Label arithmetic · NIH DSLD 269854
Best Naturals Magnesium Citrate 200 mg: 200 mg of magnesium per tablet, 2 tablets a day, $4.13 a month
200 mg of magnesium per tablet; the label's 2 tablets a day cost $4.13 a month (Amazon, Nov 2). Inside: salt weight, %DV check, price rank.
Best Naturals Magnesium Citrate 200 mg was observed at $17.21 on 2026-11-02 for 125 servings of 400 mg elemental magnesium as citrate: $0.0344 per 100 mg, rank 1 of 12 ranked citrate offers (1 = lowest price per 100 mg), percentile 8 (lower = lower price) (median $0.1159, ranked prices observed 2026-10-26 to 2026-11-02). NIH DSLD 269854, label dated 2022-06-16.
computed from the filed label
Chart data
| Displayed chart text |
|---|
| gluconate |
| 6,826 |
| orotate |
| 5,502 |
| L-threonate |
| 4,848 |
| taurate |
| 4,484 |
| lactate |
| 3,331 |
| glycerophosphate |
| 3,200 |
| glycinate |
| 2,837 |
| malate |
| 2,574 |
| aspartate |
| 2,558 |
| citrate |
| 2,475 |
| sulfate |
| 1,981 |
| chloride |
| 1,567 |
| carbonate |
| 1,387 |
| hydroxide |
| 960 |
| oxide |
| 663 |
Data release 2026-08-10-f441aa9f · registry snapshot 2026-08-10 · latest price observation 2026-11-02 · chemistry 2026-10-17
Mass: 1,238–1,770 mg per tablet · Price: $0.0344 per 100 mg · % DV: 95% vs 95%
Elemental: The magnesium itself; the rest of the compound weight is the partner molecule.
Compound: The whole salt, such as magnesium glycinate, that must physically fit in the capsule.
Size 000: The largest standard capsule, about 1,100 mg of powder at 0.8 g/mL, the top of the usual 0.6–0.8 range; size 00 holds about 730 mg and size 0 about 545 mg.
Recompute with your price
Enter the price you paid; the declared amount and servings of this label are prefilled, so the result is the cost per 100 mg of elemental magnesium for your bottle.
Same-salt comparison appears here.
How much citrate is pressed into one tablet?
Best Naturals Magnesium Citrate 200 mg carries 2,475–3,540 mg of magnesium citrate per serving for 400 mg of elemental magnesium, against 1,100 mg in the largest standard capsule; capsule capacities do not apply to this tablet or pill.
computed with assumption| Measure | Value |
|---|---|
| Elemental magnesium per serving | 400 mg |
| Units per serving | 2 |
| Magnesium citrate per serving | 2,475–3,540 mg |
| Magnesium citrate per tablet | 1,238–1,770 mg |
| Capsule capacity 0 · 00 · 000 | 545 · 730 · 1,100 mg |
| Verdict | Capsule sizes do not apply |
The filed salt can have more than one hydration state (trimagnesium dicitrate 16.2%; dibasic and hydrated forms as low as 11.3%), so the compound mass is a range.
Source · NIH DSLD 269854 · label 2022-06-16; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How much elemental magnesium is actually in this label's filed magnesium lines?
Best Naturals Magnesium Citrate 200 mg files 1 magnesium line in NIH DSLD 269854; the selected primary line declares 400 mg of elemental magnesium per serving, against 0 other rows excluded from the primary amount. A salt named under another nutrient does not turn that nutrient's quantity into elemental magnesium.
measured| Filed amount | Salt or note as filed | Role |
|---|---|---|
| 400 mg | Salt not named in this row; magnesium citrate is taken from the label text | Primary serving |
Source · NIH DSLD 269854 · label 2022-06-16; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Does this label's citrate claim hold up, or could the magnesium come from another source?
The label names one magnesium form, citrate, resolved from the full NIH DSLD record text; capsule capacities do not apply to this form, compared with oxide, the salt richest in magnesium at 60.3%.
computed with assumption| Form named on the label | Elemental fraction | Source |
|---|---|---|
| Magnesium citrate | 11.3–16.2% | full NIH DSLD record text |
Source · NIH DSLD 269854 · label 2022-06-16; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Is this a good price for the elemental magnesium I'm actually getting?
