Pure Encapsulations Magnesium Glycinate 120mg - Bioavailable Magnesium Chelate Tiredness and Fatigue Supplement - 90 Capsules
by Pure Encapsulations
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Pure Encapsulations Magnesium Glycinate delivers 120mg of chelated magnesium per capsule, a well-tolerated form that's gentler on the gut than oxide or citrate. Best for People with sensitive stomachs who react badly to magnesium oxide or citrate and Light sleepers wanting a gentle evening wind-down aid.
According to the AIScored 0–100 scoring system, Pure Encapsulations Magnesium Glycinate 120mg - Bioavailable Magnesium Chelate Tiredness and Fatigue Supplement - 90 Capsules by Pure Encapsulations scores 68.0/100, ranking #16 out of 24 products in Magnesium (2026). Strongest category: Ingredient Quality (78.0/100). Weakest: Certifications (35.0/100).
What Do Reviewers Say About Pure Encapsulations Magnesium Glycinate 120mg - Bioavailable Magnesium Chelate Tiredness and Fatigue Supplement - 90 Capsules?
Sample excerpts from currently available source material used in this product analysis.
"I’ve found myself less stressed since taking these. Two is too strong though and makes me feel groggy so I only take one which is much better"
"Not sure these are for me. I thought my sleepless nights and stress could be cured a little with magnesium - that's what I was told, perhaps I lacked magnesium. Turns out - they made me sleep BUT made me pee up to 3 times a night, and then..."
"Seems good, it's a supplement hard to know bought because supposed to be a high quality"
"I’ve used this exact product before and it worked very well for sleep. However, this specific bottle had zero effect for me, despite no changes in how I take it. I then purchased another bottle from the same brand which worked again as expe..."
"Best Magnesium Glycinate out there. once you go with Pure you can't go with any other brand. I've tried many from cheap ones to high street ones and this is the best."
How does Pure Encapsulations Magnesium Glycina... score?
Detailed score breakdown and key findings from our analysis of 11 reviews across 1 source.
Pros
- +Chelated glycinate form is well absorbed and easier on the stomach than cheaper magnesium salts
- +Multiple reviewers report better sleep and reduced evening stress
- +Clean label: no gluten, GMOs, artificial colours, sweeteners, or unnecessary binders
- +Flexible 1-4 capsule dosing lets sensitive users start low (one reviewer found two caps too strong)
- +Strong brand reputation among repeat buyers comparing it favourably to cheaper alternatives
Cons
- -120mg per capsule is low — reaching a clinical 300-400mg dose means burning through the tub in roughly a month
- -One reviewer reported a bottle that did nothing despite previous batches working, raising batch consistency questions
- -Pricier on Amazon than in-store, per a long-term buyer
- -Not vegan (capsule shell), which rules it out for plant-based users
- -No third-party testing disclosed for this listing
Best For
Watch Out
- !Two capsules left one reviewer groggy — start with one
- !One user experienced increased night-time urination and next-day grogginess
- !Possible batch-to-batch variability flagged by a repeat buyer
- !At 120mg per cap, single-capsule dosing sits well below typical study doses
What is Pure Encapsulations Magnesium Glycinate 120mg - Bioavailable Magnesium Chelate Tiredness and Fatigue Supplement - 90 Capsules?
Pure Encapsulations Magnesium Glycinate 120mg - Bioavailable Magnesium Chelate Tiredness and Fatigue Supplement - 90 Capsules is a magnesium product by Pure Encapsulations in capsule form, scoring 68.0/100 on AIScored.
- • Active Ingredients: Provides 120 mg of magnesium per capsule, contributing to normal functioning of the nervous system and psychological function.
- • Take 1-4 capsules daily, in divided doses, with meals Tiredness and Fatigue: Intake of magnesium-glycinate contributes to normal energy-yielding metabolism and reduction of tiredness and fatigue Other Benefits: This supplement also assists with electrolyte balance, as well as maintenance of bones, teeth, muscles and joints Pure Quality: Our magnesium glycinate supplements are made with only premium ingredients sourced from trusted suppliers and guided by our nutritional experts, then carefully manufactured and tested to verify their potency and purity Free From: All Pure Encapsulations products are free from wheat, eggs, tree nuts, peanuts, gluten, artificial colours, flavours, sweeteners, coatings and shellacs, GMOs, unnecessary binders, fillers and preservatives.
