The form of magnesium determines absorption
Magnesium participates in more than three hundred enzymatic reactions in the body. In muscle function, it is responsible for the muscle cell resting state after contraction. If a muscle lacks sufficient magnesium relative to calcium, the cell membrane remains tense. This is felt as cramping or restlessness in the legs after exertion. Magnesium oxide, common on the market, is poorly absorbed and draws water into the bowel, causing loose stools. In magnesium bisglycinate, the mineral is bound to two glycine amino acids. This organic chelate passes through the intestinal wall via amino acid transport pathways and does not irritate the digestive tract.
Quality standards and dosing
Check the product label for the amount of elemental magnesium. A single capsule or scoop may weigh one thousand milligrams, but actual pure magnesium is often only a fraction of that. Choose a product where the binding agent is solely l-glycine without fillers.
- Elemental content: Ensure that the stated amount refers to pure elemental magnesium, not merely the salt compound.
- Pure chelate: Avoid blends where magnesium oxide is added to bisglycinate to boost numbers.
- Timing: Take your dose 30-60 minutes before going to sleep.
Practical everyday guidelines
Mix the powder with water or take capsules with a light evening snack. If you train hard and sweat heavily, your magnesium requirements increase. Glycine also acts as a calming neurotransmitter for the central nervous system, which supports relaxation after strenuous training.