Best Naturals Magnesium Citrate 200 mg costs $0.0344 per 100 mg of elemental magnesium at the price observed 2026-11-02, rank 1 of 12 ranked citrate offers (1 = lowest price per 100 mg), percentile 8 (lower = lower price), against a same-salt median of $0.1159; prices observed 2026-10-26 to 2026-11-02. First observed 2026-10-26 at $17.21, latest 2026-11-02 at $17.21, 2 observations.
computed
Chart data
| Displayed chart text |
|---|
| n=12 |
| P25 $0.0843 |
| P75 $0.1469 |
| median $0.1159 |
| Rank | Label | Per 100 mg | Observed |
|---|---|---|---|
| 1 | Best Naturals Magnesium Citrate 200 mg | $0.0344 | 2026-11-02 |
| 2 | Solgar Magnesium Citrate | $0.0607 | 2026-11-02 |
| 3 | LES Labs Magnesium Citrate | $0.0777 | 2026-11-02 |
| 4 | Bluebonnet Magnesium Citrate | $0.0865 | 2026-11-02 |
| 5 | Solaray Magnesium Citrate 400 mg | $0.0868 | 2026-11-02 |
| Median | 12 ranked citrate offers | $0.1159 | 2026-11-02 |
Source · Amazon via licensed data provider; NIH DSLD · unique ASIN × date; prices observed 2026-10-26 to 2026-11-02 · release 2026-08-10-f441aa9f · CSV · method
How many days will this bottle last at the label's own serving, and what does a day cost?
At the label's own serving, Best Naturals Magnesium Citrate 200 mg lasts 125 days: 125 servings against 1 serving a day in the filed directions. $4.13 a month at the label's suggested use (2 tablets a day) and $4.33 at the 420 mg Daily Value reference (21 CFR 101.9); arithmetic on the label, not intake advice.
computed| Measure | Value |
|---|---|
| Net contents as filed | 250 Tablet(s) |
| Serving size as filed | 2 Tablet(s) |
| Servings per container | 125 |
| Servings per day in the directions | 1 |
| Days per bottle | 125 days |
| Cost a month at the label suggested use | $4.13 a month at the label's suggested use (2 tablets a day) |
| $ per 30 days at 420 mg Daily Value | $4.33 |
Source · NIH DSLD 269854 · label 2022-06-16; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does "95% Daily Value" mean here, and does it recompute?
The label declares 95% Daily Value; 400 mg against the 420 mg reference in 21 CFR 101.9 recomputes to 95%, the same within one point.
computed| Group as filed | Declared | Reference | Recomputed |
|---|---|---|---|
| Adults and children 4 or more years of age | 95% | 420 mg | 95% |
Source · NIH DSLD 269854; 21 CFR 101.9 · label 2022-06-16 · release 2026-08-10-f441aa9f · CSV · method
Why does this label contain magnesium stearate, what shell is it, and who is it filed for?
Best Naturals Magnesium Citrate 200 mg files 6 other ingredients, including magnesium stearate (reference fraction 4.1% magnesium; no quantity filed, so it is not added to the total) and a vegetarian shell, against 43 of 135 citrate labels that list magnesium stearate.
measured| Entry | Filed ingredient or declaration |
|---|---|
| 1 | Microcrystalline Cellulose |
| 2 | Croscarmellose Sodium |
| 3 | Stearic Acid |
| 4 | Magnesium Stearate |
| 5 | Silicon Dioxide |
| 6 | Pharmaceutical Glaze |
| Shell | vegetarian |
| Target group | Adult (18 - 50 Years) |
2 additional rows
| Entry | Filed ingredient or declaration |
|---|---|
| Target group | Gluten Free |
| Target group | Sugar Free |
Source · NIH DSLD 269854 · label 2022-06-16; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What has research measured about citrate, and about side effects?
10 studies in the PubMed-checked registry measured outcomes involving citrate; 1 mention gastrointestinal or adverse outcomes. They measured the salt, not this label.
measured| Year | Study | PubMed |
|---|---|---|
| 2025 | Comparing the Bioavailability of Two Seawater-Derived Magnesium Preparations. | 40955524 |
| 2024 | Comparative Clinical Study on Magnesium Absorption and Side Effects After Oral Intake of Microencapsulated Magnesium (MAGSHAPE™ Microcapsules) Versus Other Magnesium Sources. | 39770988 |
| 2022 | Effects of short-term magnesium supplementation on ionized, total magnesium and other relevant electrolytes levels. | 35041150 |
Source · PubMed-checked study registry · registry checked 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Has this brand had FDA recalls or adverse event reports?
Best Naturals has 1 FDA recall record matched by brand name in the enforcement data queried 2026-10-19. Best Naturals has FDA CAERS adverse event reports on record at brand level, as do 143 of 273 brands in this registry; openFDA states that “there is no certainty that the reported event (adverse event) was actually due to the product” and that reports “cannot be used to estimate the incidence of these events.”
measured| Recall | Date | Reason | Status |
|---|---|---|---|
| F-0080-2023 | 2022-10-26 | Best Nutritionals LLC 120 Centennial Ave, Piscataway NJ 08854, is initiating a recall of Fenugreek 610 mg , 360 Capsules ,in White Plastic HDPE bottles because the product has the potential to be contaminated with Salmonella. | Terminated |
Source · openFDA enforcement and CAERS · queried 2026-10-19 · release 2026-08-10-f441aa9f · CSV · method
Is this the same formula as another brand's, and how do their prices differ?
