Magnesium Bisglycinate
Thorne's Magnesium Bisglycinate is the industry gold standard for sleep-promoting minerals, utilizing a highly bioavailable chelated form that minimizes GI upset. It is one of the few magnesium supplements that is NSF Certified for Sport, ensuring it is free from 200+ banned substances and contaminants.
Ingredients & Purity
Contains 200mg of Magnesium Bisglycinate per scoop. Uses monk fruit for sweetening instead of sugar or artificial sweeteners like aspartame.
Scientific Evidence
Magnesium bisglycinate has superior absorption rates in human trials compared to other forms. Thorne is a trusted partner of the Mayo Clinic and 11 US Olympic teams.
Brand Transparency
Thorne performs four rounds of testing on every batch. Full transparency on sourcing and NSF Certified for Sport status is verifiable on the NSF website.
Value Assessment
At roughly $0.80 per serving, it is more expensive than bulk powders but offers significantly higher purity and a guarantee of no heavy metal contamination.
Why Not Alternatives?
Unlike cheaper magnesium oxide or citrate found in drugstore brands (like Nature Made), bisglycinate is specifically bound to glycine, which has independent sleep-promoting properties. Most competitors use 'buffered' blends that sneak in low-quality magnesium oxide to lower costs.