Best Magnesium Bisglycinate in the UK: 3 Options Compared
Our pick of the best magnesium bisglycinate in the UK, in three products. Three magnesium supplements compared by formula, elemental magnesium, current price, UK delivery, public testing details, and return terms.
The Best Supplements is a media outlet specializing in dietary supplements: we help consumers choose reliable brands through detailed reviews, rankings, and buying guides. After analyzing more than 100 supplement brands, our team updates this ranking every month to reflect how the market evolves. Our methodology is built on 7 key criteria*, designed to compare the quality, transparency, and real value of each brand.
Dead Sea Magnesium Glycinate - Based Supplements
A simple Chelamax magnesium glycinate capsule
Dead Sea Magnesium Glycinate from Based Supplements provides its magnesium in two vegetable capsules, without publishing the elemental amount. The formula uses the branded Chelamax bisglycinate form. Its strongest comparison points are a concise label and publicly referenced third-party testing. Shoppers should compare elemental magnesium per serving, not the larger weight of the chelated compound. The directions permit one or two servings daily, so supplement overlap and medication timing matter. Kidney disease, pregnancy, breastfeeding, or regular medication use calls for professional guidance before adding magnesium.
- Two-capsule serving of chelated magnesium bisglycinate.
- Chelamax magnesium bisglycinate form.
- Short, easy-to-read ingredient list.
- Public third-party quality documentation.
- Short label with a single active mineral.
- Twice-daily use may be unnecessary for some users.
- Magnesium can interact with several medicines.
- Bioaccessibility data do not guarantee individual absorption or results.
Magnesium Glycinate - Roundway Supplements
A high-dose, three-form magnesium capsule
Roundway Magnesium Glycinate 3-in-1 combines bisglycinate, citrate, and malate in a two-capsule serving. The key figure is 384 mg of elemental magnesium, not the larger combined weight of the source compounds. That dose provides a full 30 servings per bottle and may appeal to adults seeking a broad formula in vegan capsules. It also increases the importance of checking other magnesium products, digestive tolerance, kidney health, and medication timing. The product is made in the UK; US buyers should confirm delivery and final dollar cost before treating the listed pound price as directly comparable.
- Three magnesium source forms in one serving.
- 384 mg elemental magnesium is clearly stated.
- Vegan and vegetarian capsule format.
- Thirty full servings per bottle.
- UK manufacture under GMP standards.
- High supplemental magnesium amount may not suit every user.
- Citrate may cause digestive discomfort or diarrhea.
- US shipping and delivered cost require confirmation.
Oh!Mg - NMN Bio
Oh!Mg: key facts in brief
NMN Bio Oh!Mg is a melatonin-free evening blend with magnesium bisglycinate, lactate, and taurate, plus L-theanine, lemon balm, zinc, vitamin B6, and vitamin B5. The official direction is three capsules 30 to 60 minutes before bed. The page states 306.8 mg of total elemental magnesium per three-capsule serving. Kidney disease, sedatives, pregnancy, digestive sensitivity, and medicines that interact with magnesium require professional review. The official store price is $63.00 (£45.00) for one bottle, before subscriptions or shipping.
- Three named magnesium forms.
- Includes L-theanine and lemon balm.
- Melatonin-free evening formula.
- Clear three-capsule timing instruction.
- UK GMP and ISO 9001 facility positioning.
- Three capsules per night may be inconvenient.
- Contains microcrystalline cellulose as a bulking agent, so it is not an excipient-free formula.
- Potential medication timing, kidney, digestive, and sedation concerns at 306.8 mg of elemental magnesium.
Grass-Fed Beef Protein
Grass-Fed Beef Protein: key facts in brief
Grass-Fed Beef Protein in Original Flavour is APE Nutrition's unflavoured beef protein powder, a 1 kg bag holding 50 servings of 20 g. Each serving carries 19.07 g of protein and all nine essential amino acids, from one ingredient, with no dairy, soy or filler declared. The beef comes from grass fed regenerative farms and the powder is third party tested for pesticides and heavy metals. The bag is $74.24, falling to $66.83 with the code LEMEILLEURCOMPLEMENT, or $1.34 a serving. APE sells direct from the United Kingdom, so a US order ships tracked in 5 to 9 days.
- Provides 19.07 g of protein per 20 g serving.
- Single ingredient, free from dairy, soy and sweeteners.
- Fifty servings per bag at $1.34 with the code.
- Third party tested for pesticides and heavy metals.
- Sourced from grass fed regenerative cattle.
- Mild savoury beef taste that many buyers mask in a shake.
- Extraction method and amino acid figures are not published.
- Costs more than US whey once UK shipping is added.
