 mg fill3,329–7,107 mg compound7–14 capsules at 545 mg fill5–10 capsules at 730 mg fill4–7 capsules at 1100 mg fill
875 mg elemental Mg3,035–3,531 mg compound6–7 capsules at 545 mg fill5 capsules at 730 mg fill3–4 capsules at 1100 mg fill3,427–7,316 mg compound7–14 capsules at 545 mg fill5–11 capsules at 730 mg fill4–7 capsules at 1100 mg fill
900 mg elemental Mg3,122–3,632 mg compound6–7 capsules at 545 mg fill5 capsules at 730 mg fill3–4 capsules at 1100 mg fill3,525–7,525 mg compound7–14 capsules at 545 mg fill5–11 capsules at 730 mg fill4–7 capsules at 1100 mg fill
925 mg elemental Mg3,208–3,733 mg compound6–7 capsules at 545 mg fill5–6 capsules at 730 mg fill3–4 capsules at 1100 mg fill3,623–7,734 mg compound7–15 capsules at 545 mg fill5–11 capsules at 730 mg fill4–8 capsules at 1100 mg fill
950 mg elemental Mg3,295–3,834 mg compound7–8 capsules at 545 mg fill5–6 capsules at 730 mg fill3–4 capsules at 1100 mg fill3,721–7,943 mg compound7–15 capsules at 545 mg fill6–11 capsules at 730 mg fill4–8 capsules at 1100 mg fill
975 mg elemental Mg3,382–3,935 mg compound7–8 capsules at 545 mg fill5–6 capsules at 730 mg fill4 capsules at 1100 mg fill3,819–8,152 mg compound8–15 capsules at 545 mg fill6–12 capsules at 730 mg fill4–8 capsules at 1100 mg fill
1000 mg elemental Mg3,469–4,036 mg compound7–8 capsules at 545 mg fill5–6 capsules at 730 mg fill4 capsules at 1100 mg fill3,917–8,361 mg compound8–16 capsules at 545 mg fill6–12 capsules at 730 mg fill4–8 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 carbonate form group has 0 audited capsule labels and the magnesium chloride group has 0; 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 groupAll labelsAudited capsulesFits 0/00Needs 000Exceeds 000
Magnesium carbonate230000
Magnesium chloride190000

At 2026-08-10, magnesium carbonate 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 23 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 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.

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 2 publications with magnesium carbonate and 3 with magnesium chloride; the combined list contains 4 unique publications, with shared records printed once.

Study-set membership · reviewed 2026-09-11
SaltPublicationsPublication years
Magnesium carbonate22005–2022
Magnesium chloride31992–2005

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

4 published measurements relevant to this pair

The 2026-09-11 literature review links these 4 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.

  1. Effects of short-term magnesium supplementation on ionized, total magnesium and other relevant electrolytes levels.

    Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2022 · PMID 35041150

    Design
    Short-term, 10-day supplementation study in 61 healthy young female adults, comparing three magnesium supplement forms: magnesium oxide (powder/granulate), magnesium citrate, and magnesium carbonate (effervescent tablets).
    What it measured
    Ionized magnesium concentration and its percentage of total magnesium; serum total magnesium concentration; other serum electrolyte levels — each assessed at baseline and after the 10-day intervention.
    Limits
    Healthy young female adults only, no male or older/deficient populations studied; short 10-day intervention with no longer-term follow-up; three specific product formulations were tested, so results may not generalize to other products of the same salts; the abstract does not report the per-arm breakdown of the 61 participants.

  2. 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.

  3. 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.

  4. 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 carbonate: trace the filed inputs