No other brand files the same formulation (ingredients, shell, units and rounded amount) as of 2026-11-02.
computed| Label | Brand | Price per 100 mg |
|---|---|---|
| No cross-brand match as of 2026-11-02 |
Source · NIH DSLD 269854 · label 2022-06-16; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Which labels are closest to this one, with the same salt and dose?
6 labels use the same resolved citrate within ±10% of this label's 200 mg per unit, compared side by side on price and capsule verdict.
computed| Label | Elemental per unit | Price | Verdict |
|---|---|---|---|
| Vitabase Magnesium Citrate 200 mg | 200 mg | No price | Capsule sizes do not apply |
| The Vitamin Shoppe Magnesium Citrate 200 mg (DSLD 55722) | 200 mg | No price | Capsule sizes do not apply |
| Vitamin World Magnesium Citrate 200 mg | 200 mg | No price | Capsule sizes do not apply |
| Protocol For Life Balance Magnesium Citrate | 200 mg | No price | Capsule sizes do not apply |
| The Vitamin Shoppe Magnesium Citrate 200 mg (DSLD 204430) | 200 mg | No price | Capsule sizes do not apply |
| The Vitamin Shoppe Magnesium Citrate 200 mg (DSLD 204431) | 200 mg | No price | Capsule sizes do not apply |
Source · NIH DSLD 269854 · label 2022-06-16; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Where does this record come from, what is missing, and how do I cite or correct it?
Every value on this page traces to NIH DSLD 269854 (label 2022-06-16, snapshot 2026-08-10), a price observed 2026-11-02 and the chemistry model of 2026-09-13. No data gap remains for the computed fields. The CSV carries the values shown here.
measured| Field | As filed |
|---|---|
| NIH DSLD label | NIH DSLD 269854 |
| Scanned label (PDF) | Label 269854 scan |
| Label date | 2022-06-16 |
| Date entered into DSLD | 2022-06-16 |
| Barcode (UPC) as filed | 8 17716 01236 0 |
| Manufactured for | Best Naturals, Kenilworth, NJ, USA |
| Claim category as filed | All Other |
| Claim category as filed | Structure/Function |
19 additional rows
| Field | As filed |
|---|---|
| Formula re: Contains | Magnesium is a mineral that is critical for energy production and metabolism, muscle contraction, nerve impulse transmission, and bone mineralization. It is a required cofactor for an estimated 300 enzymes. Among the reactions catalyzed by these enzymes are fatty acid synthesis, protein synthesis, and glucose metabolism. Magnesium status is also important to regulate the balance of calcium, sodium and potassium in our cells, particularly in our heart and blood vessels. Certain research publications indicate that Magnesium Citrate may help support the following: |
| Formulation re: Other | Supports Nerve and muscle function Supports healthy bone Supports cardiovascular health |
| Suggested/Recommended/Usage/Directions | Suggested Use: As a dietary supplement, take two (2) tablets daily, preferably with meals. |
| Precautions re: Children | Keep out of the reach of children. |
| Precautions re: All Other | Do not use if safety seal is broken or missing. |
| Storage | Keep in cool, dry place. |
| FDA Disclaimer Statement | These statements have not been evaluated by the FDA. This product is not intended to cure, prevent, treat or diagnose any disease. |
| Seals/Symbols | Made in USA |
| Formulation re: Other | Premium formula |
| Seals/Symbols | GMP Good Manufacturing Practice Product |
| Formulation re: Other | 3rd party lab tested |
| FDA Statement of Identity | Dietary Supplement |
| Precautions re: Pregnant or Nursing or Prescription Medications | Caution: For adults only, if you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use. |
| Precautions re: All Other | Discontinue use and consult your doctor if any adverse reactions occur. |
| Formula re: Contains | Magnesium Citrate is more easily digested and better absorbed than other forms of magnesium. |
| Formulation re: Does NOT Contain | No artificial color, flavor or sweetener, no preservatives, no sugar, no starch, no corn, no soy, no egg, no lactose, no gluten, no wheat, no yeast, no fish. |
| General Statements: All Other Content | For additional information call 1-877-659-6004 |
| Physical state | Tablet or Pill |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 269854 · label 2022-06-16; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
6 brand pages linked below contain magnesium labels from the NIH DSLD registry snapshot dated 2026-08-10.