Grass-Fed Beef Protein
Grass-Fed Beef Protein: key facts in brief
Grass-Fed Beef Protein in Original Flavour is APE Nutrition's unflavoured beef protein powder, a 1 kg bag holding 50 servings of 20 g. Each serving carries 19.07 g of protein and all nine essential amino acids, from one ingredient, with no dairy, soy or filler declared. The beef comes from grass fed regenerative farms and the powder is third party tested for pesticides and heavy metals. The bag is $74.24, falling to $66.83 with the code LEMEILLEURCOMPLEMENT, or $1.34 a serving. APE sells direct from the United Kingdom, so a US order ships tracked in 5 to 9 days.
- Provides 19.07 g of protein per 20 g serving.
- Single ingredient, free from dairy, soy and sweeteners.
- Fifty servings per bag at $1.34 with the code.
- Third party tested for pesticides and heavy metals.
- Sourced from grass fed regenerative cattle.
- Mild savoury beef taste that many buyers mask in a shake.
- Extraction method and amino acid figures are not published.
- Costs more than US whey once UK shipping is added.
Grass-Fed Beef Protein
Grass-Fed Beef Protein: key facts in brief
Grass-Fed Beef Protein in Original Flavour is APE Nutrition's unflavoured beef protein powder, a 1 kg bag holding 50 servings of 20 g. Each serving carries 19.07 g of protein and all nine essential amino acids, from one ingredient, with no dairy, soy or filler declared. The beef comes from grass fed regenerative farms and the powder is third party tested for pesticides and heavy metals. The bag is $74.24, falling to $66.83 with the code LEMEILLEURCOMPLEMENT, or $1.34 a serving. APE sells direct from the United Kingdom, so a US order ships tracked in 5 to 9 days.
- Provides 19.07 g of protein per 20 g serving.
- Single ingredient, free from dairy, soy and sweeteners.
- Fifty servings per bag at $1.34 with the code.
- Third party tested for pesticides and heavy metals.
- Sourced from grass fed regenerative cattle.
- Mild savoury beef taste that many buyers mask in a shake.
- Extraction method and amino acid figures are not published.
- Costs more than US whey once UK shipping is added.
Grass-Fed Beef Protein
Grass-Fed Beef Protein: key facts in brief
Grass-Fed Beef Protein in Original Flavour is APE Nutrition's unflavoured beef protein powder, a 1 kg bag holding 50 servings of 20 g. Each serving carries 19.07 g of protein and all nine essential amino acids, from one ingredient, with no dairy, soy or filler declared. The beef comes from grass fed regenerative farms and the powder is third party tested for pesticides and heavy metals. The bag is $74.24, falling to $66.83 with the code LEMEILLEURCOMPLEMENT, or $1.34 a serving. APE sells direct from the United Kingdom, so a US order ships tracked in 5 to 9 days.
- Provides 19.07 g of protein per 20 g serving.
- Single ingredient, free from dairy, soy and sweeteners.
- Fifty servings per bag at $1.34 with the code.
- Third party tested for pesticides and heavy metals.
- Sourced from grass fed regenerative cattle.
- Mild savoury beef taste that many buyers mask in a shake.
- Extraction method and amino acid figures are not published.
- Costs more than US whey once UK shipping is added.
Grass-Fed Beef Protein
Grass-Fed Beef Protein: key facts in brief
Grass-Fed Beef Protein in Original Flavour is APE Nutrition's unflavoured beef protein powder, a 1 kg bag holding 50 servings of 20 g. Each serving carries 19.07 g of protein and all nine essential amino acids, from one ingredient, with no dairy, soy or filler declared. The beef comes from grass fed regenerative farms and the powder is third party tested for pesticides and heavy metals. The bag is $74.24, falling to $66.83 with the code LEMEILLEURCOMPLEMENT, or $1.34 a serving. APE sells direct from the United Kingdom, so a US order ships tracked in 5 to 9 days.
- Provides 19.07 g of protein per 20 g serving.
- Single ingredient, free from dairy, soy and sweeteners.
- Fifty servings per bag at $1.34 with the code.
- Third party tested for pesticides and heavy metals.
- Sourced from grass fed regenerative cattle.
- Mild savoury beef taste that many buyers mask in a shake.
- Extraction method and amino acid figures are not published.
- Costs more than US whey once UK shipping is added.
We look at each brand's composition, dosages, active ingredients, and transparency.
We compare the real price based on dosage, quantity, and how long each product lasts.
We analyze customer feedback and overall satisfaction.
Exclusive discounts when a brand offers a partner deal.
The best magnesium bisglycinate in the UK: three products for three shoppers
The phrase best magnesium bisglycinate UK sounds specific, but the products behind it are not interchangeable. One option in this ranking is a focused magnesium bisglycinate formula imported from the United States. Another is a UK-made three-form magnesium complex. The third is an evening blend that combines three magnesium forms with amino acids, a botanical, vitamins, and zinc.
- Best match for a focused bisglycinate search: Based Dead Sea Magnesium Glycinate.
