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Independent·Affiliate-disclosed·Spec-verified·Updated June 23, 2026
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Head-to-head buyer guide

BiOptimizers Magnesium Breakthrough vs Thorne Magnesium Bisglycinate

Specs, prices, editor verdict, and who should buy which - compared side-by-side.

By Ryan · Founder
Published May 3, 2026
Quick verdict

BiOptimizers Magnesium Breakthrough (mid, $40–$60) vs Thorne Magnesium Bisglycinate (mid, $52) - different tools for different jobs (see the per-product details below).

Compared on 3 shared specs · same category (supplement).

BiOptimizers Magnesium Breakthrough capsule bottle with all 7 forms of magnesium
BiOptimizers

Magnesium Breakthrough

The magnesium that turned the category from "buy whatever's on the shelf" into "wait, which form?" - seven types in one capsule, from the brand that built its name on the question.

PRICE
$40–$60
SCORE
8.0 / 10
View at BiOptimizers
Thorne
Thorne

Magnesium Bisglycinate

Magnesium is one of the few supplements with a genuine population-level case, but the form is everything. Thorne uses the chelated bisglycinate form most people actually tolerate.

PRICE
$52
View at Thorne
The verdict

These are close picks. Both score in the same range. The right call depends on buyer profile - read the per-buyer recommendations below.

Side-by-side specs

SpecBiOptimizers Magnesium BreakthroughThorne Magnesium Bisglycinate
price$40–$60$52
servings30 per bottle60/jar
dose2 caps200mg elemental/serving
certificationscGMP, third-party testedNSF Certified for Sport

BiOptimizers Magnesium Breakthrough also publishes: forms

Thorne Magnesium Bisglycinate also publishes: form, sweetener

Who should buy which

Pick the BiOptimizers Magnesium Breakthrough if

Buyers who want a credible all-purpose magnesium without researching which form to take, and who can tolerate aggressive brand marketing in exchange for a well-formulated stack.

Skip if

You already know you want a specific form (glycinate for sleep, threonate for cognition), or you prefer minimalist clinician-brand aesthetics like Thorne or Pure Encapsulations.

Pick the Thorne Magnesium Bisglycinate if

Anyone who wants a well-absorbed, gentle magnesium for evening or recovery use, or who reacted badly to cheap magnesium oxide.

Skip if

You already get enough magnesium from diet, or you want a capsule rather than a mix-in powder.

Go deeper

FULL REVIEW
Read the BiOptimizers Magnesium Breakthrough review →
FULL REVIEW
Read the Thorne Magnesium Bisglycinate review →