Label arithmetic · NIH DSLD 313573
NOW Magnesium Bisglycinate Powder: 250 mg of magnesium per 2.5 gram, 91 servings
250 mg of magnesium in each 2.5 gram, about 91 servings per 8 Ounce. Glycinate is 11.8–14.1% magnesium. Inside: salt per scoop, %DV check.
NOW Magnesium Bisglycinate Powder declares 250 mg of elemental magnesium per serving as glycinate, which means 1,773–2,113 mg of magnesium glycinate powder in one serving, compared with 1,100 mg in the largest standard capsule; that is the weight of the salt alone, before any fillers or flavours in the scoop. No US retail price matched as of 2026-11-02; 17 of the 73 glycinate labels in this registry have a matched price. NIH DSLD 313573, label dated 2024-10-24.
computed from the filed label
Chart data
| Displayed chart text |
|---|
| gluconate |
| 4,266 |
| orotate |
| 3,439 |
| L-threonate |
| 3,030 |
| taurate |
| 2,803 |
| lactate |
| 2,082 |
| glycerophosphate |
| 2,000 |
| glycinate |
| 1,773 |
| malate |
| 1,609 |
| aspartate |
| 1,598 |
| citrate |
| 1,547 |
| sulfate |
| 1,238 |
| chloride |
| 979 |
| carbonate |
| 867 |
| hydroxide |
| 600 |
| oxide |
| 414 |
Data release 2026-08-10-f441aa9f · registry snapshot 2026-08-10 · latest price observation 2026-10-19 · chemistry 2026-10-17
Mass: 1,773–2,113 mg per serving · Price: none matched · % DV: 60% vs 60%
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 glycinate powder is in one scoop?
NOW Magnesium Bisglycinate Powder carries 1,773–2,113 mg of magnesium glycinate per serving for 250 mg of elemental magnesium, against 1,100 mg in the largest standard capsule; capsule capacities do not apply to this powder.
computed with assumption| Measure | Value |
|---|---|
| Elemental magnesium per serving | 250 mg |
| Units per serving | Not a discrete unit as of 2026-11-02 |
| Magnesium glycinate per serving | 1,773–2,113 mg |
| Magnesium glycinate per serving | Not computable as of 2026-11-02 |
| 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 (bisglycinate; chelate hydration varies by supplier), so the compound mass is a range.
Source · NIH DSLD 313573 · label 2024-10-24; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How much elemental magnesium is actually in this label's filed magnesium lines?
NOW Magnesium Bisglycinate Powder files 1 magnesium line in NIH DSLD 313573; the selected primary line declares 250 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 |
|---|---|---|
| 250 mg | elemental, from | Primary serving |
Source · NIH DSLD 313573 · label 2024-10-24; 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; 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 glycinate | 11.8–14.1% | full NIH DSLD record text |
Source · NIH DSLD 313573 · label 2024-10-24; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Is this a good price for the elemental magnesium I'm actually getting?
No US retail price is matched to this label as of 2026-11-02; 17 of 73 glycinate labels have one, against a median of $0.1889 per 100 mg among 17 ranked glycinate offers.
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 |
| 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, NOW Magnesium Bisglycinate Powder lasts 46–91 days: 91 servings against 1–2 servings a day in the filed directions.
computed| Measure | Value |
|---|---|
| Net contents as filed | 8 Ounce(s); 227 Gram(s) |
| Serving size as filed | 2.5 Gram(s) (1 level teaspoon) |
| Servings per container | 91 |
| Servings per day in the directions | 1–2 |
| Days per bottle | 46–91 days |
| $ per 30 days at one label serving a day | No ranked price as of 2026-11-02 |
| $ per 30 days at 420 mg Daily Value | No ranked price as of 2026-11-02 |
Source · NIH DSLD 313573 · label 2024-10-24; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does "60% Daily Value" mean here, and does it recompute?
The label declares 60% Daily Value; 250 mg against the 420 mg reference in 21 CFR 101.9 recomputes to 60%, the same within one point.
computed| Group as filed | Declared | Reference | Recomputed |
|---|---|---|---|
| Adults and children 4 or more years of age | 60% | 420 mg | 60% |
Source · NIH DSLD 313573; 21 CFR 101.9 · label 2024-10-24 · release 2026-08-10-f441aa9f · CSV · method
Why does this label contain these other ingredients, what shell is it, and who is it filed for?
NOW Magnesium Bisglycinate Powder files 1 other ingredient, and no magnesium stearate, against 28 of 73 glycinate labels that list magnesium stearate.
measured| Entry | Filed ingredient or declaration |
|---|---|
| 1 | Citric Acid |
| Target group | Vegan |
| Target group | Vegetarian |
| Target group | Adult (18 - 50 Years) |
| Target group | Kosher |
| Target group | Gluten Free |
| Target group | Dairy Free |
Source · NIH DSLD 313573 · label 2024-10-24; 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?
