Label arithmetic · NIH DSLD 316067
Dr. Berg Magnesium Glycinate: 80 mg of magnesium per capsule, 5 capsules a day, $29.99 a month
80 mg of magnesium per capsule; the label's 5 capsules a day cost $29.99 a month (Amazon, Nov 2). Inside: salt weight, capsule size, price rank.
Dr. Berg Magnesium Glycinate declares 400 mg of elemental magnesium per serving as glycinate, which needs 567–676 mg of magnesium glycinate in each capsule, against 730 mg in a size 00 capsule at powder density 0.8 g/mL, the top of the usual 0.6–0.8 range: it needs size 00 or larger. Observed at $0.2499 per 100 mg, rank 14 of 17 ranked glycinate offers (1 = lowest price per 100 mg), percentile 82 (lower = lower price). NIH DSLD 316067, label dated 2024-09-25.
computed from the filed label
Chart data
| Displayed chart text |
|---|
| 545 mg |
| 730 mg |
| 1,100 mg |
| 567–676 mg of glycinate per capsule |
Data release 2026-08-10-f441aa9f · registry snapshot 2026-08-10 · latest price observation 2026-11-02 · chemistry 2026-10-17
Mass: 567–676 mg per capsule · Price: $0.2499 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.
Will 400 mg of glycinate actually fit in one capsule, or do I need more than one?
Estimated salt mass versus assumed capsule capacity: Dr. Berg Magnesium Glycinate implies 567–676 mg of magnesium glycinate in each capsule to deliver 400 mg of elemental magnesium, against 1,100 mg in the largest standard capsule (size 000) at powder density 0.8 g/mL, the top of the usual 0.6–0.8 range. Verdict: needs size 00, read at the most favourable hydration and the most units per serving.
computed with assumption| Measure | Value |
|---|---|
| Elemental magnesium per serving | 400 mg |
| Units per serving | 5 |
| Magnesium glycinate per serving | 2,837–3,381 mg |
| Magnesium glycinate per capsule | 567–676 mg |
| Capsule capacity 0 · 00 · 000 | 545 · 730 · 1,100 mg |
| Verdict | Needs size 00 |
The filed salt can have more than one hydration state (bisglycinate; chelate hydration varies by supplier), so the compound mass is a range.
Source · NIH DSLD 316067 · label 2024-09-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How much elemental magnesium is actually in this label's filed magnesium lines?
Dr. Berg Magnesium Glycinate files 1 magnesium line in NIH DSLD 316067; 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 glycinate is taken from the label text | Primary serving |
Source · NIH DSLD 316067 · label 2024-09-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Does this label's glycinate claim hold up, or could the magnesium come from another source?
The label names one magnesium form, glycinate, resolved from the full NIH DSLD record text; at that salt the declaration is within the assumed size 000 capacity at powder density 0.8 g/mL, compared with oxide, the salt richest in magnesium at 60.3%.
computed with assumption| Form named on the label | Elemental fraction | Source |
|---|---|---|
| Magnesium glycinate | 11.8–14.1% | full NIH DSLD record text |
Source · NIH DSLD 316067 · label 2024-09-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Is this a good price for the elemental magnesium I'm actually getting?
Dr. Berg Magnesium Glycinate costs $0.2499 per 100 mg of elemental magnesium at the price observed 2026-11-02, rank 14 of 17 ranked glycinate offers (1 = lowest price per 100 mg), percentile 82 (lower = lower price), against a same-salt median of $0.1889; prices observed 2026-10-26 to 2026-11-02. First observed 2026-10-26 at $29.99, latest 2026-11-02 at $29.99, 2 observations.
computed
Chart data
| Displayed chart text |
|---|
| n=17 |
| P25 $0.1338 |
| P75 $0.2216 |
| median $0.1889 |
| Rank | Label | Per 100 mg | Observed |
|---|---|---|---|
| 1 | Amazon Elements Chelated Magnesium 270 mg | $0.0666 | 2026-11-02 |
| 2 | Solgar Chelated Magnesium | $0.0930 | 2026-11-02 |
| 3 | tnvitamins Magnesium Glycinate 300 mg | $0.0962 | 2026-11-02 |
| 4 | New Chapter Magnesium + Ashwagandha | $0.1229 | 2026-11-02 |
| 5 | Windmill Magnesium Glycinate 200 mg | $0.1338 | 2026-11-02 |
| 14 | Dr. Berg Magnesium Glycinate (this label) | $0.2499 | 2026-11-02 |
| Median | 17 ranked glycinate offers | $0.1889 | 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, Dr. Berg Magnesium Glycinate lasts 30 days: 30 servings against 1 serving a day in the filed directions. $29.99 a month at the label's suggested use (5 capsules a day) and $31.49 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 | 150 Capsule(s) |
| Serving size as filed | 5 Capsule(s) |
| Servings per container | 30 |
| Servings per day in the directions | 1 |
| Days per bottle | 30 days |
| Cost a month at the label suggested use | $29.99 a month at the label's suggested use (5 capsules a day) |
| $ per 30 days at 420 mg Daily Value | $31.49 |
Source · NIH DSLD 316067 · label 2024-09-25; 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 316067; 21 CFR 101.9 · label 2024-09-25 · release 2026-08-10-f441aa9f · CSV · method
Why does this label contain magnesium stearate, what shell is it, and who is it filed for?
