Jigsaw Health MagSRT

Jigsaw Health's MagSRT is aimed at people who've tried regular magnesium and gotten GI side effects — a sustained-release delivery system is the whole point of the product, not just a marketing footnote.

It uses Albion's patented dimagnesium malate in a sustained-release matrix, paired with Quatrefolic 5-MTHF, P5P (active B6), and methylcobalamin — all named, active forms rather than generic folic acid or cyanocobalamin (Jigsaw MagSRT, Jigsaw explainer). Dosing is fully disclosed at 500 mg magnesium per serving with no proprietary blend (Jigsaw MagSRT).

Every batch is third-party tested at ISO 17025-accredited labs with lab reports posted online, and listings carry ConsumerLab.com Verified and third-party label-claim marks (Jigsaw explainer, Walmart Business listing).

No recalls or lawsuits found; the trade-off is a multi-tablet daily regimen priced above commodity magnesium (Jigsaw MagSRT). A peer-reviewed Scottsdale Magnesium Study was conducted on this specific product (Jigsaw explainer) — more direct evidence than either Doctor's Best or Moon Juice can point to, which is why it sits at the top of this category.