Magnesium lysinate glycinate is a form of supplemental magnesium where the mineral is chemically bonded (chelated) to two amino acids: glycine and lysine. You’ll most commonly see it sold as “magnesium bisglycinate lysinate chelate,” and it’s designed to improve how well your body absorbs magnesium compared to simpler, cheaper forms like magnesium oxide. The chelation process wraps the magnesium ion in amino acids, which helps it survive your digestive tract intact and pass more easily through the intestinal wall.
How Chelation Works
In basic magnesium supplements like oxide or sulfate, the magnesium is paired with a simple salt. When it hits your stomach acid, it separates quickly and can react with other compounds in your gut, reducing how much actually gets absorbed. In a chelated form, the magnesium is bonded directly to amino acids at the molecular level. Think of the amino acids as an escort that keeps the magnesium stable through digestion and helps shuttle it across the intestinal lining using the same pathways your body uses to absorb protein.
For magnesium lysinate glycinate specifically, the magnesium ion is bonded to both glycine (the smallest, simplest amino acid) and lysine (an essential amino acid your body can’t make on its own). This dual-amino-acid approach creates a chelate with a small molecular weight and a neutral electrical charge, both of which make it easier for the compound to slip through the gut wall. The most recognized version of this chelate is manufactured under the Albion Minerals brand and carries a certification called TRAACS (The Real Amino Acid Chelate System), which verifies the chelate is fully reacted, has a molecular weight under 800 Daltons, and maintains stability through digestion.
How It Compares to Other Magnesium Forms
A lab simulation published in the journal Nutrients tested 15 different magnesium supplements through a model that mimics the human stomach and small intestine. The magnesium glycinate lysinate chelate (sold as Doctor’s Best High Absorption Magnesium) was among the top performers. It released nearly all of its magnesium in stomach conditions and showed efficient absorption in the simulated small intestine under both fasted and fed conditions. That put it in the same top tier as several other well-absorbed formulations, and well ahead of the poorest performers.
One important caveat: this study only tested absorption in a lab model, not in human participants. The researchers noted that no organic magnesium supplement (including the glycinate lysinate chelate) was tested in living subjects during the trial, so real-world absorption rates still need direct confirmation. Still, the in vitro results align with the general understanding that chelated magnesium is absorbed more readily than inorganic forms like oxide, which contains a higher percentage of elemental magnesium per tablet but delivers far less of it into your bloodstream.
What Glycine and Lysine Each Contribute
The amino acids in this supplement aren’t just carriers. They have their own biological roles, which is part of the appeal of this particular chelate.
Glycine acts as a calming neurotransmitter in the brain and spinal cord. A 2017 review found that supplemental glycine can improve sleep quality, reduce inflammation, and help manage metabolic conditions like diabetes. Glycine also has antioxidant properties and plays a supporting role in mental health. This is why magnesium glycinate (with or without the lysine component) is often marketed specifically for sleep and relaxation.
Lysine is an essential amino acid, meaning you need to get it from food or supplements because your body can’t produce it. It plays a critical role in collagen formation. Lysine modifications are part of a complex chain of reactions that create the cross-links holding collagen fibers together, giving structural strength to skin, bones, tendons, and blood vessels. Lysine is also involved in calcium absorption and immune function. Including it in the chelate gives the supplement a small but meaningful nutritional bonus beyond the magnesium itself.
Digestive Tolerance
One of the most practical differences between magnesium forms is what they do to your gut. Magnesium oxide and magnesium sulfate are well known for causing loose stools, cramping, and a laxative effect. That’s actually why magnesium oxide is sometimes used to treat constipation in children.
Magnesium glycinate (and by extension, the glycinate lysinate chelate) is considered one of the gentlest forms on the digestive system. Because the chelated magnesium is absorbed more efficiently in the small intestine, less of it continues into the large intestine where it would draw water into the bowel and trigger that laxative response. If you’ve tried other magnesium supplements and experienced stomach discomfort, this form is one of the most commonly recommended alternatives.
Elemental Magnesium Content
One thing that catches people off guard with chelated magnesium is the label math. Because the magnesium is bonded to relatively large amino acid molecules, the percentage of actual (elemental) magnesium per capsule is lower than in something like magnesium oxide. A typical serving of magnesium lysinate glycinate chelate delivers about 100 mg of elemental magnesium per tablet, meaning you may need two or three tablets to reach a meaningful daily dose.
When comparing supplements, always look for the elemental magnesium number on the label rather than the total weight of the chelate compound. A capsule might contain 500 mg of magnesium bisglycinate lysinate but only deliver 100 mg of actual magnesium. The trade-off is that a higher proportion of that 100 mg gets absorbed compared to cheaper forms where a larger listed dose may pass straight through you.
Who Typically Uses It
People choose magnesium lysinate glycinate for a few overlapping reasons. The most common is simply correcting a magnesium deficiency with a form that won’t cause digestive problems. Since glycine has calming properties, this chelate is also popular among people looking to support sleep quality or reduce feelings of anxiety. Cleveland Clinic lists magnesium glycinate among the forms worth considering for anxiety-related use, in part because of glycine’s role as an inhibitory neurotransmitter.
It’s also a common choice for people taking magnesium long-term for muscle cramps, headaches, or general wellness, where daily tolerability matters more than it would for a one-time dose. The combination of high absorption, low digestive side effects, and the added benefits of both amino acids makes it one of the more versatile (and more expensive) magnesium options on the market.