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Momentous

Momentous Magtein Magnesium L-Threonate

  • Item Form: Capsule
  • Flavor: Unflavored
  • Primary Supplement Type: Magnesium
  • Number Of Items: 1

Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

This magnesium L-threonate capsule earns its premium mainly through NSF Sport certification and the specific chelate form, not general everyday value.

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ASIN: B09WWK4R2CCategory: Magnesium Supplements

Overview

Momentous' Magtein capsule delivers magnesium L-threonate, a specific chelated form of magnesium, at 145 mg per serving across 30 servings. The product is NSF Certified for Sport and comes in an unflavored capsule.

Magnesium L-threonate (branded Magtein) is marketed differently than common oxide or citrate forms, positioned here toward brain and rest support rather than general mineral maintenance. NSF Certified for Sport matters specifically to athletes who are drug tested, since it screens for banned substances.

  • 145 mg magnesium L-threonate per serving
  • 30 servings per container
  • NSF Certified for Sport
  • Unflavored capsule

Who it's for

Fits athletes under NSF testing requirements and anyone specifically seeking the L-threonate form of magnesium rather than a cheaper generic. Not the choice if you just want an everyday, budget magnesium for muscle cramps or general mineral intake.

Pros and cons

Pros
  • NSF Certified for Sport, batch tested for banned substances
  • Uses the L-threonate chelate, not a generic magnesium salt
  • Unflavored capsule, easy to stack with other supplements
Cons
  • 30 servings is only about a month's supply
  • L-threonate typically costs more than standard magnesium forms
  • No breakdown of elemental versus total compound weight

Performance notes

Momentous lists 145 mg of magnesium L-threonate per serving, unflavored, with 30 servings per container, roughly a month at one serving daily. NSF Certified for Sport means each batch is tested for banned substances, a detail relevant mainly to competing athletes.

Specifications

BrandMomentous
Capacity & performance
Age Range DescriptionAdult
Included components
Unit Count30
Other details
Item FormCapsule
FlavorUnflavored
Primary Supplement TypeMagnesium
Number Of Items1

Frequently asked questions

What form of magnesium is in Momentous Magtein?

It's magnesium L-threonate, the branded Magtein chelate, at 145 mg per serving.

Is Momentous Magtein NSF certified?

Yes, it's listed as NSF Certified for Sport.

How many servings does the Momentous Magtein model 7015 provide?

30 servings per container.