Label arithmetic · NIH DSLD 338165
Perfect Supplements Perfect Magnesium: 383 mg of magnesium per serving
383 mg of magnesium per serving. Citrate is 11.3–16.2% magnesium; no US price matched (Nov 2). Inside: salt per scoop, %DV check.
Perfect Supplements Perfect Magnesium declares 383 mg of elemental magnesium per serving as citrate, which means 2,370–3,389 mg of magnesium citrate 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 135 citrate labels in this registry have a matched price. NIH DSLD 338165, label dated 2025-09-25.
computed from the filed label
Chart data
| Displayed chart text |
|---|
| gluconate |
| 6,536 |
| orotate |
| 5,268 |
| L-threonate |
| 4,642 |
| taurate |
| 4,294 |
| lactate |
| 3,189 |
| glycerophosphate |
| 3,064 |
| glycinate |
| 2,716 |
| malate |
| 2,465 |
| aspartate |
| 2,449 |
| citrate |
| 2,370 |
| sulfate |
| 1,897 |
| chloride |
| 1,500 |
| carbonate |
| 1,328 |
| hydroxide |
| 919 |
| oxide |
| 635 |
Data release 2026-08-10-f441aa9f · registry snapshot 2026-08-10 · latest price observation 2026-10-19 · chemistry 2026-10-17
Mass: 2,370–3,389 mg per serving · Price: none matched · % DV: 91% vs 91%
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 powder is in one scoop?
Perfect Supplements Perfect Magnesium carries 2,370–3,389 mg of magnesium citrate per serving for 383 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 | 383 mg |
| Units per serving | Not a discrete unit as of 2026-11-02 |
| Magnesium citrate per serving | 2,370–3,389 mg |
| Magnesium citrate 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 (trimagnesium dicitrate 16.2%; dibasic and hydrated forms as low as 11.3%), so the compound mass is a range.
Source · NIH DSLD 338165 · label 2025-09-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
How much elemental magnesium is actually in this label's filed magnesium lines?
Perfect Supplements Perfect Magnesium files 2 magnesium lines in NIH DSLD 338165; the selected primary line declares 383 mg of elemental magnesium per serving, against 1 other row excluded from the primary amount. A salt named under another nutrient does not turn that nutrient's quantity into elemental magnesium.
computed with assumption| Filed amount | Salt or note as filed | Role |
|---|---|---|
| 383 mg | elemental | Primary serving |
| 2,250 mg | Salt not named in this row; magnesium citrate is taken from the label text | Excluded from the primary amount |
If 2,250 mg were the compound mass rather than the element, the elemental amount would be about 364 mg (16.2% of it), computed with a stated assumption.
Source · NIH DSLD 338165 · label 2025-09-25; 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 338165 · label 2025-09-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
Is this a good price for the elemental magnesium I'm actually getting?
No US retail price is matched to this label as of 2026-11-02; 17 of 135 citrate labels have one, against a median of $0.1159 per 100 mg among 12 ranked citrate offers.
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, Perfect Supplements Perfect Magnesium lasts 120 days: 120 servings against 1 serving a day in the filed directions.
computed| Measure | Value |
|---|---|
| Net contents as filed | 270 Gram(s) |
| Serving size as filed | 0.56–2.25 Gram(s) (1 scoop = 1/2 tsp (2.25 g)) |
| Servings per container | 120 |
| Servings per day in the directions | 1 |
| Days per bottle | 120 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 338165 · label 2025-09-25; snapshot 2026-08-10 · release 2026-08-10-f441aa9f · CSV · method
What does "91% Daily Value" mean here, and does it recompute?
The label declares 91% Daily Value; 383 mg against the 420 mg reference in 21 CFR 101.9 recomputes to 91%, the same within one point.
computed| Group as filed | Declared | Reference | Recomputed |
|---|---|---|---|
| Adults and children 4 or more years of age | 91% | 420 mg | 91% |
Source · NIH DSLD 338165; 21 CFR 101.9 · label 2025-09-25 · 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?
