Optimal formula of Magnesium L-Threonate (2000mg per serving).
For someone looking to improve cognitive function, sleep, emotions and reduce general tiredness*.
Benefits of L Cell Magnesium L-Threonate capsules with Magtein®*:
Brain & Cognitive. Contributes to normal cognitive function.
Mental Health. Contributes to normal psychological and nervous system functions.
Energy. Contributes to reduction of tiredness and normal energy-yielding metabolism.
Sport & Muscles. Contributes to normal muscle function.
Bones & Joints. Contributes to the maintenance of normal bones and teeth.
Longevity. Contributes to protection of DNA, proteins and lipids from oxidative damage3.
👨🔬 L Cell Scientist's Tips. L-Threonate is a specific form of Magnesium, capable of crossing the blood-brain barrier and providing cognitive benefits.
You can choose this product in capsule or powder form:
Product Information and Ingredients
- 120 capsules in the package, 450mg of Magnesium L-Threonate in each. - 30+ days of strong servings. - At least 7.2% concentration of Magnesium (tested and confirmed by accredited 3rd-party laboratory).
- Over 99.9% purity - no additives, fillers, heavy metals or other contaminants (tested and confirmed by accredited 3rd-party laboratory). - Synthesized in a pharma-grade laboratory. - Guaranteed active ingredients amount and safety: composition, heavy metals and mycotoxins are periodically tested in the laboratory. - Vegan friendly: capsule coating is produced from HPMC (hypromellose) instead of bovine gelatin. HPMC is a safe water soluble substance which easily disolves in the digestive tract. - No GMOs, artificial colors, preservatives, flavours or allergens.
**Magtein® is a trademark of and is licensed exclusively by ThreoTech LLC. Magtein® is protected under a family of US patents, pending patents, and is protected worldwide.
Keep in cool dark place, out of the reach of children.
This product is not intended to diagnose, treat, or cure any disease.
Shelf life: 24 months.
Country of origin: EU
Recommended Use
2 capsules during the breakfast meal, 2 capsules before bedtime. Swallow with water.
Laboratory reports & certificatesDelivery
Free UK delivery (Royal Mail 48 Tracked) on orders over £60!
Delivery price on orders under £60:
- Royal Mail 24 Tracked (1 working day) -£4.99
- Royal Mail 48 Tracked (up to 3 working days) - £3.99
All parcels are dispatched on working days at 6:00 PM. To ensure same-day dispatch, please place and pay for your order before 6:00 PM.
30 Days Money-Back Guarantee
Not satisfied with the product’s effect, taste or quality?
All L Cell products are covered by a 30-day money-back guarantee.
If you wish to return your purchase, please register and ship your return through the automated RoyalMail system:
2 capsules during the breakfast meal, 2 capsules before bedtime. Swallow with water.
EFFECT PEAK
2-4 weeks
SOURCE OF MATERIAL
Pure Magnesium L-Threonate synthesized in a pharma-grade laboratory
Featured in:
What is Magnesium L-Threonate?
Magnesium L-Threonate is a special form of magnesium that is known for its potential to support brain health and cognitive function.
Unlike other forms of magnesium, it is specifically designed to be more effectively absorbed by the brain.
It’s popular in longevity supplements because it may help support memory, learning, and overall mental clarity, making it a valuable addition for those looking to maintain cognitive health as they age.
How does Magnesium L-Threonate work?
Magnesium L-Threonate works by efficiently delivering magnesium to the brain, where it supports healthy brain function and cognitive performance.
Unlike other forms of magnesium, it can easily cross the brain's protective barrier, helping to maintain and enhance memory, focus, and mental clarity.
By boosting magnesium levels in the brain, this supplement supports overall cognitive health and can contribute to a more balanced and alert mind, which is especially beneficial as we age.
Customers praised this supplement for improved sleep, energy, memory, and mental clarity. Most noticed effects within 2-4 weeks. Reviews highlighted "better focus," "clearer thinking," and a "calmer mood." The capsules are easy to swallow. Fast delivery and quality packaging were consistently noted. All reviews were 5-star ratings with no negative feedback.
