Magnesium Citrate
Magnesium Citrate is a tier 1 form of Magnesium, used in 1,580 on-market products and providing 16.2% elemental magnesium by weight.
1,580
on-market products
tier 1
quality tier
16.2%
elemental fraction
Basis: Mg3(C6H5O7)2, anhydrous granular (standard supplement-grade form)
Why this tier: Far more soluble than oxide across physiological pH, with a higher urinary Mg rise after a 25 mmol oral load (Lindberg 1990); produced the greatest serum and salivary Mg response of the three forms tested in a 60-day human RCT (Walker 2003).
Source: Lindberg 1990, PMID 2407766; Walker AF et al. 2003, Magnesium Research 16(3):183-191, PMID 14596323