Other ingredients are not present in the filed record for Perfect Supplements Perfect Magnesium as of 2026-11-02.
measured| Entry | Filed ingredient or declaration |
|---|---|
| Target group | Vegan |
| Target group | Vegetarian |
| Target group | Adult (18 - 50 Years) |
| Target group | Gluten Free |
| Target group | Dairy Free |
Source · NIH DSLD 338165 · label 2025-09-25; 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?
Perfect Supplements has 0 FDA recall records matched by brand name in the enforcement data queried 2026-10-19. Perfect Supplements has no FDA CAERS adverse event report on record at brand level as of 2026-10-19 (143 of 273 brands in this registry have at least one CAERS report).
measured| Recall | Date | Reason | Status |
|---|---|---|---|
| No recall record as of 2026-10-19 |
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 338165 · label 2025-09-25; 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 338165 · label 2025-09-25; 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 338165 (label 2025-09-25, snapshot 2026-08-10) and the chemistry model of 2026-09-13. 2 gaps remain: No US retail price matched as of 2026-11-02 (barcode 7 52830 86528 0); Other ingredients are not present in the filed record as of 2026-11-02. The CSV carries the values shown here.
measured| Field | As filed |
|---|---|
| NIH DSLD label | NIH DSLD 338165 |
| Scanned label (PDF) | Label 338165 scan |
| Label date | 2025-09-25 |
| Date entered into DSLD | 2025-09-25 |
| Barcode (UPC) as filed | 7 52830 86528 0 |
| Manufactured in the USA for | Perfect Supplements, LLC, Florence, MA, USA |
| Claim category as filed | Nutrient |
| Claim category as filed | All Other |
21 additional rows
| Field | As filed |
|---|---|
| Claim category as filed | Structure/Function |
| Formula re: Contains | One Simple Ingredient: 100% Pure & Natural Magnesium Citrate |
| Formula re: Contains | Sustainable & Ethical: This organic mineral source offers superior bioavailability and NO synthetics! Perfect Health Benefits: Magnesium is critical for enzyme function and energy production. Perfect Magnesium is produced through an all natural fermentation process yielding high elemental magnesium content and exceptional solubility. In addition, the powder is practically odorless with a neutral flavor that can be added to any liquid. |
| Formulation re: Does NOT Contain | Sustainable & Ethical: This organic mineral source offers superior bioavailability and NO synthetics! |
| Precautions re: Allergies | This product is manufactured in a facility that processes milk, egg, soy, tree nuts, fish, and shellfish. |
| 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. |
| Formulation re: Does NOT Contain | Non-GMO Synthetic free Gluten free |
| Formulation re: Other | All natural High bioavailability Dissolves easily Virtually tasteless |
| Formula re: Contains | Magnesium citrate powder Organic form of Mg |
| Formulation re: Organic | Organic form of Mg |
| FDA Statement of Identity | Dietary Supplement |
| Suggested/Recommended/Usage/Directions | Suggested Use: This is a concentrated form of Magnesium. Some people have a low tolerance for Magnesium, please start by mixing serving (1/8 tsp) dally into 8 ounces of water or juice and increase gradually to your comfort levels. |
| Precautions re: All Other | Please Note: Comparable to other Magnesium salts, Magnesium Citrate shows a laxative effect at higher dosage levels. |
| Precautions re: Children | Warning: Keep out of reach of children. |
| Precautions re: Pregnant or Nursing or Prescription Medications | Consult your physician prior to using if you are pregnant or nursing. |
| Formulation re: Does NOT Contain | BPA free |
| Formulation re: Other | Batch tested |
| Seals/Symbols | Vegan |
| Formulation re: Vegetarian/Vegan | Vegan |
| Physical state | Powder |
| Registry snapshot | 2026-08-10 |
Source · NIH DSLD 338165 · label 2025-09-25; 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.