I've noticed clearer thinking, better focus, and a calmer mood throughout the day
My memory is more alert, my sleep has improved which has helped with not feeling tired
This supplement really helped my memory work effectively
Since taking I’ve noticed my memory is more alert also by taking two in the morning and then two in the evening my sleep has improved which has helped with not feeling tired during the day and can do more exercises 👍😀.Easy to swallow and delivery came quick.
A
Aiste
I use L Cell every day�
I use L Cell supplements daily for maximum effect.
D
Darius
Fast delivery good quality products
Fast delivery good quality products
A
Anonymous
I’m still in the process of trying your highly
I’m still in the process of trying your highly recommended medication So far so good
J
Jurate S.
I�m very happy with the vitamin Magnesium L-threonate
I�m very happy with the vitamin subscription service. It�s extremely convenient � you subscribe once and can relax knowing your vitamins will arrive on time every month. There�s no need to remember to reorder or worry about running out.
The quality of the products is excellent. Everything is well-packaged, clearly labeled, and delivered quickly and reliably. You can really feel the professionalism and attention to customer care.
I truly love this solution � it saves time, adds convenience, and makes it much easier to stay consistent with taking care of your health. Highly recommended!
G
Gerogia
Great supplement
This supplement really helped my memory work effectively. I recommend it to everyone, you won't regret buying it. You will feel the effect after about 2 weeks, and the best effect was felt for me after 1 month of use.
A
Alex
It took a long time to find a clean composition�
I've been looking for a clean supplement for a long time, and L Cell is the best I've found so far. I've ordered it more than once.
T
Thomas G.
Everything was fine.
Everything was fine.
I
Irina K.
Everything is great
Everything is great. The package was delivered on time. The products are of good quality. I am satisfied.
S
Saul M.
Very fast delivery
Very fast delivery, took me 2 working days from order, always a small present in :)
C
Christine
Useful product
Great product, I noticed positive changes after the first month.
E
Edward K.
Great supplements!
Great supplements!
P
Pauline S.
I ordered for the first time - everything is well�
I ordered for the first time- everything is well packaged. We will try NMN, Resveratrol and collagen. Thank you very much!
A
Ashley B.
The store is very convenient
The store is very convenient to choose and shop, fast delivery. And it's always so nice to receive a small gift__
1
12/10/2025
Magnesium L-Threonate has been a…
Magnesium L-Threonate has been a wonderful addition to my daily routine. I’ve noticed clearer thinking, better focus, and a calmer mood throughout the day. Unlike other forms of magnesium, this one truly supports my mind and helps me unwind in the evening without feeling drowsy. I feel more balanced, centered, and mentally sharp — it’s definitely worth it!
0
03/10/2025
Strongly recommend
The package and the delivery was excellent. I love their supplements and will be purchasing again for sure😊 recommend
2
24/08/2025
I’m very happy with L-cell
I’m very happy with L-cell. Recommended
2
23/08/2025
Super fast delivery and cute…
Super fast delivery and a cute sweet gift😍
2
21/08/2025
Good products, fast delivery.
Feel more energy, fast delivery.
2
20/08/2025
Fast
The order was delivered quickly. I was surprised by the packaging: the outside was simple, the inside smelled delicious and there was a small surprise inside.
0
05/08/2025
Great product, worth recommending.
I am glad that this particular form of Magnesium is on the market. I am using the second package and I am happy with the result, the feeling, and the effect.
1
19/07/2025
Magnesium
Fast delivery. Good quality supplements. Recommended.
1
10/07/2025
Fast delivery, quality products
Fast delivery, quality products
0
09/07/2025
High quality
High quality
0
03/07/2025
I have nothing to hold onto, I can only rejoice.
I have nothing to complain about: everything is great - from communication to delivery. It's nice to find a small surprise in the package. After a month of taking the supplements, the effect is noticeable. The skin is more beautiful, the quality of sleep has improved.
