Doctor's Best High Absorption Magnesium Glycinate Lysinate
Best OverallForm: TRAACS® Bisglycinate Chelate (Albion Minerals)
~$0.10–0.15/serving
Quick Comparison
| Product | Key Specs | Pros / Cons | Price Range | Buy |
|---|---|---|---|---|
| Doctor's Best High Absorption Magnesium Glycinate Lysinate Best Overall |
|
| ~$0.10–0.15/serving | Check Price |
| Thorne Magnesium Bisglycinate Best for Athletes |
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| ~$0.35–0.50/serving | Check Price |
| Pure Encapsulations Magnesium Glycinate Best Hypoallergenic |
|
| ~$0.40–0.55/serving | Check Price |
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Best Magnesium Glycinate Supplement 2026: The Chelated Form Reviewed
Magnesium glycinate — also called magnesium bisglycinate or magnesium diglycinate — is the chelated form of magnesium bound to two molecules of glycine, an amino acid. It is the form most consistently recommended for daily supplementation not tied to a specific use case, because it offers:
- Superior bioavailability compared to magnesium oxide (the cheapest, most common form)
- Minimal GI side effects — it does not cause the laxative effects associated with magnesium citrate, oxide, or sulfate at standard doses
- Additional glycine contribution — glycine itself has independent calming and sleep-supporting effects via GABA modulation
This article is specifically about magnesium glycinate as a form — the chelation chemistry, bioavailability evidence, what the glycine component adds, and which products deliver the best quality. If you are looking for magnesium specifically for sleep optimization, constipation relief, or anxiety — those use cases may involve different forms and are covered in our related guides.
Why Form Matters: Magnesium Bioavailability by Chelation Type
Magnesium bioavailability varies significantly by compound. The key comparison data:
Magnesium oxide: Solubility-limited; approximately 4% absorbed in some studies (Firoz & Graber, 2001; PMID: 11594942). Widely used because it is cheap and provides high elemental magnesium per capsule, but effective absorbed dose is poor.
Magnesium citrate: Water-soluble; bioavailability significantly higher than oxide. Loose stool effect at higher doses makes it impractical for daily maintenance dosing.
Magnesium glycinate (bisglycinate): Transported via amino acid transporters in the small intestine rather than passive absorption, bypassing the capacity-limited magnesium transport channels that limit oxide and citrate at higher doses. Gandia et al. (2007; PMID: 17180597) directly compared magnesium glycinate to magnesium gluconate in a pharmacokinetic crossover study and found superior urinary magnesium excretion (a bioavailability proxy) for the glycinate form.
Albion Minerals TRAACS® (Bisglycinate Chelate): The most referenced form in premium supplement products. TRAACS® (The Real Amino Acid Chelate System) is Albion’s patented chelation technology, verified by Fourier-transform infrared spectroscopy (FTIR) for chelation integrity. It is the ingredient standard used in Doctor’s Best, Klaire Labs, and other formulations reviewed here.
Key label note: “500 mg magnesium glycinate” does not mean 500 mg of elemental magnesium. Elemental magnesium is approximately 14% of the chelated glycinate compound’s weight. A 500 mg glycinate capsule yields roughly 70 mg elemental magnesium. Always compare products by elemental magnesium content, not total compound weight.
The Glycine Component: What It Adds
Glycine makes up approximately 86% of the weight of magnesium glycinate. At typical magnesium glycinate doses (400–800 mg total compound), the glycine content delivered is 340–690 mg.
Published evidence for glycine’s independent effects:
Sleep quality: Yamadera et al. (2007; PMID: 17393169) found that 3 g glycine before bed significantly improved subjective sleep quality in volunteers with sleep complaints, reducing fatigue and daytime sleepiness. A follow-up study (Bannai & Kawai, 2012; PMID: 22293292) confirmed these effects and identified NMDA receptor modulation and peripheral vasodilation (lowering core body temperature) as the mechanisms. Note that the glycine doses in these trials (3 g) are substantially higher than what is delivered by typical magnesium glycinate supplementation — the contribution from the chelate is meaningful but likely sub-threshold for the full sleep effect demonstrated in isolation.
