NOW Foods Magtein Magnesium L-Threonate

Name: NOW Foods Magtein Magnesium L-Threonate
Brand: NOW Foods
SKU: 733739023902
Price: 37.85 GBP
Availability: InStock

Brands: NOW Foods

£37.85

Supplemental magnesium from NOW Foods — 90 vcaps per pack, no fuss.

Why people take it

Magnesium contributes to normal muscle function
Magnesium contributes to the reduction of tiredness and fatigue
Magnesium contributes to the normal function of the nervous system
Magnesium contributes to electrolyte balance

How to use

Take as directed on the pack, ideally with food and at the same time each day.

Good to know

Format: vcaps
Caffeine free
Vegetarian-friendly capsule shell

A food supplement, not a substitute for a varied diet and healthy lifestyle. Do not exceed the stated dose. Keep out of reach of children.

Quantity

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Categories : Caffeine-Free Supplements, Everyday Health Supplements, Magnesium Supplements, NOW Foods, Vegetarian Supplements, Vitamins & Supplements

SKU: 733739023902

At a glance

£1.26

per daily dose

Limited

evidence for magnesium l-threonate (magtein)

Our honest take

Magtein (magnesium L-threonate), the form marketed for the brain. Three capsules give 2,000 mg of Magtein but only 144 mg of actual magnesium (38% NRV). The human evidence for memory or brain benefits is limited to a few small trials, and those claims are not authorised. At well over £1 a day it costs many times more than citrate or glycinate for the same magnesium; buy it only if you specifically want to try this form.

You specifically want to try magnesium L-threonate and accept the evidence is early
You want a moderate, vegan magnesium dose split across the day
You just want to top up magnesium: citrate or glycinate gives more for far less money
You are looking for a proven memory or focus supplement: there isn't good evidence for this one
You have kidney disease or take antibiotics or bisphosphonates: check with your GP or pharmacist first

The science

Magnesium L-threonate (Magtein)· evidence: Limited

Magnesium L-threonate, sold under the trade name Magtein, is magnesium bound to threonic acid. It is marketed for the brain because animal studies suggested it raises magnesium levels in the brain more than other forms. In people, the evidence is a handful of small trials, several funded by the ingredient's maker, so it is far from settled. Claims about memory, focus, brain health or sleep are not authorised.

It is also a low-strength way to get magnesium: 2,000 mg of Magtein provides only about 144 mg of elemental magnesium (38% NRV), at several times the price of citrate or glycinate. If you simply want to top up your magnesium intake, other forms are much better value.

Authorised health claim
Magnesium contributes to a reduction of tiredness and fatigue.
Magnesium contributes to electrolyte balance.
Magnesium contributes to normal energy-yielding metabolism.
Magnesium contributes to normal functioning of the nervous system.
Magnesium contributes to normal muscle function.
Magnesium contributes to normal protein synthesis.
Magnesium contributes to normal psychological function.
Magnesium contributes to the maintenance of normal bones.
Magnesium contributes to the maintenance of normal teeth.
Magnesium has a role in the process of cell division.

These claims apply only where the daily dose provides at least 15% of the NRV (56 mg of magnesium).

Typical dose: Trials have used about 1.5–2 g of magnesium L-threonate a day, giving roughly 100–144 mg of elemental magnesium.

Safety: Generally well tolerated; some people report headaches or drowsiness. Keep total magnesium from supplements within the EFSA upper level of 250 mg a day unless advised otherwise. Take apart from tetracycline or quinolone antibiotics and bisphosphonates. Speak to your GP first if you have kidney disease.

Research we looked at:
Slutsky I et al. (2010). Enhancement of learning and memory by elevating brain magnesium. Neuron 65(2):165–177.
Liu G et al. (2016). Efficacy and safety of MMFS-01, a synapse density enhancer, for treating cognitive impairment in older adults. J Alzheimers Dis 49(4):971–990.
EFSA NDA Panel (2015). Scientific opinion on dietary reference values for magnesium. EFSA Journal 13(7):4186.

Ingredients & nutrition

Ingredients: Magtein magnesium L-threonate, hypromellose capsule, rice flour, stearic acid, silicon dioxide.

Per daily dose (3 capsules): magnesium L-threonate 2,000 mg, providing magnesium 144 mg (38% NRV).

Pack: 90 veg capsules, 30 daily doses. Vegan.

Always check the pack you receive, as manufacturers sometimes update recipes.

How to use

Take 3 capsules a day; the brand suggests 1 in the morning and 2 later in the day. Do not exceed the stated daily dose.

Price per dose & how it compares

Product	Size	Price	Per daily dose
This product	90 vcaps	£37.85	£1.26
Osavi Magtein Magnesium L-Threonate		from £39.69	£1.23
Skill Nutrition Magtein Magnesium L-Threonate		from £45.99	–
NOW Foods Magnesium Citrate		from £10.07	£0.13

Cost per daily dose lets you compare packs of different sizes fairly.Worked out from our current prices.

Food supplements should not replace a varied, balanced diet and healthy lifestyle. General information, not medical advice. Speak to your GP or pharmacist first if you are pregnant or breastfeeding, have a medical condition or take medication.