BiOptimizers Magnesium Breakthrough vs Thorne Basic Nutrients 2/Day
Specs, prices, editor verdict, and who should buy which — compared side-by-side.
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
| Spec | BiOptimizers Magnesium Breakthrough | Thorne Basic Nutrients 2/Day |
|---|---|---|
| price | $40–$60 | $29–$39 |
| servings | 30 per bottle | 30/bottle |
| dose | 2 caps | 2 caps/day |
| certifications | cGMP, third-party tested | NSF GMP, third-party tested |
BiOptimizers Magnesium Breakthrough also publishes: forms
Thorne Basic Nutrients 2/Day also publishes: features
Who should buy which
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.
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.
Anyone wanting a clinically credible multivitamin without paying AG1 prices, or buyers with MTHFR mutations needing methylated forms.
You want a one-scoop daily greens powder (AG1), or you take individual supplements custom-tuned to your labs.