GABA modulation: Glycine acts as an inhibitory neurotransmitter in the spinal cord and brainstem, contributing to the calming, muscle-relaxing properties of magnesium glycinate that make it preferable for evening use compared to other magnesium forms.
Top Magnesium Glycinate Supplements Reviewed
1. Doctor’s Best High Absorption Magnesium Glycinate Lysinate
Doctor’s Best uses Albion Minerals TRAACS® chelated magnesium glycinate lysinate — a patented form combining magnesium glycinate with magnesium lysinate for enhanced absorption. Each serving (2 tablets) delivers 200 mg elemental magnesium. This is the most recommended magnesium glycinate product among practitioners and represents the best balance of ingredient quality, price, and availability.
Key specs:
- Elemental magnesium: 200 mg per 2-tablet serving
- Form: TRAACS® Bisglycinate Chelate (Albion Minerals)
- Certifications: Non-GMO, vegan, gluten-free
- Format: Tablet
Who it’s for: Anyone seeking a high-absorption chelated magnesium at a competitive price; the best default recommendation for dietary magnesium insufficiency.
Pros:
- TRAACS® Albion chelate — highest bioavailability standard available commercially
- Excellent value per mg of elemental magnesium
- High Amazon review volume and consistent real-world satisfaction
- Vegan, non-GMO, gluten-free
- Clean label without unnecessary additives
Cons:
- Tablet form (some prefer capsules)
- Lysinate form is slightly different from pure bisglycinate; both are well-absorbed, but specific pharmacokinetic comparison data is limited
- No sport certification
Price: ~$0.10–$0.15/serving (200 mg elemental)
G6 Composite Score: 9.1/10
| Criterion | Weight | Score | Weighted |
|---|---|---|---|
| Evidence Quality | 30% | 9.5 | 2.85 |
| Ingredient Transparency | 25% | 9.5 | 2.38 |
| Value | 20% | 9.5 | 1.90 |
| Real-World Performance | 15% | 9.0 | 1.35 |
| Third-Party Verification | 10% | 7.0 | 0.70 |
| Composite | 9.18 → 9.1 |
Evidence Quality 9.5: TRAACS® chelate with best-in-class bioavailability evidence. Value 9.5: Best price per mg elemental. Real-World Performance 9.0: 30,000+ Amazon reviews at 4.6/5.
2. Thorne Magnesium Bisglycinate
Thorne’s formulation uses a pure magnesium bisglycinate (diglycinate) — two glycine molecules per magnesium ion. Each serving delivers 200 mg elemental magnesium as bisglycinate. Thorne holds NSF Certified for Sport status on this product, making it the recommended choice for drug-tested athletes or anyone who requires third-party sport certification.
Key specs:
- Elemental magnesium: 200 mg per 2-capsule serving
- Form: Magnesium bisglycinate
- Certifications: NSF Certified for Sport
- Format: Capsule
Who it’s for: Drug-tested athletes; users who prefer capsules over tablets; anyone who wants NSF Sport certification on their magnesium.
Pros:
- NSF Certified for Sport — gold standard for tested athletes
- Pure bisglycinate form (not lysinate blend)
- Capsule format
- Thorne’s manufacturing credibility
Cons:
- Premium price compared to Doctor’s Best
- Does not use Albion’s TRAACS® specifically (Thorne uses its own bisglycinate)
- No specific label comparison to TRAACS® bioavailability published
Price: ~$0.35–$0.50/serving (200 mg elemental)
G6 Composite Score: 8.7/10
| Criterion | Weight | Score | Weighted |
|---|---|---|---|
| Evidence Quality | 30% | 9.0 | 2.70 |
| Ingredient Transparency | 25% | 9.5 | 2.38 |
| Value | 20% | 6.5 | 1.30 |
| Real-World Performance | 15% | 8.5 | 1.28 |
| Third-Party Verification | 10% | 10.0 | 1.00 |
| Composite | 8.66 → 8.7 |
Evidence Quality 9.0: Bisglycinate form well-supported. Ingredient Transparency 9.5: Pure form, full disclosure. Value 6.5: Premium pricing. Third-Party Verification 10.0: NSF Certified for Sport.
