Home › Supplements › Magnesium Bisglycinate 650mg Capsules
Last updated: July 2026
⚡ Quick Answer
Magnesium Bisglycinate 650mg Capsules from Charge Products contain 650mg of magnesium bisglycinate (CAS 14783-68-7) per vegan HPMC capsule — providing approximately 91mg elemental magnesium. Bisglycinate is the technically precise name for magnesium glycinate: both terms describe the same chelated compound where one magnesium ion is bonded to two glycine molecules. Zero fillers. In-house encapsulated in Southend-on-Sea. Multiple authorised EU/UK health claims for magnesium apply. Food supplement — not a medicine.
Key Features at a Glance
Contents
✅ Food Supplement Notice: Magnesium Bisglycinate 650mg Capsules are supplied as a food supplement — not a medicine. Not intended to diagnose, treat, cure or prevent any disease. Food supplements should not replace a varied, balanced diet and healthy lifestyle.
⚠️ Consult your GP before taking this supplement if you have kidney (renal) impairment, are pregnant or breastfeeding, or are taking antibiotics (quinolones, tetracyclines) or bisphosphonates. Do not exceed 400mg elemental magnesium daily from supplements without clinical supervision.
What Is Magnesium Bisglycinate?
Magnesium Bisglycinate is a chelated form of magnesium in which one magnesium ion is bonded to two molecules of glycine — a naturally calming amino acid. The chemical name is magnesium diglycinate (CAS 14783-68-7, molecular formula C₄H₈MgN₂O₄). The chelation process creates a stable mineral-amino acid complex that is absorbed more efficiently than inorganic magnesium forms such as oxide or carbonate, and is significantly gentler on the digestive system.
Each capsule delivers 650mg of magnesium bisglycinate, providing approximately 91mg of elemental magnesium — around 14% of the bisglycinate compound weight by molecular ratio. This is higher elemental magnesium per capsule than many lower-strength magnesium glycinate products on the UK market. You can buy Magnesium Bisglycinate 650mg Capsules directly from Charge Products at chargeproducts.co.uk or on eBay with same-day UK dispatch.
Magnesium is an essential mineral involved in over 300 enzymatic reactions in the human body. It plays a central role in energy metabolism, protein synthesis, muscle and nerve function, electrolyte balance, and the maintenance of normal bones and teeth. UK population studies consistently show widespread suboptimal magnesium intake — making supplementation relevant for a broad range of adults.
Our Magnesium Bisglycinate 650mg Capsules are encapsulated in-house at our own UK facility, which holds a 5 Star Food Hygiene Rating awarded by Southend-on-Sea City Council. Zero fillers. Zero binders. Zero flow agents. Vegan HPMC capsule shell. Food supplement — not a medicine.
COMMONLY ASKED
Is Magnesium Bisglycinate the Same as Magnesium Glycinate?
Yes — they are chemically identical. Magnesium bisglycinate and magnesium glycinate both describe one magnesium ion bonded to two glycine molecules (CAS 14783-68-7, formula C₄H₈MgN₂O₄). The prefix "bis" simply means two — it is the more technically precise chemical name. "Glycinate" is the consumer shorthand used on most supplement labels. There is no functional, bioavailability or efficacy difference between products labelled bisglycinate and those labelled glycinate when both are fully chelated.
Authorised EU/UK Health Claims for Magnesium
Magnesium has 9 authorised EU/UK health claims — one of the most comprehensive claim sets of any food supplement ingredient. These claims are established and require no further qualification:
Authorised under retained EU Regulation 1924/2006 (GB NHC Register). Claims apply at a minimum of 56mg elemental magnesium per daily serving. Each 650mg capsule provides approximately 91mg elemental magnesium.