Dr. Berg Magnesium Glycinate files 3 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 28 of 73 glycinate labels that list magnesium stearate.
measured| Entry | Filed ingredient or declaration |
|---|---|
| 1 | Capsule |
| 2 | Microcrystalline Cellulose |
| 3 | Magnesium Stearate |
| Shell | vegetarian |
| Target group | Adult (18 - 50 Years) |
Source · NIH DSLD 316067 · label 2024-09-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What has research measured about glycinate, and about side effects?
6 studies in the PubMed-checked registry measured outcomes involving glycinate; 2 mention gastrointestinal or adverse outcomes. They measured the salt, not this label.
measured| Year | Study | PubMed |
|---|---|---|
| 2024 | Comparative Clinical Study on Magnesium Absorption and Side Effects After Oral Intake of Microencapsulated Magnesium (MAGSHAPE™ Microcapsules) Versus Other Magnesium Sources. | 39770988 |
| 2024 | The bioaccessibility and tolerability of marine-derived sources of magnesium and calcium. | 38608850 |
| 2020 | Dose-Dependent Absorption Profile of Different Magnesium Compounds | 30761462 |
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?
Dr. Berg has 1 FDA recall record matched by brand name in the enforcement data queried 2026-10-19. Dr. Berg 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-0092-2022 | 2021-11-10 | Product recalled because of the presence of mold and/or yeast found in amounts that exceed the product's established specifications . | 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 316067 · label 2024-09-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Which labels are closest to this one, with the same salt and dose?
No other label files the same resolved salt within ±10% of this label's dose per unit as of 2026-11-02.
computed| Label | Elemental per unit | Price | Verdict |
|---|---|---|---|
| No neighbour as of 2026-11-02 |
Source · NIH DSLD 316067 · label 2024-09-25; 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 316067 (label 2024-09-25, 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 316067 |
| Scanned label (PDF) | Label 316067 scan |
| Label date | 2024-09-25 |
| Date entered into DSLD | 2024-09-25 |
| Barcode (UPC) as filed | 6 58580 35501 2 |
| Label version · Package size difference, same product | NIH DSLD 337164 |
| Label version · Image difference, same product | NIH DSLD 337165 |
| Label version · Package size difference, same product | NIH DSLD 337165 |
16 additional rows
| Field | As filed |
|---|---|
| Developed and Distributed by Dr. Eric Berg DC | Dr. Berg Nutritionals, Alexandria, VA |
| Claim category as filed | Nutrient |
| Claim category as filed | All Other |
| Claim category as filed | Structure/Function |
| Suggested/Recommended/Usage/Directions | Suggested use: As a dietary supplement, take 5 capsules per day. |
| Precautions re: All Other | Caution: Do not exceed recommended dose. Do not use if safety seal is damaged or missing. |
| Precautions re: Pregnant or Nursing or Prescription Medications | Pregnant or nursing mothers, children under the age of 18, and individuals with known medical conditions should consult a physician before using this or any dietary supplement. |
| Precautions re: Children | Pregnant or nursing mothers, children under the age of 18, and individuals with known medical conditions should consult a physician before using this or any dietary supplement. |
| FDA Disclaimer Statement | These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. |
| Storage | Store in a cool, dry place, with a lid. |
| General Statements: All Other Content | To reorder: shop.drberg.com (800) 816-8184 |
| Formula re: Contains | Highly absorbable magnesium with added Vitamins B6 and D3 |
| FDA Statement of Identity | Dietary Supplement |
| Brand IP Statement(s) re: (c), (TM), (SM) | Dr. Berg The knowledge doc |
| Physical state | Capsule |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 316067 · label 2024-09-25; 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.