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Last updated: September 2026
300mg bisglycinate per tablet · 86mg magnesium (23% NRV) per 2 tablets · Chelated · 120 to 1,000 tablets
Magnesium Glycinate Tablets 300mg UK: 86mg Magnesium (23% NRV) per Two Tablets, Chelated Bisglycinate
Each tablet holds 300mg of magnesium bisglycinate, which provides 43mg of magnesium. Two tablets a day give 86mg, 23% of the reference value, enough for all ten authorised magnesium claims, including the reduction of tiredness and fatigue and normal muscle function. We declare the elemental figure, not just the compound weight, because that is the number the claims are measured against. Packed in Southend-on-Sea, where we have supplied magnesium since 2016.
Two a day · 120 to 1,000 tablets164,000+ verified marketplace sales5 Star Food Hygiene Rating
on orders over £10
before 3:30pm Mon to Fri
unused, sealed packs
3 interest-free instalments on £50+
Quick answer
Charge Products Magnesium Glycinate Tablets contain 300mg of chelated magnesium bisglycinate per tablet, providing 43mg of elemental magnesium. The serving is two tablets a day: 600mg of bisglycinate, 86mg of magnesium, 23% of the nutrient reference value. That is above the 15% threshold, so all ten authorised magnesium health claims apply, including the reduction of tiredness and fatigue, normal muscle function, normal psychological function and the maintenance of normal bones. Packs of 120, 200, 300, 500 and 1,000 tablets. Food supplement, not a medicine.
Key features at a glance
- 300mg magnesium bisglycinate per tablet, providing 43mg of magnesium (11% NRV)
- Two-tablet serving: 86mg magnesium, 23% NRV: the elemental figure is declared, not hidden behind the compound weight
- Chelated bisglycinate: magnesium bound to two glycine molecules; 14.3% magnesium by weight, which is what a fully reacted bisglycinate delivers
- Magnesium contributes to a reduction of tiredness and fatigue (authorised claim)
- Magnesium contributes to normal muscle function (authorised claim)
- Magnesium contributes to normal psychological function (authorised claim)
- Seven further authorised magnesium claims, all listed and explained below
- Gentle format: glycinate is chosen over oxide and citrate for tolerance at everyday servings
- Value size: 1,000 tablets is 500 days at two a day; 25,000 for trade
- UK supplier since 2016: 164,000+ verified marketplace sales, 5 Star Food Hygiene Rating, packed in our own Essex unit
- Wholesale and white label available
On this page
The ten claims explained · What is it? · First-time buyer guide · Tablets vs capsules · Understanding the numbers · Specification · Pack size guide · How to take · Where to buy · Wholesale · Related products · FAQ · References
Food supplement: not a medicine
This product is a food supplement. It is not intended to diagnose, treat, cure or prevent any condition. Food supplements should not replace a varied, balanced diet and a healthy lifestyle.
Kidney function and medication: read before buying
The kidneys clear excess magnesium. If you have reduced kidney function or kidney disease, do not take magnesium supplements without your doctor's agreement. Magnesium can reduce the absorption of tetracycline and quinolone antibiotics and bisphosphonates: leave at least two hours between them. Some diuretics change magnesium levels in either direction; check with your GP or pharmacist.
Check with your GP first if you
are pregnant or breastfeeding, take any regular medication, or have a medical condition. Not suitable for under 18s. Do not exceed two tablets a day; supplementary magnesium above 400mg a day can cause loose stools, though at 86mg this serving sits well below that.
Declared per tablet and per serving
300mg is the compound. 86mg is the magnesium.
300mg
bisglycinate per tablet
43mg
magnesium per tablet
600mg
bisglycinate per 2 tablets
86mg
magnesium per 2 tablets
23%
NRV per 2 tablets
14.3%
magnesium by weight
Magnesium glycinate is mostly glycine by weight. A product that says "300mg magnesium glycinate" and lets you assume 300mg of magnesium is overstating it about seven-fold. We put both numbers on the label and on this page: 300mg of the compound, 43mg of magnesium, per tablet. The nutrient reference value for magnesium is 375mg, so two tablets provide 23%.