- Best UK value and simplest domestic delivery: Roundway Magnesium Glycinate 3-in-1.
- Best feature-rich evening formula: NMN Bio Oh!Mg.
We compared the current official formula, elemental-magnesium disclosure, suggested serving, one-time price, shipping route, return terms, and potential drawbacks. We did not personally test these supplements and did not use customer testimonials as evidence. Prices and offers were checked in September 2026 and can change.
1. Based Dead Sea Magnesium Glycinate
Based takes first place because it is the closest match to a shopper who specifically wants magnesium bisglycinate rather than a multi-form complex. The brand describes the ingredient as fully chelated magnesium bisglycinate made from a Dead Sea mineral source. The current product page recommends two capsules once or twice daily and lists a bottle as a 30-serving supply.
On TBS: Dead Sea Magnesium Glycinate product page, our full Based Supplements review, Based Supplements promo code.
The one-time price is currently $29.99. That is not a delivered UK price. Based is a US company, charges in dollars on the page we checked, and says international orders typically arrive in 7 to 14 days. Shipping is free only above $100, while duties and taxes may be paid at checkout where that option is available. A UK buyer should therefore compare the final converted total, not the bottle price alone.
Transparency is the strongest differentiator. Based publishes a magnesium section on its third-party testing page with reported limits for heavy metals and results for mycotoxins. The product page also points to structural testing used to support the chelation claim. A cautious buyer should still check whether a document identifies the exact finished-product lot being purchased and whether the date remains current.
The official returns page gives eligible UK customers 30 days after delivery to request a return for direct purchases. This option makes most sense for someone prioritizing a focused bisglycinate product and public test information over domestic convenience.
Main limitation: the official page does not present a clear UK price in pounds, and the final cost can include international shipping, currency conversion, and duties. It also instructs users to take two capsules one to two times daily, so the actual duration depends on the selected serving.
2. Roundway Magnesium Glycinate 3-in-1
Roundway is the easiest UK purchase in this group and the strongest value at the listed one-pack price. The formula combines magnesium bisglycinate, citrate, and malate rather than providing bisglycinate alone. Two capsules supply 1,000 mg magnesium bisglycinate, 400 mg magnesium citrate, and 400 mg magnesium malate as ingredient weights. The company separately states 384 mg of elemental magnesium per daily serving.
On TBS: Magnesium Glycinate product page, our full Roundway Supplements review, Roundway Supplements promo code.
That distinction matters. The weight of a magnesium compound is not the same as the amount of elemental magnesium it supplies. Roundway discloses both, which prevents shoppers from mistaking 1,800 mg of combined compounds for 1,800 mg of magnesium.
A single pack is currently £19.99 and covers 30 days at two capsules daily. Multi-pack prices reduce the advertised cost per pack, but promotional bundles and free-gift messages can change. The shipping policy lists Royal Mail Tracked 48 at £2.99 for UK orders and free shipping above £50. Another current terms page uses a different free-delivery threshold, so the cart should be treated as the final source for a live order.
Roundway advertises a 60-day money-back guarantee on the product page. Its formal refund policy also describes the UK cancellation window and says returned goods must be in the same condition, with customers responsible for return postage. Those conditions deserve more weight than a guarantee badge by itself.
Best fit: someone who wants a UK-made, vegan capsule, a published elemental amount, pound pricing, and uncomplicated domestic shipping. It ranks behind Based for this exact keyword because citrate and malate are substantial parts of the formula. People who specifically want bisglycinate only should not treat it as a single-form substitute.
3. NMN Bio Oh!Mg
Oh!Mg is the most specialized blend here. It is positioned for evening use and combines magnesium bisglycinate, lactate, and taurate with L-theanine, lemon balm extract, vitamin B6, vitamin B5, and zinc. The official page recommends three capsules 30 to 60 minutes before bed.
On TBS: Oh!Mg product page, our full NMN Bio review, NMN Bio promo code.
The published serving provides 240 mg from the bisglycinate entry, 38.4 mg from magnesium lactate, and 28.4 mg from magnesium taurate, with 306.8 mg total elemental magnesium. It also lists 50 mg L-theanine, 50 mg lemon balm, 5 mg vitamin B6, 2 mg vitamin B5, and 2 mg zinc. These details make it easier to compare the whole formula rather than focusing on the word magnesium.
The current product page lists pricing from £31.95, with tax included and shipping calculated at checkout. NMN Bio presents Oh!Mg as manufactured in the United Kingdom and says the finished formula is vegan. Because pricing varies by purchase option, shoppers should confirm the selected pack count and subscription setting before comparing monthly cost.
Best fit: someone deliberately looking for an evening multi-ingredient supplement. It is not the most direct answer to a search for plain magnesium bisglycinate. Added ingredients also create more reasons to check medication, pregnancy, allergy, and total daily nutrient intake with a qualified professional.
