What Is Magnesium Lysinate Glycinate? The Chelated Form Explained

Key takeaways

Magnesium lysinate glycinate is a chelated form of magnesium bonded to two amino acids, lysine and glycine, which increases absorption compared to non-chelated forms like magnesium oxide.
It is closely related to magnesium bisglycinate (which uses two glycine molecules instead of one glycine and one lysine), and both forms are considered high-bioavailability options with a low risk of GI upset.
The form is best known from Albion's TRAACS chelate technology, used by Doctor's Best in their High Absorption Magnesium product.
Research on chelated magnesium for sleep is promising but still limited. A 2021 meta-analysis (Mah and Pitre, PMID: 33865376) found supplementation reduced sleep onset latency by roughly 17 minutes in older adults with insomnia.

SleepStack uses the closely related magnesium bisglycinate form at 275mg elemental per serving, the dose used in sleep research.

What is magnesium lysinate glycinate?

Magnesium lysinate glycinate is a chelated mineral supplement. The magnesium ion is chemically bonded to two amino acids: L-lysine and L-glycine. The word "chelate" comes from the Greek for claw, which describes how the amino acids wrap around the mineral to form a stable ring structure. This ring protects the magnesium from degradation in the digestive tract and allows it to enter the intestinal wall via amino acid transport pathways rather than competing with other minerals for absorption.

In non-chelated forms such as magnesium oxide and magnesium carbonate, magnesium ions must dissolve freely in the gut before absorption can occur. They compete with calcium, zinc, and iron for transport proteins, and they can bind to phytates and other dietary compounds that block uptake. The NIH Office of Dietary Supplements notes that forms of magnesium that dissolve well in liquid and bind to organic compounds, including aspartate, citrate, glycinate, and lactate, show better absorption than inorganic forms like oxide and carbonate.

The Albion TRAACS connection

The most widely recognised magnesium lysinate glycinate supplement is manufactured using Albion's TRAACS process, which stands for The Real Amino Acid Chelate System. Albion is a mineral ingredient supplier that developed a standardised method for producing amino acid chelates at a consistent molecular weight. Doctor's Best licenses this specific chelate for their High Absorption Magnesium product. When that label says "100% chelated," it means the magnesium in the formula is entirely in the Albion lysinate glycinate form, with no magnesium oxide or carbonate blended in.

This matters because some supplement brands list a chelated form on the front of the label while blending cheaper, lower-absorption forms into the formula to reduce cost. Checking the supplement facts panel for elemental magnesium per serving and confirming no oxide appears in the ingredients list is the practical way to verify what you are actually buying.

How lysinate glycinate differs from bisglycinate

Magnesium bisglycinate, also sold as magnesium glycinate, uses two glycine molecules as chelating agents. Magnesium lysinate glycinate uses one lysine and one glycine. Both are fully chelated amino acid forms with comparable absorption profiles. No clinical trial has compared the two head-to-head for any outcome. In practice, the naming difference matters for label literacy, not for predicting how a supplement will perform.

The term "magnesium glycinate" is also used loosely in the industry. Some products labelled "glycinate" are actually bisglycinate. Others are lysinate glycinate. Both are legitimate chelated forms, and both carry the high-absorption, low-GI-upset profile that makes the glycinate family popular for sleep and general deficiency.

Research linking higher magnesium intake to better sleep outcomes has not distinguished between chelate types. A 2023 systematic review covering 7,582 subjects (Arab et al., PMID: 35184264) found associations between magnesium status and sleep outcomes including duration, onset latency, and daytime sleepiness. Studies in this review used magnesium from various forms, and the authors called for larger, longer randomised controlled trials before firm conclusions can be drawn about specific forms.

The practical takeaway: the lysinate glycinate name is a chemistry descriptor, not a marketing claim. What matters in practice is the elemental magnesium dose per serving, not which pair of amino acids did the chelating.

Magnesium lysinate glycinate vs magnesium glycinate: is there a real difference?

For most supplement buyers, the functional difference between magnesium lysinate glycinate and magnesium bisglycinate is negligible. Both are amino acid chelates. Both are absorbed via the same intestinal transport pathway. Both avoid the laxative effects associated with magnesium citrate at higher doses and the poor absorption associated with magnesium oxide.