Magnesium Bisglycinate vs Other Magnesium Forms
| Form | Bioavailability | Digestion | Best For |
|---|---|---|---|
| Bisglycinate / Glycinate ✅ | High — chelated form, gut-protected | Excellent — no laxative effect | Sleep, calm, muscle, daily use |
| Citrate | Good | Loose stools at higher doses | Constipation, occasional use |
| Malate | Good | Generally well tolerated | Energy, muscle soreness |
| L-Threonate | Good — crosses blood-brain barrier | Well tolerated | Cognitive support |
| Oxide | Low (as low as 4%) | Laxative — draws water into bowel | Not recommended for daily supplementation |
Bioavailability comparison: Coudray et al. (2005, Magnesium Research) — tested ten magnesium compounds and found organic chelated forms significantly outperformed inorganic forms including oxide. PubMed 16548135
The Glycine Advantage — Why Bisglycinate Is Different
Glycine's Independent Sleep Role
Glycine is an inhibitory neurotransmitter in the brainstem and spinal cord. Japanese RCT data (Bannai et al., 2012 — PubMed 22293292) showed 3g glycine before bed reduced sleep onset time, improved sleep quality and reduced next-day fatigue. When you take magnesium bisglycinate, you receive both magnesium and a meaningful glycine dose in one capsule.
Stress & Cortisol Regulation
Magnesium acts as a co-factor in cortisol regulation and supports adrenal function. Low magnesium is associated with heightened stress reactivity and elevated cortisol. A 2026 dietary analysis found that individuals with low magnesium intake reported significantly higher subjective stress levels. Bisglycinate's superior absorption makes it particularly relevant for addressing this.
Muscle Function & Recovery
Magnesium regulates calcium channels in muscle cells, preventing excessive muscle contractions that cause cramping. It has an authorised EU/UK claim for normal muscle function. Bisglycinate's superior absorption means more elemental magnesium reaches muscle tissue compared to poorly absorbed forms like oxide.
Digestive Tolerance
Unlike magnesium citrate or oxide, bisglycinate does not draw water into the bowel. It is absorbed in the small intestine via amino acid transporters, bypassing the osmotic mechanism that causes the laxative effect of other forms. This makes it suitable for long-term daily supplementation and for those with sensitive digestion.
Full Product Specification
| Product Name | Magnesium Bisglycinate 650mg Capsules |
| Also Known As | Magnesium Glycinate · Magnesium Diglycinate · Magnesium Bisglycinate Chelate |
| CAS Number | 14783-68-7 |
| Molecular Formula | C₄H₈MgN₂O₄ |
| Molecular Weight | 172.43 g/mol |
| Strength Per Capsule | 650mg Magnesium Bisglycinate |
| Elemental Magnesium | ~91mg per capsule (~24% NRV) |
| Capsule Shell | Vegan HPMC (Hydroxypropyl Methylcellulose) |
| Other Ingredients | None — zero fillers, zero binders, zero flow agents |
| Suitable For | Vegans · Vegetarians · Gluten-free · Dairy-free |
| Allergens | None declared |
| Production | In-house encapsulated, Unit 1, 8 Towerfield Road, Southend-on-Sea, Essex SS3 9QE |
| FSA Rating | 5 Star Food Hygiene Rating — Southend-on-Sea City Council |
| Manufacturer | Big Idea Services Ltd · Co. No. 11645389 · Est. 2016 |
| Authorised Claims | 9 authorised EU/UK health claims for magnesium (see above) |
| GMC Category | Health & Beauty > Health Care > Vitamins & Dietary Supplements |
| Storage | Cool, dry place below 25°C. Keep away from direct sunlight. Keep out of reach of children. |
| Wholesale | Available — contact chargeproducts.co.uk/pages/contact |
How to Take Magnesium Bisglycinate 650mg Capsules
Where to Buy Magnesium Bisglycinate 650mg UK
Buy Magnesium Bisglycinate 650mg Capsules UK directly from Charge Products with same-day dispatch before 3:30pm. Order Magnesium Bisglycinate 650mg online via our Shopify store for direct dispatch, or on eBay for verified marketplace purchase with buyer protection. Where to buy magnesium bisglycinate UK — both options below ship from the same Southend-on-Sea facility with the same in-house stock.