Why 23% matters: an authorised claim can only be used when a serving provides at least 15% of the NRV. Two tablets clear that with room to spare, which is why every magnesium claim on this page is used lawfully. One tablet, at 11%, would not qualify on its own.
The ten magnesium claims, and what each one means
Magnesium carries ten authorised health claims in Great Britain. The wording in bold is fixed by law; the explanation is ours and only explains the mechanism. It is not an extra promise.
| Authorised claim (register wording) | What it means |
|---|---|
| Magnesium contributes to a reduction of tiredness and fatigue | Magnesium is needed by the enzymes that turn food into usable energy. When intake is adequate, those reactions run normally, which is what the register wording describes. |
| Magnesium contributes to normal energy-yielding metabolism | ATP, the body's energy currency, is only biologically active when bound to magnesium. Hundreds of energy-releasing enzymes depend on that magnesium-ATP complex. |
| Magnesium contributes to normal muscle function | Muscle fibres contract when calcium enters and relax when it is pumped out again. Magnesium is required for the relaxation phase and for the pumps that reset the fibre. |
| Magnesium contributes to normal functioning of the nervous system | Nerve cells rely on magnesium to regulate the flow of ions across their membranes, which is how signals are generated and passed on. |
| Magnesium contributes to normal psychological function | The same nerve-signalling role underpins this claim: magnesium is a cofactor in the pathways that carry ordinary brain activity. |
| Magnesium contributes to electrolyte balance | Magnesium is itself an electrolyte and is needed by the sodium-potassium pump, which maintains the balance of the other electrolytes inside and outside cells. |
| Magnesium contributes to normal protein synthesis | Ribosomes, the structures that assemble proteins, need magnesium ions to hold their shape and function. |
| Magnesium contributes to the maintenance of normal bones | Around 60% of the body's magnesium is in bone, where it sits in the mineral crystal and influences how bone-building cells work. |
| Magnesium contributes to the maintenance of normal teeth | Tooth enamel and dentine are mineral structures laid down by the same processes as bone, and magnesium is part of that mineral matrix. |
| Magnesium has a role in the process of cell division | Copying DNA and dividing a cell need magnesium-dependent enzymes at several steps, which is why the register lists it here. |
Claims we do not make
Sleep, stress, anxiety, relaxation and muscle cramp are not authorised magnesium claims in Great Britain. Muscle cramp was assessed and rejected. You will not find those words used as benefits anywhere on this page.
What are magnesium glycinate tablets 300mg?
A food supplement tablet in which magnesium is supplied as magnesium bisglycinate: one magnesium ion bound to two molecules of the amino acid glycine. Each tablet contains 300mg of that compound. Because glycine makes up most of the weight, the magnesium content is 43mg per tablet; the two-tablet daily serving provides 86mg, 23% of the nutrient reference value.
Magnesium is a mineral the body cannot make. It is a cofactor for more than 300 enzymes, most of the body's store is in bone, and the rest is inside cells doing the work the ten claims above describe. Dietary sources include green leafy vegetables, nuts, seeds, wholegrains and beans. A supplement tops up intake; it does not replace those foods.
Glycinate is chosen for tolerance. Magnesium oxide is cheap and concentrated but poorly absorbed and laxative at modest amounts; citrate absorbs well but can loosen stools; bisglycinate is the form most people find gentle at everyday servings. The trade-off is that it carries less magnesium per milligram, which is why we declare the elemental figure rather than leave you to guess.
First-time buyer guide
Read 300mg as the compound
Every magnesium glycinate product should give you two figures: the weight of the glycinate and the weight of magnesium in it. Ours are 300mg and 43mg per tablet. If a competitor gives only one number, ask which it is.
Two tablets, with food
Take two a day with a meal. Together with the evening meal is the most common routine; one morning, one evening is fine too. Swallow whole with water.
