Magnesium Bisglycinate 200mg
by Thorne
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Thorne Magnesium Bisglycinate delivers 200mg of elemental magnesium in chelated bisglycinate form, one of the most bioavailable and gut-friendly magnesium compounds available. Best for People with magnesium deficiency or low dietary intake and Those experiencing sleep difficulties or insomnia.
According to the AIScored 0–100 scoring system, Magnesium Bisglycinate 200mg by Thorne scores 74.0/100, ranking #5 out of 19 products in Magnesium (2026). Strongest category: Certifications (90.0/100). Weakest: Value For Money (60.0/100).
Is Magnesium Bisglycinate 200mg worth buying?
“Thorne's Magnesium Bisglycinate is a well-formulated 200mg supplement using the bisglycinate chelate form, which absorbs better and causes far fewer digestive issues than cheaper magnesium types. With NSF Certified for Sport verification and a 74/100 score, it's a reliable option for better magnesium absorption without the unwanted side effects of standard forms.”
What Do Reviewers Say About Magnesium Bisglycinate 200mg?
Sample excerpts from currently available source material used in this product analysis.
"Two days ago I ordered 2 of the new poly Nucs and a couple of sundrie items. Everything arrived very well packaged and within roughly 48 hours of ordering.Whilst the Apivar strips were a few pence dearer than other retailers this was more t..."
"Great service at a busy time.All items arrived and securely packaged. Fantastic communications throughout, really appreciated their time.I see people saying Thornes don't care, this is not our experience when using Thornes, if anything they..."
"Everything is fine but the dispatch and delivery do seem to take longer than reasonable. 2 to 3 weeks from order to delivery seems the norm. Its not a problem if youre not in need of the items. Usually things ordered online take a week at m..."
"I have been dealing with Thorne for years, I have always received 5 star service and quality goods. I was disappointed today when I phoned regarding a tap seal for a Konigin honey ripening tank. Although all Konigin ripening tanks and extra..."
"I'm new to beekeeping and unsure of what to order sometimes but I found Gill to be amazingly helpful. she guided me toward what I needed and I eventually made the purchase.The order itself took some time to get to the point where it was to..."
How does Magnesium Bisglycinate 200mg score?
Detailed score breakdown and key findings from our analysis of 9 reviews across 1 source.
Pros
- +Bisglycinate chelate form offers superior absorption and bioavailability vs. oxide or sulfate forms
- +Minimal gastrointestinal side effects — significantly less likely to cause loose stools than cheaper magnesium forms
- +Thorne Research holds NSF Certified for Sport certification — rigorous third-party purity and potency verification
- +Free from common allergens, artificial additives, and unnecessary fillers
- +Well-researched support for sleep quality, muscle relaxation, stress response, and migraine prevention
Cons
- -Premium price point — noticeably more expensive than standard magnesium oxide supplements
- -No usable product-specific user reviews available — provided reviews are from an unrelated UK beekeeping company
- -Multiple capsules per day may be needed to reach clinically studied therapeutic doses (310–420mg elemental)
- -Capsule size can be large for some users
Best For
Watch Out
- !All attached reviews are from Thornes Beekeeping Ltd (UK) — completely unrelated to Thorne Research supplements; scores are knowledge-based estimates only
- !Consult a physician if taking antibiotics, bisphosphonates, or diuretics — magnesium can interact with these
- !Very high doses may still cause loose stools even in bisglycinate form
- !Supplementation may be unnecessary if dietary magnesium intake (nuts, seeds, leafy greens) is already adequate
What is Magnesium Bisglycinate 200mg?
Magnesium Bisglycinate 200mg is a magnesium product by Thorne, scoring 74.0/100 on AIScored.
- • Shop Magnesium Bisglycinate 725mg Capsules x 360 at Holland & Barrett today, and discover what it could do for your health & wellness journey.
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)
Frequently Asked Questions
Is Magnesium Bisglycinate 200mg worth buying in 2026? ▼
What are the pros and cons of Magnesium Bisglycinate 200mg? ▼
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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