2
21/05/2025
Magnesium l-threonate
Magnesium l-threonate is great supplement. Thanks for fast delivery and cheapest price in my country.
1
14/05/2025
I want to sincerely thank you for the supplements…
I want to sincerely thank you for the fast and efficient delivery of my order. It was a pleasant surprise to receive the supplements so quickly. I’m especially happy with the high quality of both the Magnesium L-Threonate and the Resveratrol supplements. The Magnesium L-Threonate has been a great addition to my routine, and I’ve already noticed positive effects. The Resveratrol also feels like a premium product. I truly appreciate the excellent service and will definitely be ordering again!
1
12/05/2025
Fast delivery
Fast delivery, good quality products.
1
10/05/2025
Fast and convenient delivery
Fast and convenient delivery
Longevity is everywhere. Genuine products are rare.
Over 90% of food supplement brands simply resell products made elsewhere. At L Cell we control full path of our products as they are produced in our own GMP-certified lab in Europe.
Manufactured in Our Own Lab
Nowadays, "longevity" is everywhere. At L Cell we focus on the roots of Longevity science. Our supplements target particular molecular pathways in meaningful dosages.
Actual Longevity, Not a Buzzword
Studies show that about 50% of supplements on the market are mislabeled or polluted. We regularly test our products for concentration, heavy metals and contaminants in 3rd-party labs.
Guaranteed Composition
Tired of cheap plastic or excessive packaging? We’ve introduced Aluminium Tins to offer the best of all worlds: 1. Protection against contamination and UV. 2. 100% recyclability. 3. Low resources for production and transport.
Effectiveness of longevity supplements dramatically depends on correct usage method, dosage and synergy between each other.
Our products have been formulated in collaboration with nutritional experts of UCL (London) to ensure maximum anti-ageing elements absorption into cells.
What is Longevity and Healthy Ageing?
A 200-year-long lifespan – this is not just a slogan, but a realistic goal.
In 1961, American scientist Leonard Hayflick discovered that most human cells are capable of dividing up to 60 times during their lifetime before they die.
With each division, they mutate slightly and lose some of their original DNA epigenome information, making our bodies progressively older and more prone to disease.
Fortunately, scientific advances over the past 20 years have shown that there are ways to slow down – and even reverse – the degeneration process.
Frequently Asked Questions
What are side effects of Magnesium L-Threonate?
Magnesium L-Threonate is usually well-tolerated, but some individuals may experience mild side effects such as digestive upset or allergic reactions. Starting with a lower dose can help assess tolerance.
What to choose - powder or capsules?
Advantages of powder:
- Powder allows for precise dosage control, making adjustments easier.
- Powder is generally more cost-effective compared to capsules and can be mixed into various liquids for versatility.
Advantages of capsules:
- Convenience as they are easy to take and require no preparation.
- Capsules also mask the taste of powder, which can be beneficial for those sensitive to flavors.
- Capsules provide consistent intake with pre-measured doses.
Your decision should align with your preferences and lifestyle - opt for powder for cost-effectiveness and dosage control, or capsules for convenience and ease of use.
Can I take Magnesium L-Threonate if I'm already on medication?
Due to potential interactions, discuss Magnesium L-Threonate use with your doctor before starting it, especially if you take any medications. L-Threonate may influence how your body processes certain medications, potentially impacting their effectiveness.
How should I store the product?
Please store the product in a cool, dry place, away from direct sunlight. If you live in a very hot climate, please store the product in the refrigerator, otherwise it is not necessary.
Is Magnesium L-Threonate beneficial for cognitive function?
Yes, Magnesium L-Threonate is believed to support cognitive function by enhancing magnesium levels in the brain, which is important for learning, memory, and overall brain health. It may help improve memory and cognitive performance, especially in older adults. However, individual results can vary, so it's recommended to consult with a healthcare provider for personalized advice.
Still not sure where to start?
We know longevity science can be overwhelming.
That's why we've created a quiz to help you discover a personalized supplement routine.