8 of 23 labels mentioning magnesium carbonate 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 / labelSalt / physical stateFiled servingObserved item price / EC100
Bairn Biologics Magnesium Plus Raspberry Lemonade FlavorNIH DSLD 230669 · label 2020-07-23Magnesium carbonatePowder5.7 Gram(s) (1 level scoop)300 mg elemental magnesium per servingNo published price matched to NIH DSLD 230669; barcode not filed as of 2026-09-13.
BIOVEA Calcium-MagnesiumNIH DSLD 248974 · label 2021-05-22Magnesium oxideCapsule3 Vegetarian Capsule(s)500 mg elemental magnesium per serving$14.99 per container; $0.0361 per 100 mgObserved 2026-09-07 · legacy-verified
CVS Pharmacy Natural Calcium, Magnesium & Zinc USPNIH DSLD 12010 · label 2012-08-24Magnesium oxideUnknown1 Caplet(s)133 mg elemental magnesium per servingNo published price matched to barcode 0 50428 06542 6 as of 2026-09-13.
Douglas Laboratories Dyna-Cal Extra-Strength Natural Calcium/Magnesium ComplexNIH DSLD 9831 · label 2012-06-01Single salt unresolved as of 2026-09-13Tablet or Pill4 Tablet(s)420 mg elemental magnesium per servingNo published price matched to barcode 3 10539 01579 7 as of 2026-09-13.
Douglas Laboratories Dyna-Cal Extra-Strength Natural Calcium/Magnesium ComplexNIH DSLD 9832 · label 2012-06-01Single salt unresolved as of 2026-09-13Tablet or Pill4 Tablet(s)420 mg elemental magnesium per servingNo published price matched to barcode 3 10539 01239 0 as of 2026-09-13.
Family Wellness Calcium, Magnesium & ZincNIH DSLD 76776 · label 2017-07-25Single salt unresolved as of 2026-09-13Tablet or Pill1 Tablet(s)133 mg elemental magnesium per servingNo published price matched to barcode 0 32251 02718 5 as of 2026-09-13.
Finest Nutrition Calcium, Magnesium & ZincNIH DSLD 64451 · label 2016-09-22Single salt unresolved as of 2026-09-13Tablet or Pill1 Tablet(s)133 mg elemental magnesium per servingNo published price matched to barcode 3 11917 13950 0 as of 2026-09-13.
GNC Magnesium Powder LemonNIH DSLD 243047 · label 2021-01-22Single salt unresolved as of 2026-09-13Powder4 Gram(s) (1 Scoop)325 mg elemental magnesium per serving$22.99 per container; $0.0842 per 100 mgObserved 2026-09-07 · legacy-verified

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

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 / labelSalt / physical stateFiled servingObserved item price / EC100
Alta Health Products Magnesium ChlorideNIH DSLD 299274 · label 2023-11-22Magnesium chlorideTablet or Pill1–3 Tablet(s)Elemental amount unresolved as of 2026-09-13No published price matched to barcode 0 76920 00060 4 as of 2026-09-13.
Complete H2O Minerals Magnesium ConcentrateNIH DSLD 180155 · label 2018-08-31Magnesium chlorideLiquid0.33–1 Tbsp (5-15mL)18 mg elemental magnesium per servingNo published price matched to barcode 1 88671 00042 7 as of 2026-09-13.
Complete H2O Minerals Magnesium ConcentrateNIH DSLD 252064 · label 2021-07-27Magnesium chlorideLiquid15 mL (1 Tbsp.)18 mg elemental magnesium per servingNo published price matched to barcode 1 88671 00014 4 as of 2026-09-13.
Complete H2O Minerals Ultimate Magnesium ConcentrateNIH DSLD 252079 · label 2021-07-27Magnesium chlorideLiquid1 mL (25 drops)120 mg elemental magnesium per servingNo published price matched to barcode 8 52670 00617 8 as of 2026-09-13.
Douglas Laboratories Magnesium Aspartate 2XNIH DSLD 30655 · label 2014-02-26Single salt unresolved as of 2026-09-13Tablet or Pill1 Tablet(s)200 mg elemental magnesium per servingNo published price matched to barcode 3 10539 01313 7 as of 2026-09-13.
Douglas Laboratories Magnesium/Potassium ComplexNIH DSLD 26827 · label 2013-10-25Single salt unresolved as of 2026-09-13Capsule1 Capsule(s)90 mg elemental magnesium per servingNo published price matched to barcode 3 10539 71400 3 as of 2026-09-13.
Douglas Laboratories Magnesix Magnesium And B-6NIH DSLD 26807 · label 2013-10-25Magnesium oxideTablet or Pill1 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 2020-07-23Magnesium chlorideLiquid1.25–2.5 mL (1/4-1/2 cap)100 mg elemental magnesium per servingNo 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.

Retail observations · after chemistry and evidence

Price observations within each salt

As of 2026-09-13, the published price set contains 0 verified magnesium carbonate matches and 0 verified magnesium chloride 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 carbonate: its own retail sample

As of 2026-09-13, magnesium carbonate 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 carbonate as of 2026-09-13.

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

Open the magnesium carbonate label group →

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 →

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.