AlbionMagnesium Bisglycinate is a chelated and highly bioavailable magnesium supplement, manufactured by Albion Laboratories, Inc. for Reflex. This form of magnesium is estimated to have an 80% bioavailability (with little to no side effects), compared with alternate forms like magnesium citrate that has a 90% bioavailability, but with a possible, laxative side effect) or magnesium oxide, thought to have a mere 4% bioavailability. Magnesium is vital to energy production, and many active individuals are prone to deficiency. Magnesium is a co-factor in over 300 reactions in the body; it also produces a mild relaxing effect, and so can be useful post-training. Properties of Magnesium: Supports normal energy-yielding metabolism; contributes to a reduction in tiredness and fatigue. Required for normal muscle function. Important for the maintenance on normal bones.