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Magtein Magnesium L-Threonate Capsules

Mineral · Capsule · 30 servings

Label snapshot

What the label says

What the product contains and what one serving costs, according to our catalog. Label amounts are not personal dose recommendations.

Mineral per serving
Magnesium 2,001 mg Elemental vs compound: check label
Form
Capsule
List price (catalog, USD)
$39.99
Price per serving
$1.33List price divided by servings per container. A per-day cost only if the label serving is once daily.

Reading notes

  • Catalog notes mention undisclosed or blended amounts; the figures shown are only what the label states.
  • Whether the figure is elemental mineral or compound weight is not stored. Read the label.
Full label record: servings, testing, ingredients
Servings per container
30
Catalog monthly estimate
$39.99
Testing disclosure
Brand lists third-party testing and a public certificate of analysis (CoA)Status as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.

Ingredients as listed

IngredientAmount per serving
Magnesium2,001 mg

What to check on the label

  • Whether the label says 'elemental magnesium' or gives the compound weight (for example '2,000 mg magnesium L-threonate').
  • The salt form named. Different salts contain very different shares of elemental mineral.
  • Capsules per serving. Several products use two or three.

Amounts are per label serving as recorded in the catalog and are not a recommendation. Testing status reflects what the brand lists. Nothing here is medical advice.

Editorial score and research-dose calculations

These calculations describe our scoring method. They are not a recommended dose or proof of benefit from this product.

5.4/10
Overall score
#5 / 5 in Mineral

Public lab certificate, tested by independent lab, top 1% value.

Read the evidence (3 studies)
Tier 3
Ingredient RCT (matching dose)
The ingredient was tested in an RCT at the same dose this product sells.
See the 3 supporting studies
How we scored this product Show the full breakdown
Composite How this 5.4 is built. 0.50 × 6.4 + 0.20 × 9.0 + 0.10 × 9.9 + 0.10 × 5.0 + 0.05 × 8.5 + 0.05 × 9.4 = 5.4 out of 10. Safety caps applied after. 5.4
5.4 composite
Dose vs. studies50%6.4
Transparency20%9.0
Value10%9.9
Formulation10%5.0
Safety5%8.5
Community5%9.4

Evidence gates dose: the evidence grade sets the ceiling, and the dose decides how much of that ceiling the product reaches. Value = inverse of price-per-trial-dose-day. Community = mean sentiment of external reviews. Safety caps applied after weighting.

This score is our editorial judgment, not a scientific standard. We combine published evidence, dose, price, transparency, and consumer signals into one composite: this is our method, not a peer-reviewed clinical rating. A higher score means a product does better on the factors we weight, not that it is medically proven to work.

Read the full method →

Editorial verdict

Quick verdict

5.4 / 10
Best for
Full trial dose, Public lab certificate
Avoid if
No major red flags
Full-dose status
Meets trial dose
Price/month
$40
COA status
Public
Biggest caveat
Magnesium (2001.0mg is 667% of the 300mg trial dose) is well above the trial dose. More is not always better.
Nearest alternatives
Catalog snapshot. Check linked sources for current price, label and batch-specific testing.
Price verification
Current price: $39.99
Last price check: Sep 01, 2026
Layer 2 · Context
In plain language

Why this scored this way

This Nootropics Depot Magtein Magnesium L-Threonate Capsules scores 7.4, making it a mid-tier product with both strengths and weaknesses. It delivers 2001mg of Magnesium, above the studied range of 200–500mg with grade A evidence (strong human trial data). Transparency is a clear strength (score: 9.0), with third-party testing and a public lab certificate. At $0.20/day it's priced well for what you get.

What drives the score up

  • Dose-evidence score of 6.4 shows decent alignment with trial doses.
  • Quality transparency of 9.0: tested by independent lab with a public lab certificate.
  • Value score of 9.9 at $0.20/day.
  • Community score of 9.4 with positive consumer feedback.
  • Magnesium is dosed at the full research level with grade A evidence (strong human trial data).

What drags it down

  • Magnesium (2001.0mg is 667% of the 300mg trial dose) is well above the trial dose. More is not always better.

Why you'd choose it

  • You want good value at $0.20/day.
  • You want Magnesium from a Nootropics Depot product.
  • You prioritise tested by independent lab products with public lab certificates.

Why you might skip it

  • You want a standard dose of magnesium (this product is well above it).
Question 1

Does the molecule work?

The science behind each active ingredient, independent of which brand sells it.

Magnesium

One of the most common deficiencies; corrects sleep, muscle cramps, and blood pressure.

5 landmark RCTs · US: Dietary supplement · EU: Food supplement, health claims authorised
Question 2

Is this bottle good?

The specific product: dose, price, transparency, and what buyers report.

Dose vs research
1001% of trial dose
Meets or exceeds the published effective dose
Cost at trial dose
$0.20/day at trial dose
What one effective daily dose actually costs
Transparency
9.0/10 · Public lab certificate (quality: not assessed)
Independent batch testing confirmed
Consumer signals
2,404 reviews across platforms · 4.7/5 · high confidence
Operational signal only, never used as clinical evidence
Question 3

What's the catch?

Safety flags, transparency gaps, dosing concerns, and recurring buyer complaints.

Safety signals
Exceeds upper intake limit — magnesium
2001.0 mg per serving exceeds the tolerable upper intake level of 350.0 mg/day. UL of 350 mg/day applies to supplemental (non-food) magnesium for adults; high supplemental intake causes diarrhea, nausea, and abdominal cramping, and extreme intake can cause irregular heartbeat or cardiac arrest.
Read more
Drug interaction risk — magnesium
Can reduce absorption/efficacy of oral bisphosphonates, tetracyclines, and quinolone antibiotics.
Read more
Safety flag
magnesium dose 2001 mg exceeds UL (350 mg); Dose at 1001% of research dose
Dose or interaction risk detected. See ingredient page for details.
Overdose risk
Dose at 1001% of trial dose
Far above the published effective dose. Check tolerable upper intake limits.
Plain English

What’s inside

The main ingredients of this product, in plain language.