WHOLESALE · TRADE · B2B
Magnesium Bisglycinate Wholesale UK · Bulk Supplier Since 2016
Big Idea Services Ltd, Co. No. 11645389 · 5 Star FSA · In-house encapsulation
Charge Products supplies magnesium bisglycinate wholesale UK, bulk magnesium glycinate UK, magnesium bisglycinate bulk supply, wholesale magnesium capsules UK and magnesium glycinate supplier UK to supplement manufacturers, capsule fillers, white-label brands, gym chains, health food retailers, eBay and Amazon FBA sellers, pharmacies, naturopaths, personal trainers, sports nutrition brands, and international resellers. Magnesium bisglycinate trade supply UK · bulk magnesium chelate UK · minimum order quantities available on enquiry. COA and SDS documentation on request. In-house UK stock. 5 Star FSA rated facility.
Enquire About Wholesale →Why Buy From Charge Products?
Co. No. 11645389
Food hygiene inspection
since 2016
Since 2016
Mon–Fri
and bulk supply
Related Products
Frequently Asked Questions
Is magnesium bisglycinate the same as magnesium glycinate?
Yes — they are chemically identical. Both names describe one magnesium ion bonded to two glycine molecules (CAS 14783-68-7). "Bisglycinate" is the technically precise name; "glycinate" is the common consumer shorthand. There is no functional or bioavailability difference.
How much elemental magnesium is in each 650mg capsule?
Each 650mg capsule provides approximately 91mg elemental magnesium — about 24% of the daily 375mg NRV. This is based on magnesium comprising approximately 14% of the molecular weight of the bisglycinate compound.
What are the authorised UK health claims for magnesium?
Magnesium has 9 authorised EU/UK health claims: normal energy-yielding metabolism · reduction of tiredness and fatigue · normal muscle function · normal functioning of the nervous system · normal psychological function · electrolyte balance · maintenance of normal bones and teeth · normal protein synthesis · has a role in cell division.
When is the best time to take magnesium bisglycinate?
Evening, approximately 30–60 minutes before bed, is preferred for sleep support — the glycine component promotes relaxation. Taking with food improves absorption. Daily consistency matters more than the specific time of day.
Is magnesium bisglycinate gentle on the stomach?
Yes — bisglycinate is one of the most stomach-friendly forms of magnesium. Unlike citrate or oxide, the chelated form is absorbed via amino acid transporters without drawing water into the bowel. No laxative effect at standard doses.
How does magnesium bisglycinate compare to magnesium oxide?
Magnesium oxide has very low bioavailability — as low as 4% in some studies — and commonly causes digestive discomfort. Magnesium bisglycinate is chelated and significantly more bioavailable, with no laxative effect. Chelated forms consistently outperform oxide in bioavailability research.
How long does magnesium bisglycinate take to work?
Most people notice improvements in sleep quality and muscle tension within 1–2 weeks. Broader mood, energy and stress effects develop over 4–8 weeks of consistent daily use.
Can I take magnesium bisglycinate with Vitamin D?
Yes — Vitamin D3 and magnesium work synergistically. Magnesium is required for the activation of Vitamin D in the body, and Vitamin D supports magnesium absorption and utilisation. They pair well together. Space magnesium from calcium by around 2 hours if taking both.
Is this product suitable for vegans?
Yes. The capsule shell is vegan HPMC. The magnesium bisglycinate ingredient is synthetically produced — not animal-derived. Zero fillers. Suitable for vegans and vegetarians.
Do you stock magnesium bisglycinate wholesale UK?
Yes. Charge Products supplies magnesium bisglycinate capsules wholesale UK to supplement manufacturers, white-label brands, gym chains, FBA sellers, health food retailers and international resellers. Contact us at chargeproducts.co.uk/pages/contact for trade pricing and MOQ.
What is your returns policy?
30-day returns on unopened products. Contact us via chargeproducts.co.uk for return instructions.