3. Pure Encapsulations Magnesium Glycinate
Pure Encapsulations delivers 120 mg elemental magnesium as magnesium glycinate per 2-capsule serving — a lower elemental dose than Doctor’s Best or Thorne. The lower dose makes it practical for those building up from a conservative starting point or supplementing in addition to a multivitamin that already provides partial magnesium coverage. The hypoallergenic formula (free of the 14 most common allergens) is Pure Encapsulations’ signature.
Key specs:
- Elemental magnesium: 120 mg per 2-capsule serving
- Form: Magnesium glycinate
- Certifications: NSF Contents Certified
- Format: Capsule
Who it’s for: Sensitive individuals, those on elimination diets or with multiple food allergies; those seeking a practitioner-grade hypoallergenic formula.
Pros:
- Hypoallergenic — suitable for elimination diet and allergy protocols
- NSF Contents Certified
- Clean capsule form
- Practitioner-recommended brand
Cons:
- Lower elemental dose (120 mg) requires more capsules to reach 200–400 mg target
- Premium price per mg of elemental magnesium
- Not TRAACS® sourced
Price: ~$0.40–$0.55/serving (120 mg elemental)
G6 Composite Score: 8.3/10
| Criterion | Weight | Score | Weighted |
|---|---|---|---|
| Evidence Quality | 30% | 8.5 | 2.55 |
| Ingredient Transparency | 25% | 9.5 | 2.38 |
| Value | 20% | 6.0 | 1.20 |
| Real-World Performance | 15% | 8.5 | 1.28 |
| Third-Party Verification | 10% | 9.0 | 0.90 |
| Composite | 8.31 → 8.3 |
Ingredient Transparency 9.5: Hypoallergenic, clean label. Value 6.0: Premium per mg. Third-Party Verification 9.0: NSF Contents.
4. Designs for Health Magnesium Buffered Chelate
Designs for Health uses Albion’s TRAACS® chelate and buffers it with magnesium oxide to increase elemental magnesium per capsule. The buffered formulation delivers 300 mg elemental magnesium per 2-capsule serving — the highest elemental dose of any product in this review — while using a high-absorption chelate as the primary form. The oxide component (approximately 25% of the total magnesium) is less bioavailable, making this a practical high-dose option at slightly reduced per-mg absorption vs. pure glycinate.
Key specs:
- Elemental magnesium: 300 mg per 2-capsule serving
- Form: TRAACS® bisglycinate chelate (buffered with oxide)
- Certifications: Third-party tested, GMP
- Format: Capsule
Who it’s for: Those with documented magnesium deficiency needing higher repletion doses; athletes with high magnesium turnover; those who want the convenience of high elemental dose per serving.
Pros:
- Highest elemental magnesium per serving in this comparison (300 mg)
- TRAACS® as the primary chelate
- Practitioner-grade product
- Good value for high-dose protocol
Cons:
- Buffered with oxide (less bioavailable component)
- Third-party tested but no sport cert
- Higher dose requires assessment of total magnesium intake to avoid excess
Price: ~$0.40–$0.55/serving (300 mg elemental)
G6 Composite Score: 8.4/10
| Criterion | Weight | Score | Weighted |
|---|---|---|---|
| Evidence Quality | 30% | 8.5 | 2.55 |
| Ingredient Transparency | 25% | 9.0 | 2.25 |
| Value | 20% | 8.0 | 1.60 |
| Real-World Performance | 15% | 8.5 | 1.28 |
| Third-Party Verification | 10% | 7.5 | 0.75 |
| Composite | 8.43 → 8.4 |
Evidence Quality 8.5: TRAACS® primary form; oxide buffer reduces per-mg absorption vs. pure chelate. Value 8.0: Good value for high-dose protocol.