The comparison table below covers the main magnesium forms buyers encounter:

Form	Chelated?	Absorption	GI tolerance	Primary use
Magnesium oxide	No	Low (approx. 4%)	Poor, laxative risk	Antacid, laxative
Magnesium citrate	Partial	Good	Moderate, laxative at high doses	General supplementation
Magnesium lysinate glycinate	Yes	High	Excellent	Sleep, general deficiency
Magnesium bisglycinate	Yes	High	Excellent	Sleep, anxiety, deficiency
Magnesium L-threonate	Yes	Good, CNS-targeted	Good	Cognitive function

Where lysinate glycinate and bisglycinate do differ slightly is in the amino acid co-passengers. Glycine has been studied for its role in sleep quality independently, with some research suggesting it may have mild calming properties. Lysine is involved in protein synthesis and plays a role in calcium absorption and anxiety modulation, though its contribution at supplement doses is less studied in a sleep context. Neither effect is large enough to be a deciding factor in choosing one chelate over the other.

The more important variable is whether the supplement declares its elemental magnesium content clearly and whether it contains any blended lower-absorption forms that reduce effective dose.

What does the research say about chelated magnesium for sleep?

Sleep is the most common reason people search for magnesium glycinate supplements. The evidence is promising, but it requires honest framing.

A 2021 meta-analysis by Mah and Pitre (PMID: 33865376) pooled three randomised controlled trials in 151 older adults with insomnia. Magnesium supplementation reduced sleep onset latency by 17.36 minutes compared to placebo. Total sleep time improved but did not reach statistical significance. The reviewers rated the quality of evidence as low-to-very-low, meaning the findings are worth taking seriously but are not yet strong enough to support firm clinical recommendations.

The 2023 systematic review by Arab and colleagues (PMID: 35184264) looked at both observational studies and RCTs across 7,582 subjects. Observational data consistently linked higher magnesium intake with better sleep quality, longer sleep duration, and less daytime sleepiness. The RCT evidence was more mixed. The authors called for longer trials, ideally beyond 12 weeks, with larger and more diverse sample populations.

Both reviews used magnesium doses in the 200-400mg elemental range. No trial has specifically compared lysinate glycinate to bisglycinate for sleep. Both forms fall under the broader category of chelated magnesium in the literature.

User experience reports from people who take chelated magnesium supplements echo the observational data in specific, non-marketing terms: a calm but not sedated feeling, less waking between 2am and 4am, and relief from leg cramps that were disrupting sleep without the user realising it. These accounts are consistent with magnesium's known roles in muscle relaxation and nerve function, though they are not clinical evidence.

An honest limitation

Magnesium deficiency is common in Western diets, with surveys suggesting a significant portion of adults consume less than the recommended daily amount from food alone. If someone is deficient, supplementation may noticeably improve sleep quality. If their magnesium levels are already adequate, the benefit may be smaller or absent.

Sleep disorders have many causes, including poor sleep hygiene, obstructive sleep apnea, anxiety disorders, and hormonal changes. Magnesium supplementation is not a substitute for a clinical assessment when sleep problems are severe, persistent, or affecting daily function. If that describes your situation, speaking with a doctor is the right first step.

How to take magnesium lysinate glycinate

Dose

Clinical sleep studies used 200-400mg of elemental magnesium daily. When reading a supplement label, look specifically for elemental magnesium per serving. The total weight of a chelated compound is much higher than the elemental dose. A capsule listed as containing 500mg of magnesium lysinate glycinate chelate may deliver only 50-100mg of elemental magnesium, depending on the molecular weight of the specific chelate. Always check the supplement facts panel rather than the front-of-pack claim.

The NIH recommends 310-420mg daily for adults from all sources combined, food and supplements included. Taking a supplement that puts you significantly over that total is unlikely to benefit sleep further and may cause digestive discomfort.

Timing

Most people take magnesium 30-60 minutes before bed. There is no strong clinical evidence requiring this timing, but it aligns with common practice. Glycine, one of the amino acid chelating agents, may have mild calming properties that support a pre-sleep routine, making an evening dose reasonable.

What to look for on the label

"Chelated" or "amino acid chelate" listed under the magnesium form
Elemental magnesium declared per serving in the supplement facts panel
No magnesium oxide listed as a secondary magnesium source
Third-party testing certification from NSF, USP, or Informed Sport if quality verification matters to you

For buyers comparing lysinate glycinate products with bisglycinate alternatives, SleepStack uses magnesium bisglycinate at 275mg elemental per serving. It is single-ingredient, with no blended fillers or cheaper magnesium forms, and backed by a 30-night guarantee. The chelate type differs in name; the elemental dose and absorption profile are comparable.

Frequently asked questions

Is magnesium lysinate glycinate the same as magnesium glycinate?

