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Magnesium Glycinate
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Magnesium Glycinate is the form of magnesium bound to glycine — chosen for high bioavailability and low gastrointestinal disruption. Magnesium is one of the most extensively documented essential minerals in human nutrition, with multiple authorised health claims on the GB Nutrition and Health Claims Register. Two capsules deliver a clinically meaningful dose. From £6.99 per month — among the most affordable high-grade magnesium glycinate in the UK, designed by a practising NHS GP.
Doctor-designed by Dr Chun Tang — MBChB (Manchester), MRCGP, MBA
Practising NHS & private GP, 26 years of clinical experience. GP at Pall Mall Medical (CQC-registered), Manchester. As featured in The Telegraph, The Mirror, The Independent and Women's Health.
Magnesium Glycinate — The Most Bioavailable Form, Doctor-Designed
Magnesium is involved in over 300 enzymatic reactions in the human body. Public Health England's National Diet and Nutrition Survey data shows a substantial proportion of UK adults consume less magnesium than the Reference Nutrient Intake — particularly women and older adults.
The form of magnesium matters. Magnesium oxide — found in most cheap magnesium supplements — has poor bioavailability. Magnesium Glycinate bonds the mineral to glycine, an amino acid, producing a form with higher bioavailability and gentler digestive tolerance.
What Magnesium Contributes — Authorised UK Health Claims
Magnesium has the following authorised health claims on the GB Nutrition and Health Claims Register:
- Magnesium contributes to a reduction of tiredness and fatigue.
- Magnesium contributes to normal muscle function.
- Magnesium contributes to the normal functioning of the nervous system.
- Magnesium contributes to normal psychological function.
- Magnesium contributes to normal energy-yielding metabolism.
- Magnesium contributes to normal protein synthesis.
- Magnesium contributes to electrolyte balance.
- Magnesium contributes to the maintenance of normal bones and teeth.
- Magnesium has a role in the process of cell division.
Each of these claims is conditional on the supplement providing at least 15% of the Nutrient Reference Value per daily portion. Our two-capsule dose comfortably meets that threshold.
Why Glycinate Specifically
The amino acid glycine is bound to the magnesium ion in this formulation. Glycinate forms of magnesium are generally well-tolerated and absorbed; mechanism aside, this is the form most clinicians recommend when patients have struggled with magnesium oxide or citrate.
Suggested Use
2 capsules, 30–60 minutes before bed. Magnesium's authorised contributions to nervous system, psychological function and tiredness reduction are best realised through consistent daily intake rather than occasional use. Pair with NMN Pure or NMN Plus in the morning for our standard daily stack.
Year-Round Value
Magnesium's contributions are cumulative — consistent daily intake is what matters. Our Magnesium 12 Month Supply at £49.99 is the most cost-effective way to maintain daily supplementation without interruption.
💰 How does Little Ox compare on price? We cost from £7.99/month vs Charava £69.99, DoNotAge £35 and Longevity Formulas £20 — for the same high-quality, independently tested NMN at the same dose. See the full comparison →
🔬 Third-party tested, every batch. View our independent Certificates of Analysis and full manufacturing certifications. See our quality assurance page →
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Shipping & Returns
Shipping & Returns
Little Ox Supplements are shipped via RoyalMail Mail Tracked 48 to your home.
Orders may be cancelled at any time prior to shipment of the goods without incurring charges.
Refunds will be given at the discretion of LITTLE OX, but the general guidelines are as follows:
Any goods purchased by a customer of LITTLE OX which have been damaged in transit will be replaced free of charge.
Any undamaged goods will not be replaced unless there is a material fault with the contents.
If a return of goods and refund is requested for unused and undamaged goods, and the goods were originally shipped correctly and according to the customer’s original order, we may accept the request but there will be a 10% restocking fee to cover the administrative costs involved in processing the return. Refunds apply to the cost of goods only. Due to the limited shelf life of our products such goods will not be accepted for return and refund or replacement beyond 14 days after receipt of goods by the customer.
If it has been established by the customer, and accepted by us, that there is a material fault with the goods and a return and refund, or replacement, is requested, then this will be done with no charge to the customer.
Rejection of goods by Customs: If goods shipped to a foreign country are rejected by the Customs officials of that country and are returned to LITTLE OX, we will grant a refund for the purchase minus the cost of shipping incurred by LITTLE OX.
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Doctor Designed
By a practising NHS GP