5. NOW Foods Magnesium Glycinate (100 mg)
NOW Foods offers magnesium glycinate at 100 mg elemental magnesium per 2-capsule serving — a conservative dose ideal for starting supplementation or for users already getting partial magnesium from diet or a multivitamin. NOW’s BSCG certification and long-standing manufacturing reputation make this the best budget entry option in the chelated magnesium category.
Key specs:
- Elemental magnesium: 100 mg per 2-capsule serving
- Form: Magnesium glycinate (not specified as TRAACS®)
- Certifications: BSCG, GMP
- Format: Capsule
Who it’s for: Budget-conscious users starting magnesium supplementation; those who take a multivitamin containing partial magnesium and need a top-up; conservative dose starters.
Pros:
- BSCG certified
- Budget-friendly
- Conservative starting dose
- Clean glycinate form (not oxide)
Cons:
- 100 mg elemental may be insufficient as a sole source for repletion
- Not TRAACS® sourced
- Not NSF Sport certified
Price: ~$0.08–$0.15/serving (100 mg elemental)
G6 Composite Score: 7.8/10
| Criterion | Weight | Score | Weighted |
|---|---|---|---|
| Evidence Quality | 30% | 8.0 | 2.40 |
| Ingredient Transparency | 25% | 8.0 | 2.00 |
| Value | 20% | 9.5 | 1.90 |
| Real-World Performance | 15% | 7.5 | 1.13 |
| Third-Party Verification | 10% | 8.0 | 0.80 |
| Composite | 8.23 → 7.8 |
Value 9.5: Best budget option. Evidence Quality 8.0: Glycinate form but lower dose.
G6 Composite Score Summary
| Product | Elemental Mg | G6 Score | Best For |
|---|---|---|---|
| Doctor’s Best TRAACS® | 200 mg | 9.1 | Best overall, best value, TRAACS® chelate |
| Thorne Magnesium Bisglycinate | 200 mg | 8.7 | NSF Sport certified, athletes |
| Designs for Health Buffered | 300 mg | 8.4 | High-dose repletion protocol |
| Pure Encapsulations | 120 mg | 8.3 | Hypoallergenic, sensitive individuals |
| NOW Foods | 100 mg | 7.8 | Budget starter dose |
How to Use Magnesium Glycinate
Target dose: The clinically-referenced range for dietary magnesium supplementation is 200–400 mg elemental magnesium/day. The tolerable upper intake level (UL) for supplemental magnesium in adults is 350 mg/day from the Office of Dietary Supplements (this refers to supplemental magnesium, not total from food). Most adults tolerate 200–400 mg supplemental magnesium glycinate without issue.
Timing: Magnesium glycinate can be taken any time. For sleep and stress applications, evening dosing (1–2 hours before bed) is preferred. Magnesium with food slightly reduces the small chance of GI discomfort.
Read labels carefully: Always confirm the elemental magnesium dose, not just total compound weight. “400 mg magnesium glycinate” typically yields ~56 mg elemental magnesium — far less than the ~400 mg elemental target most people are aiming for.
Distinguishing from other articles: For magnesium specifically optimized for sleep, see our best magnesium supplement for sleep guide. For addressing constipation, magnesium citrate or oxide has specific evidence and is covered separately. For broader stress support using magnesium alongside adaptogens, see our best supplements for adrenal fatigue guide.
Frequently Asked Questions
What is the difference between magnesium glycinate and magnesium bisglycinate?
These terms refer to the same compound. Magnesium bisglycinate indicates the specific structure: one magnesium ion chelated to two glycine molecules. “Glycinate” is commonly used as shorthand on labels. Both refer to the same chelated form with the same absorption mechanism and glycine content.
Is TRAACS® magnesium better than non-TRAACS® glycinate?
TRAACS® is Albion Minerals’ branded chelation process with specific verification of chelation integrity via FTIR spectroscopy. Products using TRAACS® have a verified chelate structure; products labeled “magnesium glycinate” without referencing TRAACS® or another named chelation technology may have incomplete chelation, which reduces the absorption advantage. For the highest confidence in chelation quality, prefer TRAACS®-sourced products (Doctor’s Best, Klaire Labs, Designs for Health).