They are closely related but not identical. Magnesium glycinate, also called bisglycinate, is chelated with two glycine molecules. Magnesium lysinate glycinate is chelated with one glycine and one lysine molecule. Both are amino acid chelates with high bioavailability and good GI tolerability. In practice, the two forms perform similarly for most purposes, including sleep support and general magnesium repletion. The naming difference matters for label literacy, not for predicting how a supplement will feel.

What is the difference between magnesium lysinate glycinate and magnesium bisglycinate?

Magnesium bisglycinate uses two glycine amino acids as chelating agents. Magnesium lysinate glycinate uses one glycine and one lysine. Both are fully chelated forms with comparable absorption profiles, and no clinical trials have compared the two head-to-head for sleep or any other outcome. The Albion TRAACS trademark is associated specifically with lysinate glycinate. Bisglycinate is produced by multiple manufacturers under different proprietary names. For most buyers, the practical difference is minimal.

What are the benefits of magnesium lysinate glycinate?

The benefits are those of well-absorbed magnesium: support for muscle relaxation, nerve function, sleep quality, and general magnesium repletion. Research suggests chelated magnesium may reduce sleep onset latency in people with insomnia (Mah and Pitre, 2021, PMID: 33865376). A 2023 systematic review (Arab et al., PMID: 35184264) found associations between magnesium intake and improved sleep duration and daytime functioning, though the RCT evidence remains limited. The lysine and glycine amino acids used in the chelate are both involved in muscle and nerve function independently.

Does magnesium lysinate glycinate cause side effects?

Side effects are uncommon at standard doses. Because it is a chelated form, magnesium lysinate glycinate is much less likely to cause the loose stools or diarrhoea associated with magnesium oxide or high-dose magnesium citrate. Some people report mild digestive discomfort when starting supplementation, and taking the supplement with food may reduce this. The NIH notes that magnesium intakes above 350mg per day from supplements, not counting food, may cause adverse effects. Check your total intake if you combine multiple supplements that contain magnesium.

Is magnesium lysinate glycinate good for sleep?

Some research supports chelated magnesium for sleep, particularly in people who are magnesium-deficient or in older adults. A 2021 meta-analysis (PMID: 33865376) found magnesium supplementation reduced sleep onset latency by roughly 17 minutes compared to placebo in older adults with insomnia. The reviewers noted this evidence is low-to-moderate quality and called for larger trials. Magnesium glycinate and lysinate glycinate are the forms most commonly recommended for sleep because they avoid the laxative effect of other forms at sleep-relevant doses. Results vary, and persistent sleep problems warrant a conversation with a doctor.

What does "100% chelated" mean on a magnesium supplement?

"100% chelated" means all of the magnesium in the product is in amino acid chelate form, with no magnesium oxide or magnesium carbonate blended in. Some lower-cost supplements advertise a chelated form on the front label while using a formula that is partly or mostly composed of cheaper, lower-absorption forms. When evaluating any magnesium supplement, check the supplement facts panel for the elemental magnesium per serving and confirm no oxide appears as a secondary magnesium source.

How much magnesium lysinate glycinate should I take?

Dose depends on the elemental magnesium per serving, not the total compound weight. Sleep research has generally used 200-400mg of elemental magnesium daily. The NIH recommends 310-420mg daily for adults from all sources combined. For a lysinate glycinate supplement, look at the supplement facts panel for "elemental magnesium" specifically, since a 500mg capsule of the chelated compound may deliver considerably less than 500mg elemental. Start at a lower dose and increase gradually if needed. Consult a doctor before supplementing if you take prescription medications, as magnesium can interact with certain antibiotics and blood pressure drugs.

Sources

Arab A, Rafie N, Amani R, Shirani F. (2023). The Role of Magnesium in Sleep Health: a Systematic Review of Available Literature. Biol Trace Elem Res. 201(1):121-128. PMID: 35184264
Mah J, Pitre T. (2021). Oral magnesium supplementation for insomnia in older adults: a Systematic Review and Meta-Analysis. BMC Complement Med Ther. 21(1):125. PMID: 33865376
National Institutes of Health Office of Dietary Supplements. Magnesium Fact Sheet for Health Professionals. https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/
National Institutes of Health Office of Dietary Supplements. Magnesium Fact Sheet for Consumers. https://ods.od.nih.gov/factsheets/Magnesium-Consumer/
Ranade VV, Somberg JC. (2001). Bioavailability and pharmacokinetics of magnesium after administration of magnesium salts to humans. Am J Ther. 8(5):345-357. (Cited via Examine.com magnesium overview; no PMID available from current research data.)