Is Pure Encapsulations Magnesium Glycinate 120mg - Bioavailable Magnesium Chelate Tiredness and Fatigue Supplement - 90 Capsules Independently Tested?
No Third-Party Testing Visible
We could not find evidence of independent third-party testing for this product. This doesn't mean it's unsafe, but independent verification provides additional assurance.
How We Score Supplements
Our methodology analyses review data, ingredient science, and product information, then scores each product on a 0-100 scale across evidence-based categories:
Effectiveness
How well the product delivers its claimed benefits, based on reviews and ingredient evidence.
Ingredient Quality
Bioavailable forms, clinically effective dosages, clean label, minimal fillers.
Value for Money
Price relative to ingredient quality, dosage count, and effectiveness.
Side Effects Profile
Higher score = fewer side effects. 100 means virtually no adverse reactions reported.
Certifications & Testing
Third-party lab testing, GMP certification, and independent quality verification.
Overall Score
Weighted combination of all factors. Our bottom-line recommendation.
Price History (90 days)
Quick Facts
- Form
- Capsule
- Dose
- 120 mg
- Servings
- 90
- Vegan
- No
Frequently Asked Questions
Is Pure Encapsulations Magnesium Glycinate 120mg - Bioavailable Magnesium Chelate Tiredness and Fatigue Supplement - 90 Capsules worth buying in 2026? ▼
What are the pros and cons of Pure Encapsulations Magnesium Glycinate 120mg - Bioavailable Magnesium Chelate Tiredness and Fatigue Supplement - 90 Capsules? ▼
Is Pure Encapsulations Magnesium Glycinate 120mg - Bioavailable Magnesium Chelate Tiredness and Fatigue Supplement - 90 Capsules third-party tested? ▼
What the Data Says About Magnesium
Why is magnesium oxide less effective than glycinate?
Oxide scores 21 points lower than glycinate in our testing — and it's not close on ingredient quality either. Across 17 magnesium products in our database, glycinate averages 74.3/100 overall. Oxide sits at 53/100. That's a gap you can feel.
The ingredient quality difference is even starker: 83.3 for glycinate vs 37.0 for oxide. A 46.3-point gap. The best glycinate in our database, Solgar Magnesium Glycinate 400mg, scores 80/100 overall with 88/100 on ingredient quality. The oxide product (Nature Made) manages just 52 on effectiveness and 37 on ingredient quality.
The reason is bioavailability. Magnesium oxide has roughly 4% absorption — most of it passes straight through your gut unused. Glycinate is chelated (bound to the amino acid glycine), which your intestines absorb much more efficiently. You also get fewer digestive side effects, since unabsorbed magnesium in the gut is what causes the laxative effect oxide is known for.
Oxide is cheap, which is why it's still everywhere. But cheap per pill means nothing if your body can't use it. Glycinate or citrate (avg 74.5/100) are both better choices.
Which form of magnesium is best for sleep, anxiety, or muscle cramps?
Glycinate for sleep and anxiety. Citrate for cramps. L-threonate for brain function. Each form has a different strength, and our scores back this up.
Sleep and anxiety → Glycinate. Averaging 74.3/100 across our database, with the best (Solgar Glycinate 400mg) hitting 80/100. Glycine, the amino acid it's bound to, acts as an inhibitory neurotransmitter — it calms your nervous system on its own. That's a two-for-one benefit you don't get from other forms. Thorne Bisglycinate (74/100) is another solid option at a lower dose.
Muscle cramps → Citrate. Averaging 74.5/100 overall with 85.0 on ingredient quality. Citrate absorbs well and is gentler on your wallet than glycinate. Solgar Citrate leads the pack at 77/100. If cramps are your main issue, this is the practical choice.
Brain function → L-Threonate. Life Extension Neuro-Mag scores 73/100. This is the only form shown to meaningfully raise magnesium levels in the brain by crossing the blood-brain barrier. It's pricier, but nothing else does what it does.
All-round absorption → Doctor's Best High Absorption tops our entire magnesium database at 82/100 overall (83 effectiveness, 88 ingredient quality) using chelated magnesium.
The one form to skip? Oxide at 53/100. Its 4% absorption rate makes it a poor choice no matter what you're taking it for.
Disclaimer: AIScored provides research-backed summaries based on publicly available reviews and product information. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Affiliate links may earn us a commission at no extra cost to you.
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