Bloom Naturals Magtein Magnesium L-Threonat

Bloom Naturals · Capsule · 144 mg

Price/day

€1.17

Dose

144 mg

Servings/pack

Pack price

€34.99

Transparency Index

6.3/10

Acceptable An interesting specialty product for those specifically wanting to try Magtein — but for basic magnesium needs, glycinate or citrate typically offers better value.

Rating breakdown

Evidence for ingredient 6.0/10

Magnesium as a nutrient is well-supported. For magnesium L-threonate specifically, human data is intriguing but much thinner than for classic magnesium endpoints like deficiency correction or muscle/cramp issues.

Value for money 4.0/10

At over €1 per day, this product is expensive — and it delivers only 144 mg of elemental magnesium per daily serving.

Product quality 8.0/10

Magtein as a branded raw material is a plus. German manufacturing and a clean formulation stand out as above average for a specialty product.

Label honesty 7.0/10

Bloom stays relatively clean within permissible magnesium claims. The implicit brain narrative around Magtein should still be read critically.

Third-party testing 4.0/10

No strong independent certification like NSF or USP. Quality perception relies primarily on ingredient branding and manufacturer claims.

Product Description

Magtein Magnesium L-Threonate is not a standard magnesium supplement, but rather a specialized premium option. The rationale: this form is often associated with cognitive and neurological benefits.

What We Like

Magtein branded ingredient instead of generic L-threonate
Made in Germany
Clearly positioned as a specialty product
Plausible for users focused on brain/sleep benefits rather than classic muscle support

What We’re Missing

Expensive
Relatively low elemental magnesium per daily serving
Not ideal as a basic pick if the goal is simply correcting deficiency or getting value for money