Space it from other minerals
Magnesium competes with iron, zinc and calcium for absorption. Leave two hours between them, and between magnesium and tetracycline or quinolone antibiotics.
Gentle, but not weightless
86mg from bisglycinate is a mild serving and well under the 400mg supplementary level associated with loose stools. If you notice any digestive change, drop to one tablet for a week.
Kidneys first
If you have any kidney impairment, talk to your doctor before any magnesium supplement. This is the one group for whom magnesium is not a casual purchase.
Pick the size by the calendar
120 tablets is 60 days. 300 is 150 days, 1,000 is 500 days and the lowest cost per serving. Tablets keep well sealed, cool and dry.
Tablets vs capsules: which magnesium glycinate?
| Magnesium glycinate tablets 300mg | Magnesium glycinate capsules 650mg | |
|---|---|---|
| Compound per unit | 300mg magnesium bisglycinate | 650mg magnesium bisglycinate |
| Magnesium per unit | 43mg (11% NRV) | 85mg (23% NRV) |
| Daily serving | 2 tablets: 86mg, 23% NRV | 2 capsules: 170mg, 45% NRV |
| Excipients | Tablet binders, declared on label | None: powder in a vegan HPMC shell |
| Best for | Value, long-term use, households | No fillers, higher magnesium per serving |
| Pack sizes | 120 to 1,000 tablets | 30 to 500 capsules |
Both are the same compound with the elemental figure declared. Choose by what you want from the format: the tablets for cost per serving, the capsules for a higher magnesium serving with nothing else in the shell.
Understanding the numbers
Why bisglycinate is about 14% magnesium
Magnesium weighs 24.3 and each glycine 75, so a fully reacted bisglycinate (one magnesium, two glycines) is at most 14.1% magnesium. This product's 86mg from 600mg is 14.3%, within rounding of that ceiling. A figure of 18% or more means oxide has been blended in; a figure around 14% means it has not.
Why we declare per two tablets
UK labelling rules require the nutrient figure per daily serving as directed. Two tablets is the directed serving, so 86mg and 23% NRV are the label figures. We also give the per-tablet figure so that anyone taking one can see what they are getting.
What tablets contain that capsules do not
A tablet has to be pressed and hold together, which needs binders and a flow agent. These are ordinary permitted excipients, declared on the label in full. They are the reason a tablet costs less per serving than a capsule, and the reason we do not describe tablets as having no fillers.
The 375mg reference value
The NRV for magnesium is 375mg a day for adults. It is a labelling reference, not a target for supplements; most people get a fair share from food. 86mg supplements that intake by 23% without pushing anyone near the tolerable supplementary level.
Full specification
| Parameter | Detail |
|---|---|
| Product | Magnesium Glycinate Tablets 300mg |
| Active per tablet | 300mg magnesium bisglycinate (chelated), providing 43mg magnesium (11% NRV) |
| Serving | 2 tablets daily: 600mg magnesium bisglycinate, 86mg magnesium (23% NRV) |
| Nutrient reference value | Magnesium 375mg |
| Form | Tablet |
| Ingredients | Magnesium bisglycinate; tablet excipients as declared on the label |
| Authorised claims | Ten magnesium claims, listed above, all applicable at the 2-tablet serving |
| Directions | 2 tablets a day with food; do not exceed the stated dose |
| Storage | Cool, dry, out of direct sunlight, lid closed; keep out of reach of children |
| Pack sizes | 120, 200, 300, 500, 1,000 tablets; 25,000 trade |
| Packed by | Charge Products, Southend-on-Sea, Essex, 5 Star Food Hygiene Rating |
Pack size guide
| Pack | Days at 2 a day | Servings |
|---|---|---|
| 120 tablets | 60 | 60 |
| 200 tablets | 100 | 100 |
| 300 tablets | 150 | 150 |
| 500 tablets | 250 | 250 |
| 1,000 tablets | 500 | 500 |
| 25,000 tablets | Trade | 12,500 |
How to take magnesium glycinate tablets
1. Two a day
Together, or one morning and one evening. Do not exceed two tablets a day.