Magnesium2001 mgEvidence A

One of the most common deficiencies; corrects sleep, muscle cramps, and blood pressure.

Read about Magnesium →
Layer 3 · Evidence vault

Product data & verification

Hard numbers and independently checked status. Expand each block for its source.

The numbers

Price
$40
per bottle · 30 servings
Dose vs. research
Above trial dose 1001%
of published effective dose
$ / day at studied dose
$0.20
what one effective daily dose costs
$ / g active
$0.67
per gram of active substance
Independently checked

Data verification

COA status
Public
Evidence grade
A
Per-ingredient breakdown
AMagnesium

All product data is checked against original sources. Prices, doses, and testing status are updated when product pages change. Evidence grades are reviewed when new human RCTs are published. Read how we verify.

What's inside

Ingredient
Dose in this product
Trial dose
Evidence
2001 mg 667% of trial dose
300 mg
4.7 /5
High confidence Strong value signal
2,404 reviews across 3 platforms (3 sources)
Source diversity: 69%
Examine.comRedditTrustpilot
PraiseNootropics Depot holds a 4.7/5 rating on Trustpilot from 2,404 reviews. Customer
Last checked: 2026-08-20

Consumer signals

4.7 out of 5 across 2,404 verified reviews on 3 platforms.

High confidence

Consumer sentiment compiled from 3 public sources (Examine.com, Reddit, Trustpilot).

2,404 reviews · 4.7/5 · positive sentiment

Praise

Nootropics Depot holds a 4.7/5 rating on Trustpilot from 2,404 reviews. Customers repeatedly cite third-party testing transparency and fa...

Compiled from a Trustpilot Nootropics Depot listing located during manual research; not independently re-verified against the live page at build time.

1 thread discussed · mixed sentiment

Themes

Reddit users in the brand subreddit note that Magtein is a patented, licensed magnesium L-threonate, so most branded versions are functio...

Compiled from a Reddit r/NootropicsDepot listing located during manual research; not independently re-verified against the live page at build time.

mixed sentiment

Themes

Examine's magnesium page notes decent evidence for blood sugar and blood pressure benefits but calls the sleep evidence surprisingly thin...

Compiled from an Examine.com listing located during manual research; not independently re-verified against the live page at build time.

These are consumer sentiment signals. They do not measure whether the product actually works. See our evidence section for that.

Independent external anchors

Public sources on this same product, unrelated to NO1GEVITY. NIH DSLD is the US government's registered label database (shown verbatim). SuppCo.com is a separate, unaffiliated commercial site with no partnership or data-sharing arrangement with us. NO1GEVITY scores are computed independently of both.

Unaffiliated third-party site
SuppCo.com

SuppCo is a separate, unaffiliated supplement-tracking site with no partnership, data-sharing agreement, or business relationship with NO1GEVITY. We are not endorsed by them and they do not endorse us. The two facts below are individually verified against the manufacturer or NSF; the outbound link is provided only so readers can independently cross-check on a third-party site if they want to.

Tested by independent lab, Yes

What others say (unverified)

We aggregated external reviews. We didn't check their methodology. None of them are paid placements from us, but we can't guarantee the sources themselves received no product.

Trustpilot Nootropics Depot · 4.7
positive

Nootropics Depot holds a 4.7/5 rating on Trustpilot from 2,404 reviews. Customers repeatedly cite third-party testing transparency and fast shipping.

Read source → Unverified · we received no payment for this listing
Reddit r/NootropicsDepot
mixed

Reddit users in the brand subreddit note that Magtein is a patented, licensed magnesium L-threonate, so most branded versions are functionally similar. Some commenters say Nootropics Depot's version is fairly priced for the dose, while others point to cheaper alternatives like Jarrow MagMind or Life Extension Neuro-Mag.

Read source → Unverified · we received no payment for this listing
Examine.com
mixed

Examine's magnesium page notes decent evidence for blood sugar and blood pressure benefits but calls the sleep evidence surprisingly thin. A separate Examine FAQ says a magnesium and sleep meta-analysis found only a modest cut in sleep latency, with the authors calling current evidence insufficient for strong recommendations.

Read source → Unverified · we received no payment for this listing
Layer 3 · Evidence vault

Evidence, claims & regulation

Published evidence, claim checks, regulatory status and what could not be verified.

Evidence

Research behind this product

The studies that established the trial dose and evidence grade for each active ingredient in this product. Click through to read the original paper.

Important to know
MagnesiumMagnesium oxide has ~4% absorption and mostly acts as a laxative. Always check the salt form, not just 'magnesium'.

Editorial notes

Full clinical 3-capsule/day (2000 mg Magtein, 144mg elemental Mg) dose matching published cognitive studies; priced at $39.99 for the base size, with a range up to $179.99 for bulk sizes. Straightforward single-ingredient branded-Magtein product, no blend without listed amounts dilution.

Brand owners

Spot an error?

If you are the manufacturer or brand owner of Magtein Magnesium L-Threonate Capsules and believe any data on this page is incorrect (wrong dose, wrong ingredient, wrong price, missing certification, outdated status), you can request a correction.

We review every request, verify it against primary sources, and publish any accepted change with a dated note. Corrections from brand owners are treated the same as corrections from anyone else: verified before they move.

Request a correction →
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