Core Longevity's Top 3 Magnesium Bisglycinate Supplements
At Core Longevity, we carefully selected three of the best magnesium bisglycinate products available in the UK, focusing on the principles that matter most to us: Quality, Purity and Purpose.
When comparing magnesium supplements, we look beyond the amount of magnesium bisglycinate listed on the front of the packaging. We consider the amount of elemental magnesium provided per serving, the form and source of the magnesium, and whether the product uses a straightforward formulation without unnecessary fillers, artificial additives or ingredients that do not serve a clear purpose.
We also consider ingredient transparency, manufacturing and quality standards, value for money and the overall formulation. While no single supplement will be the right choice for everyone, we believe these three products represent some of the strongest options for those specifically looking for magnesium bisglycinate.
Our reviews are independent and based on the formulation, ingredients, quality, value and purpose of each product—not simply brand popularity or marketing claims.
Simply select the product button below to explore our Top 3 magnesium bisglycinate products and discover their individual Core Longevity Ratings.
TIME HEALTH MAGNESIUM BISGLYCINATE
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At Core Longevity, we chose Time Health Magnesium Bisglycinate as one of our Top 3 because it strongly reflects the principles we look for in a supplement: Quality, Purity and Purpose.
What makes this product stand out is its use of NovoMin® magnesium bisglycinate, a fully reacted chelated form of magnesium. Time Health states that a full daily serving provides 379mg of elemental magnesium, making this a relatively high-dose magnesium bisglycinate option. The formulation is also straightforward, with no synthetic bulking agents or anti-caking agents listed. The capsules are vegan, and the product is manufactured to GMP standards.
Compared with many magnesium supplements, Time Health takes a relatively simple approach, focusing on a single form of magnesium rather than combining several different forms or adding unnecessary ingredients. The use of a branded raw material also provides additional information about the source and specification of the magnesium used.
For Core Longevity, the combination of magnesium bisglycinate, a clearly stated elemental magnesium content and a straightforward formulation is what earns Time Health its place in our Top 3.
Its relatively high daily dose is worth considering when comparing products, as individual magnesium requirements and suitable supplemental intake can vary. As with any supplement, more is not automatically better.
Core Longevity Rating
Purity: ★★★★★ 9.5/10
Clean Formula: ★★★★★ 9.5/10
Price & Value: ★★★★½ 9/10
Verified Quality: ★★★★★ 9.5/10
Purpose: ★★★★★ 10/10
Overall: ★★★★★ 9.5/10
Core Longevity Verdict:
An exceptionally straightforward magnesium bisglycinate that strongly reflects the Core Longevity principles of Quality, Purity and Purpose. Its clearly stated elemental magnesium content, chelated bisglycinate form and simple formulation make it a strong choice for those looking for a high-dose magnesium supplement without unnecessary fillers or additives. Its focus on simplicity and transparency makes it an excellent fit for the Core Longevity Top 3.
BRITISH SUPPLEMENTS CLEAN MAGNESIUM GLYCINATE
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At Core Longevity, we chose British Supplements Clean Genuine Magnesium Glycinate as one of our Top 3 because of its strong focus on ingredient purity, transparency and avoiding unnecessary extras.
The product uses chelated magnesium glycinate, also known as magnesium bisglycinate, providing 167mg of elemental magnesium per daily two-capsule serving. British Supplements states that its products are manufactured in the UK and formulated without fillers, binders, bulking agents or artificial additives.
What makes this product slightly different is its formulation. Alongside magnesium glycinate, it contains a small uptake blend featuring black pepper, ginger and cumin extracts. This makes the formula more complex than a completely single-ingredient magnesium supplement, but the overall ingredient list remains relatively straightforward and clearly disclosed.
For Core Longevity, British Supplements earns its place in our Top 3 because of its focus on quality, purity and transparency, as well as its use of a chelated magnesium form and its commitment to avoiding unnecessary fillers.
It may not provide the highest amount of elemental magnesium in our Top 3, but for those who prioritise a UK-manufactured product with a clean and clearly disclosed formulation, it remains a strong option.
Core Longevity Rating
Purity: ★★★★★ 9.5/10
Clean Formula: ★★★★★ 9.5/10
Price & Value: ★★★★★ 9.5/10
Verified Quality: ★★★★½ 9/10
Purpose: ★★★★★ 9.5/10
Overall: ★★★★★ 9.3/10
Core Longevity Verdict:
A clean and well-formulated magnesium bisglycinate that strongly reflects the Core Longevity principles of Quality, Purity and Purpose. We particularly value the absence of unnecessary fillers and binders, its transparent ingredient list and UK manufacturing. The addition of black pepper, ginger and cumin makes the formulation slightly more complex than a single-ingredient magnesium product, while its 167mg elemental magnesium dose is lower than some alternatives. Nevertheless, its focus on clean ingredients, transparency and straightforward formulation makes it an excellent choice for those who value simplicity.
VIRIDIAN HIGH POTENCY MAGNESIUM BISGLYCINATE
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At Core Longevity, we chose Viridian High Potency Magnesium Bisglycinate as one of our Top 3 because of its strong focus on Quality, Purity and Purpose, combined with an exceptionally simple formulation.
What makes Viridian stand out is its use of fully reacted magnesium bisglycinate, with the magnesium bound to glycine. Each two-capsule serving provides 200mg of elemental magnesium, with the capsule itself being the only other listed ingredient.
This simplicity is one of the main reasons it aligns so closely with the Core Longevity principles. There are no unnecessary fillers, artificial additives or multiple forms of magnesium added to the formulation. Instead, Viridian focuses on providing one clearly identified form of magnesium in a straightforward and transparent product.
Viridian also stands out for its emphasis on a fully reacted bisglycinate, which is an important distinction to consider when comparing products marketed as magnesium glycinate or bisglycinate. For us, the combination of a clearly identified magnesium form, 200mg of elemental magnesium and an exceptionally short ingredient list makes this a particularly strong option.
For Core Longevity, Viridian earns its place in our Top 3 because it demonstrates exactly what we look for in a supplement: a clear purpose, transparent ingredients and nothing unnecessary.
magnesium dose and an exceptionally short ingredient list earns Viridian its place in our Core Longevity Top 3.
Core Longevity Rating
Purity: ★★★★★ 10/10
Clean Formula: ★★★★★ 10/10
Price & Value: ★★★★½ 9/10
Verified Quality: ★★★★★ 9.5/10
Purpose: ★★★★★ 10/10
Overall: ★★★★★ 9.7/10
Core Longevity Verdict:
An exceptionally pure magnesium bisglycinate with one of the cleanest formulations in our Top 3. Viridian uses 100% pure, fully reacted magnesium bisglycinate, with no other forms of magnesium, unnecessary fillers or artificial additives. With 200mg of elemental magnesium per two-capsule serving, it provides a meaningful amount while remaining simple and purposeful. Its premium price is the only factor preventing a perfect score.
Important Information & Disclosure
Medical Disclaimer
The information provided on Core Longevity is for general educational and informational purposes only and should not be considered medical advice. Supplements are not intended to diagnose, treat, cure or prevent any disease. Always speak with a qualified healthcare professional before starting a new supplement, particularly if you are pregnant, breastfeeding, taking medication or have an existing medical condition.
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Some links on Core Longevity may, in the future, be affiliate links. This means that if you choose to purchase a product through one of these links, Core Longevity may earn a small commission at no additional cost to you. Our reviews and product selections are based on our independent assessment of Quality, Purity and Purpose, not simply on whether a company offers an affiliate programme.
We believe in being transparent with our readers and will always disclose affiliate relationships where they exist.