NOW has 12 FDA recall records matched by brand name in the enforcement data queried 2026-10-19. NOW 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-1726-2013 | 2013-07-31 | It has been determined that this product contains an undeclared ingredient, licorice extract, which contains glycyrrhizin derived from licorice root. | Terminated |
| F-0770-2014 | 2013-12-25 | Firm is recalling dietary supplements containing a raw material which may contain >0.3 ppb chloramphenicol | Terminated |
| F-1537-2014 | 2014-02-26 | Digestive enzyme capsules manufactured by NOW Foods may contain the antibiotic chloramphenicol. | Terminated |
| F-1484-2017 | 2017-02-22 | Product's supplement fact panel incorrectly states that the product contains 75 mg (milligrams) of Molybdenum, when it actually contains 75 mcg (micrograms). | Terminated |
| F-0682-2019 | 2018-12-12 | NOW Health Group Inc. initiated a voluntary recall of NOW s Vitamin B-50 mg 100 Veg Caps product code 0420 because it is mislabeled as Vitamin B-50 mg 100 Veg Caps. | 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 313573 · label 2024-10-24; 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 313573 · label 2024-10-24; 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 313573 (label 2024-10-24, snapshot 2026-08-10) and the chemistry model of 2026-09-13. 1 gap remain: No US retail price matched as of 2026-11-02 (barcode 7 33739 01299 9). The CSV carries the values shown here.
measured| Field | As filed |
|---|---|
| NIH DSLD label | NIH DSLD 313573 |
| Scanned label (PDF) | Label 313573 scan |
| Label date | 2024-10-24 |
| Date entered into DSLD | 2024-10-24 |
| Barcode (UPC) as filed | 7 33739 01299 9 |
| Label version · Image difference, same product | NIH DSLD 14473 |
| Label version · Image difference, same product | NIH DSLD 210421 |
| Label version · Image difference, same product | NIH DSLD 37201 |
38 additional rows
| Field | As filed |
|---|---|
| Label version · Image difference, same product | NIH DSLD 38854 |
| Label version · Image difference, same product | NIH DSLD 51756 |
| Label version · Image difference, same product | NIH DSLD 70613 |
| Label version · Image difference, same product | NIH DSLD 314000 |
| Label version · Image difference, same product | NIH DSLD 244688 |
| Label version · Image difference, same product | NIH DSLD 27951 |
| Label version · Image difference, same product | NIH DSLD 49888 |
| Label version · Image difference, same product | NIH DSLD 70355 |
| Packaged by | NOW FOODS, Bloomingdale, IL, USA |
| Claim category as filed | Nutrient |
| Claim category as filed | All Other |
| Claim category as filed | Structure/Function |
| Suggested/Recommended/Usage/Directions | Suggested Usage: Mix 1 level teaspoon of powder into at least 6 oz. of juice or water. Take 1 to 2 times daily with food. This product must be diluted into a liquid before ingestion. |
| Formula re: Contains | Magnesium bisglycinate utilizes magnesium bound to the amino acid glycine, which facilitates intestinal absorption. Magnesium is a mineral that activates an estimated 300 enzymes, including those that regulate functions critical for energy production and metabolism, muscle contraction, nerve impulse transmission, and bone mineralization. In addition, magnesium is required for fatty acid synthesis, protein synthesis, and glucose metabolism. Magnesium status is also important for regulation of calcium balance through its effects on the parathyroid gland. |
| 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. |
| Precautions re: Children | Caution: For adults only. |
| Precautions re: Pregnant or Nursing or Prescription Medications | Consult physician if pregnant/nursing, taking medication, or have a medical condition. |
| Precautions re: Children | Keep out of reach of children. |
| Precautions re: All Other | Do not eat freshness packet enclosed. |
| Formulation re: Other | Natural color variation may occur in this product. |
| General Statements: All Other Content | This bottle is made from 100% PCR (post-consumer recycled) resin. |
| Brand IP Statement(s) re: (c), (TM), (SM) | Albion Minerals |
| Formulation re: Other | Nervous system support Supports energy production Critical for enzyme function |
| Seals/Symbols | Triangle K |
| Formula re: Kosher | Triangle K |
| FDA Statement of Identity | A Dietary Supplement |
| Formulation re: Vegetarian/Vegan | Vegetarian/vegan |
| Seals/Symbols | Non GMO Project Verified nongmoproject.org |
| Formulation re: Does NOT Contain | Non GMO Project Verified nongmoproject.org |
| General Statements: All Other Content | Minerals Family owned since 1968. |
| Formulation re: Other | Packaged and quality tested in the USA. |
| Formulation re: Does NOT Contain | Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients. |
| Precautions re: Allergies | Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens. |
| Brand IP Statement(s) re: (c), (TM), (SM) | Albion and the Albion Gold Medallion design are trademarks of Balchem Corporation or its subsidiaries. |
| Storage | Store in a cool, dry place after opening. |
| Seals/Symbols | GMP Quality Assured |
| Physical state | Powder |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 313573 · label 2024-10-24; 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.