2. With food
Swallow whole with water at a meal. Any time of day suits.
3. Space from other minerals
Two hours apart from iron, zinc, calcium and from tetracycline or quinolone antibiotics.
Do not exceed the stated serving
Food supplements should not be used as a substitute for a varied, balanced diet and a healthy lifestyle. Keep out of reach of children. If you take any medication or have a medical condition, check with your GP before use; see the kidney and medication box at the top of the page.
Where to buy magnesium glycinate tablets UK
You can buy magnesium glycinate tablets UK-wide direct from this page: choose 120, 200, 300, 500 or 1,000 tablets above and add to basket. If you are looking for where to buy chelated magnesium tablets UK shoppers can check on a marketplace, the same tablets are on our eBay store, where Charge Products holds 99.7% positive feedback across 164,000+ sales. However you order, stock leaves Southend-on-Sea the same day before 3:30pm, Monday to Friday. Customer service is open 9:00am to 3:30pm on weekdays.
Wholesale · Trade · B2B
Magnesium Glycinate Tablets Wholesale UK · Bulk Supplier Since 2016
We supply wholesale magnesium glycinate tablets UK brands and retailers can document: the 25,000-tablet trade pack from this page, bulk magnesium tablets by the case, white label magnesium glycinate in your own packs, and magnesium trade supply UK-wide with the elemental figures and claims wording ready for your label.
Who buys from us: health food shops · sports nutrition brands · white-label start-ups · marketplace and FBA sellers · nutritional therapists · gyms · pharmacies · online retailers · EU and export buyers.
25,000-tablet trade pack
On this page; larger quantities quoted per order.
White / private label
Tablets in your branded pots with the 86mg / 23% NRV declaration.
Claims-ready copy
Ten authorised claims in register wording, supplied with the order.
Email sales@chargeproducts.co.uk with the quantity and format you need.
Related products
- Magnesium glycinate capsules 650mg: same compound, no fillers, 85mg magnesium per capsule
- Magnesium glycinate powder: weigh your own serving
- Magnesium + L-theanine capsules
- Magnesium and potassium citrate capsules 1000mg: two minerals, thirteen claims
- All magnesium supplements
Magnesium glycinate tablets 300mg: frequently asked questions
How much magnesium is in each tablet?
Each tablet contains 300mg of magnesium bisglycinate, which provides 43mg of elemental magnesium. The serving is two tablets: 600mg of magnesium bisglycinate providing 86mg of magnesium, 23% of the nutrient reference value (NRV) of 375mg.
Is 300mg the amount of magnesium?
No, and this matters. 300mg is the weight of the magnesium bisglycinate compound in each tablet. The magnesium itself is 43mg per tablet, 86mg per two-tablet serving. Any magnesium glycinate product that quotes the compound weight as if it were the elemental figure is overstating it by around seven times.
Why is 86mg a sensible serving?
Because the NRV is 375mg and a normal diet already supplies a good share of it. 86mg tops that up by 23% without approaching the 400mg-a-day supplementary level above which loose stools become likely. Because the serving delivers more than 15% of the NRV, every authorised magnesium claim applies.
What is magnesium bisglycinate?
Magnesium bonded to two molecules of the amino acid glycine, forming a chelate. Glycinate is chosen for gentleness on the stomach compared with oxide or citrate. Fully reacted bisglycinate is at most about 14% magnesium by weight; the 86mg-from-600mg figure on this product works out at 14.3%, which is what a genuine bisglycinate delivers.
Is this a buffered magnesium glycinate?
The elemental figure is the test. A buffered glycinate, which is glycinate blended with magnesium oxide, typically runs at 18% to 20% magnesium or more. This product's 14.3% is what you get from magnesium bound to two glycines with no oxide added. We declare the elemental figure so you can do that arithmetic yourself.
Why tablets rather than capsules?
Tablets hold more active per unit and cost less per serving, which is why this is the size for households and long-term use. Tablets need binders to hold together; the excipients are declared on the label. If you want the same compound with nothing else in it, our magnesium glycinate capsules are the no-filler option.