Main limitation: a broader formula makes it difficult to attribute any personal response to magnesium alone. Claims about calm, sleep quality, cortisol, or recovery on a seller page should not be treated as proof that the finished supplement will produce those outcomes for every user.
How we ranked magnesium bisglycinate options
1. Match with the search intent
A single-form bisglycinate product ranks higher for this query than a product that merely includes bisglycinate inside a broader blend. That does not make it universally better. It simply answers the specific search more directly.
2. Elemental magnesium disclosure
The useful comparison number is elemental magnesium per labeled serving. Compound weights can look much larger because they include the molecule bound to magnesium. If the elemental amount is missing or ambiguous, ask the manufacturer before calculating value.
3. Real UK purchase cost
For a domestic brand, add the bottle and UK delivery. For an imported product, also consider exchange rates, card fees, duties, taxes, and the practical cost of returning it. A lower headline price can become the more expensive delivered option.
4. Formula complexity
Some shoppers want a narrow ingredient list so they can adjust one variable. Others value a blend that combines different forms or evening ingredients. We treat this as a use-case decision, not proof of superior effectiveness.
5. Public quality information
Useful evidence identifies the tested material, lot or batch, date, laboratory, methods, analytes, units, and acceptance limits. A general phrase such as third-party tested is less informative than a current document that a customer can match to the bottle.
Magnesium glycinate and bisglycinate: is there a difference?
The names are often used interchangeably in consumer supplements. Bisglycinate describes magnesium chelated to two glycine molecules, while glycinate is frequently used as a shorter commercial label for the same type of ingredient. The front label alone may not reveal whether the material is fully reacted, buffered with another magnesium form, or part of a blend.
Read the supplement facts and ingredient list together. If a page advertises a large amount of magnesium glycinate but does not state elemental magnesium, the large number cannot be compared directly with a product that reports elemental milligrams.
Which formula is best for sleep?
Magnesium contributes to normal nervous-system and muscle function, but a supplement is not a guaranteed sleep treatment. Oh!Mg is the only option here deliberately built as a multi-ingredient evening formula. Based is a focused bisglycinate product, while Roundway combines bisglycinate with citrate and malate.
The right choice depends on the ingredient list, dose, tolerability, and whether added L-theanine, lemon balm, vitamins, or zinc are wanted. Persistent insomnia, severe fatigue, or suspected deficiency deserves medical assessment rather than trial-and-error supplementation.
Safety and dosing checks before buying
Follow the purchased label and avoid combining several magnesium products without calculating the total supplemental amount. Magnesium supplements can cause diarrhea, nausea, or abdominal discomfort, especially at higher intakes or with certain forms. Kidney disease can change the body's ability to clear magnesium.
Magnesium may also interfere with the absorption of some medicines, including certain antibiotics and osteoporosis treatments, when taken too close together. Pregnant or breastfeeding people, children, anyone with kidney problems, and people taking prescription medication should seek individualized advice from a doctor or pharmacist.
None of these products should be described as a treatment for insomnia, anxiety, depression, cramps, migraines, heart disease, or magnesium deficiency without appropriate clinical evaluation.
Bottom line for UK buyers
Based ranks first for a focused magnesium bisglycinate formula and accessible test information, but UK shoppers must accept dollar pricing and international delivery. Roundway is the practical UK value pick, with £19.99 pricing, domestic fulfillment, and a clearly stated elemental amount, although it includes citrate and malate. Oh!Mg is the feature-rich evening option, not a plain bisglycinate capsule.
Choose by formula before choosing by marketing. Then compare elemental magnesium, daily serving, delivered UK cost, and return conditions. Recheck every detail at checkout because price, shipping thresholds, subscriptions, and promotions change more quickly than the core formula.
Official sources checked
Frequently asked questions❓
The 6 questions consumers ask most:
Based is our first pick for a focused bisglycinate formula and public testing information. Roundway is the better domestic-value option, while Oh!Mg is designed as a broader evening blend.
The names are often used interchangeably, but buyers should check whether the ingredient is fully chelated, buffered with another form, or included in a multi-form blend.
Roundway states 384 mg per two-capsule serving, and Oh!Mg states 306.8 mg per three-capsule serving. The Based page we checked does not clearly state an elemental amount in its page text, so buyers should confirm it on the current bottle label rather than infer it.
Roundway and NMN Bio describe their products as UK manufactured. Based is a US brand that offers international shipping to most major countries, including a return policy that names the UK.
No. Magnesium is an essential nutrient, but these supplements are not proven cures for insomnia. Persistent sleep problems should be discussed with a qualified healthcare professional.
Compare elemental magnesium per serving, other active ingredients, daily capsule count, total delivered cost, subscription settings, public quality documents, and the detailed return policy.
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