How fast is delivery?
Same-day dispatch on orders placed before 3:30pm Monday–Friday. Standard UK delivery 1–3 working days. Free UK delivery available — see current threshold on site.
Where can I buy magnesium bisglycinate 650mg in the UK?
Buy Magnesium Bisglycinate 650mg Capsules UK directly from Charge Products at chargeproducts.co.uk/products/magnesium-bisglycinate-650mg-capsules or on eBay at ebay.co.uk/itm/156003089019. Same-day UK dispatch before 3:30pm.
Is magnesium bisglycinate safe to take every day?
Magnesium bisglycinate is safe for daily use at standard supplemental doses. Do not exceed 400mg elemental magnesium daily from supplements without GP guidance. Each 650mg capsule provides ~91mg elemental magnesium. Consult your GP if you have kidney impairment, are pregnant, or take certain antibiotics or bisphosphonates.
What Our Customers Say
"I've been buying from Charge for about 7 or 8 years by now, and I can assure you everything I've bought is high quality with prompt delivery."
"Been ordering from you for years and recommending you — your service, delivery, packaging and product are of high standards."
"Ultra fast delivery and good quality product."
📚 Research References
Educational context only — not health claims. All referenced research is cited for informational purposes. Food supplement — not a medicine.
Coudray et al. (2005) — Magnesium Bioavailability Comparison
Magnesium Research — tested 10 magnesium compounds in magnesium-depleted rats. Organic chelated forms including bisglycinate showed significantly higher bioavailability than inorganic forms. Oxide absorption as low as 4%.
PubMed 16548135 →Bannai et al. (2012) — Glycine and Sleep Quality
Sleep and Biological Rhythms — RCT: 3g glycine before bed reduced sleep onset latency, improved subjective sleep quality and reduced daytime fatigue and sleepiness vs placebo. Sample: healthy adults with restricted sleep.
PubMed 22293292 →Abbasi et al. (2012) — Magnesium and Insomnia
Journal of Research in Medical Sciences — RCT in 46 older adults: magnesium supplementation improved insomnia severity, sleep efficiency, sleep onset latency, early morning awakening, and serum renin, melatonin and cortisol concentrations.
PubMed 23853635 →Zhang et al. (2022) — Magnesium and Sleep Duration
Sleep Medicine — analysis of 3,964 US adults: higher dietary magnesium intake was significantly associated with better sleep quality and longer sleep duration. Individuals with highest magnesium intake most likely to report good sleep.
PubMed 35659072 →Also Searched As
magnesium bisglycinate 650mg UK · magnesium bisglycinate capsules UK · buy magnesium bisglycinate UK · magnesium bisglycinate vs glycinate UK · magnesium glycinate 650mg capsules · magnesium bisglycinate for sleep UK · magnesium bisglycinate chelated UK · order magnesium bisglycinate UK · where to buy magnesium bisglycinate UK · magnesium glycinate 650mg UK · magnesium bisglycinate vegan UK · magnesium bisglycinate zero fillers UK · high strength magnesium bisglycinate UK · magnesium bisglycinate muscle cramps UK · magnesium bisglycinate anxiety UK · magnesium bisglycinate supplement UK · magnesium bisglycinate wholesale UK · bulk magnesium bisglycinate UK · magnesium bisglycinate capsules no fillers · chelated magnesium 650mg UK · magnesium bisglycinate 91mg elemental · magnesium glycinate capsule 650mg · magnesium glycinate bisglycinate same thing · magnesium for sleep UK · magnesium supplement UK · best magnesium supplement UK · magnesium glycinate capsules · magnesium bisglycinate CAS 14783-68-7 · magnesium bisglycinate HPMC vegan capsule UK · magnesium supplement for muscle cramps UK
| Amount of 650mg Capsules |
x60 Capsules, x100 Capsules, x120 Capsules, x180 Capsules, x300 Capsules, x365 Capsules, x 500 Capsules |
|---|