When should I take the tablets?
Two tablets a day, with food, at whatever time suits you. Many people take them with the evening meal. Take them at least two hours apart from iron, zinc or calcium supplements and from certain antibiotics (see the medication box).
Can I take just one tablet?
Yes. One tablet provides 43mg of magnesium, 11% of the NRV. The claims on this page are written for the two-tablet serving, which is the amount that comfortably clears the 15% threshold.
Does magnesium help with sleep, anxiety or cramp?
No such claims are authorised in Great Britain, so this page does not make them. The ten claims listed are the ones the register allows, and they are the only ones we use. Muscle cramp in particular has been assessed and rejected as a magnesium claim.
Who should check with a GP before taking magnesium?
Anyone with reduced kidney function, since the kidneys clear excess magnesium; anyone taking antibiotics of the tetracycline or quinolone type, bisphosphonates, or diuretics; anyone pregnant or breastfeeding; and anyone on regular medication. Not suitable for under 18s without advice.
Is it vegan?
Magnesium bisglycinate is mineral plus glycine and contains no animal material. Tablet excipients are declared on the label; if a vegan certification matters to you, the capsules are HPMC and contain nothing but the glycinate.
How many tablets do I get and how long do they last?
120, 200, 300, 500 and 1,000 tablets, plus 25,000 for trade. At two a day that is 60, 100, 150, 250 and 500 days.
Are these made in the UK?
They are packed and dispatched from our own unit in Southend-on-Sea, Essex, which holds a 5 Star Food Hygiene Rating. Charge Products has supplied magnesium since 2016 with 164,000+ verified marketplace sales.
What is the difference between this and your magnesium glycinate capsules?
Same compound, different format. The capsules are 650mg of magnesium bisglycinate providing 85mg of magnesium per capsule, in a vegan shell with no fillers, two a day. The tablets are 300mg providing 43mg each, two a day for 86mg, at a lower cost per serving. Choose capsules for no excipients, tablets for value.
About Charge Products
UK supplement and ingredient supplier since 2016, based in Southend-on-Sea, Essex. We declare elemental figures, use only the health claims the Great Britain register allows, and explain each one in plain English without adding to it.
164,000+ verified sales
Across our marketplaces, 99.7% positive on eBay.
5 Star Food Hygiene Rating
Awarded by Southend-on-Sea City Council under the FSA scheme.
Wholesale and trade
Bulk, white label and trade packs across the range.
References
Educational context only. The only claims made are the authorised magnesium claims.
1. EFSA Panel on Dietetic Products, Nutrition and Allergies. Scientific Opinion on the substantiation of health claims related to magnesium. EFSA Journal. 2009;7(9):1216 and 2010;8(10):1807. The assessments behind the ten authorised magnesium claims. doi.org/10.2903/j.efsa.2010.1807
2. Department of Health and Social Care / Food Standards Agency. Great Britain nutrition and health claims (NHC) register. gov.uk NHC register
3. NHS. Vitamins and minerals: others, including magnesium. Guidance on intake and the 400mg-a-day supplementary level. nhs.uk
Disclaimer: Food supplement, not a medicine. Not intended to diagnose, treat, cure or prevent any disease. Health claims are the authorised Great Britain magnesium claims in approved wording and apply at the two-tablet serving (86mg magnesium, 23% NRV). Each tablet contains 300mg magnesium bisglycinate providing 43mg magnesium. Not suitable for under 18s. Consult your GP if pregnant, breastfeeding, taking medication or managing a diagnosed condition, and before use if you have reduced kidney function. Do not exceed two tablets a day. Food supplements should not be used as a substitute for a varied, balanced diet and a healthy lifestyle. Keep out of reach of children. Charge Products is a trading name of Big Idea Services Ltd, Company No. 11645389, Unit 1, 8 Towerfield Road, Towerfield Industrial Estate, Southend-on-Sea, Essex SS3 9QE.
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