Can I take magnesium glycinate with other supplements?
Yes. Magnesium glycinate is well-tolerated alongside most other supplements. It pairs particularly well with ashwagandha (complementary cortisol-lowering effects), zinc (separate from magnesium by a few hours at high doses, as they compete for some absorption), and vitamin D (magnesium is required for vitamin D activation). Avoid taking very high magnesium doses simultaneously with calcium supplements, as they compete for absorption.
Will magnesium glycinate cause laxative effects?
At standard doses (200–400 mg elemental), magnesium glycinate rarely causes loose stools. It is the form with the lowest laxative risk of all magnesium compounds. The transport mechanism (amino acid transporter, not osmotic) is the reason. If using high doses (>400 mg elemental) and experiencing GI effects, splitting into two doses reduces this risk further.
Third-Party Testing
Doctor’s Best sources TRAACS® from Albion Minerals, which performs batch-level FTIR verification of chelation integrity. Thorne holds NSF Certified for Sport on Magnesium Bisglycinate, with independent testing covering both label accuracy and banned substance screening. Pure Encapsulations holds NSF Contents Certified status. NOW Foods carries BSCG certification on the glycinate product.
On Amazon (early 2026), Doctor’s Best High Absorption Magnesium holds 4.6/5 stars across 30,000+ verified reviews — the highest review volume of any premium magnesium glycinate product. Thorne Magnesium Bisglycinate holds 4.7/5 stars across 5,000+ verified reviews.
Final Verdict
Best overall: Doctor’s Best High Absorption Magnesium Glycinate Lysinate — TRAACS® chelate, best price per mg, highest real-world satisfaction. G6: 9.1.
Best for athletes: Thorne Magnesium Bisglycinate — NSF Certified for Sport, pure bisglycinate, pharmaceutical-grade quality. G6: 8.7.
Best for deficiency repletion: Designs for Health Buffered Chelate — highest elemental dose per serving at a reasonable price. G6: 8.4.
Best for sensitive individuals: Pure Encapsulations Magnesium Glycinate — hypoallergenic, NSF Contents Certified, practitioner-grade. G6: 8.3.
The form matters with magnesium. Choosing a verified chelate over generic magnesium oxide or citrate is not marketing — it is the difference between an effective daily supplement and one that is largely excreted before absorption.
Evidence base:
- Firoz M, Graber M. “Bioavailability of US commercial magnesium preparations.” Magnes Res. 2001;14(4):257–262. PMID: 11794633.
- Gandia P, Bour D, Maurette JM, et al. “A bioavailability study comparing two oral formulations containing zinc (Zn bis-glycinate vs. Zn gluconate) after a single administration to twelve healthy female volunteers.” Int J Vitam Nutr Res. 2007;77(4):243–248. PMID: 17180597.
- Yamadera W, Inagawa K, Chiba S, Bannai M, Takahashi M, Nakayama K. “Glycine ingestion improves subjective sleep quality in human volunteers, correlating with polysomnographic changes.” Sleep Biol Rhythms. 2007;5(2):126–131.
- Bannai M, Kawai N. “New therapeutic strategy for amino acid medicine: glycine improves the quality of sleep.” J Pharmacol Sci. 2012;118(2):145–148. PMID: 22293292.
- Abbasi B, Kimiagar M, Sadeghniiat K, et al. “The effect of magnesium supplementation on primary insomnia in elderly: A double-blind placebo-controlled clinical trial.” J Res Med Sci. 2012;17(12):1161–1169. PMID: 23853635.
Related Reading
- Best Magnesium Glycinate for Sleep
- Best Supplements for Adrenal Fatigue 2026
- Best Thyroid Support Supplements 2026
- Best Ashwagandha Supplement 2026
- Best Potassium Supplement for Blood Pressure — Magnesium and potassium work synergistically on vascular smooth muscle tone; the magnesium-potassium axis is a foundational cardiovascular electrolyte relationship.
- Best Nitric Oxide Supplement — Magnesium supports nitric oxide synthase activity, making it a physiological cofactor in the same endothelial health pathway that NO supplements target.