Sports Research® Magnesium L-Threonate 2000mg w/Magtein®, Count may suit adults looking for the listed Magtein® formulation, but the 2,000 mg serving is not 2,000 mg of elemental magnesium: it provides mg elemental magnesium. The listing recommends three capsules daily with food, and the available information doesn’t include a price, so value per serving can’t be assessed.
- One serving contains 2,000 mg of magnesium L-threonate and mg of elemental magnesium.
- The serving size is three veggie capsules, with servings per container.
- The listed other ingredients are hypromellose veggie capsule, rice flour, and rice hulls.
- The adult direction is three veggie capsules daily with food, or as recommended by a qualified healthcare professional.
What is magnesium L-threonate, and how does Magtein® differ from other forms of magnesium?
The Amazon listing describes Magnesium L-Threonate as a salt formed from magnesium and threonic acid, which it says is derived from the metabolic breakdown of vitamin C. It also claims that this form crosses the blood-brain barrier; that is a listing claim, not a result independently verified in the information provided. The listing contrasts Magnesium L-Threonate with glycinate, citrate, and oxide on this point.
A separate source says Magnesium L-Threonate was identified during research screening compounds for their ability to raise brain magnesium levels. That source describes it as uniquely effective at penetrating the blood-brain barrier and increasing cerebrospinal fluid magnesium concentrations. It identifies Magtein® as a patented form developed at MIT and licensed exclusively by AIDP. These are source-reported accounts; the available claims don’t independently establish how this product performs in the body. The listing’s comparison supports a distinction in its description, not a broader conclusion that other forms cannot support magnesium intake.
Does Sports Research® Magnesium L-Threonate provide 2,000 mg of elemental magnesium?
No: one serving provides 2,000 mg of magnesium L-threonate and mg of elemental magnesium. Those figures describe different quantities, so the 2,000 mg figure shouldn’t be read as the amount of elemental magnesium. The Amazon listing also highlights the 2,000 mg/144 mg elemental-magnesium distinction.
That distinction matters when you’re comparing supplement labels or considering your total magnesium intake. The product’s headline amount refers to the magnesium L-Threonate compound, while the listed elemental amount is mg per serving. The listing’s highlight reinforces the same distinction rather than changing the serving’s elemental content. If you’re choosing a supplement based on elemental magnesium, use the mg figure for this serving, not the 2,000 mg compound weight. The provided information doesn’t give a comparison against other products’ elemental amounts, so it can’t establish how this serving ranks.
What ingredients, serving size, and number of servings are listed for Sports Research® Magnesium L-Threonate?
The listed serving size for Magnesium L-Threonate is three veggie capsules, and the container has servings. The other ingredients are hypromellose veggie capsule, rice flour, and rice hulls. The Amazon specification lists capsules, while its product description calls that amount a one-month supply.
The listing describes the product as vegan, gluten-free, and non-GMO. Those are listing attributes, not independently verified findings in the information available here. The three-capsule serving and servings per container are consistent with the stated 90-count quantity. If you’re checking the label for ingredients beyond the active compound, the available ingredient list names the capsule material, rice flour, and rice hulls; it doesn’t provide further detail about their amounts. The product page also identifies the item as capsules, but that doesn’t add a separate serving-size claim.
How should this supplement be taken, and is it best taken with food or at a particular time of day?
The listed adult direction for Magnesium L-Threonate is three veggie capsules daily with food, or as recommended by a qualified healthcare professional. A separate source says magnesium L-threonate can be taken with or without food. These statements differ in scope: the product direction specifies taking this supplement with food, while the source gives a general statement about the form.
The source also reports a clinically studied daily dose of 1,500–2,000 mg of Magtein®, divided into two or three doses. That reported dose is not the product’s listed direction; follow the product’s three-capsule direction unless a qualified healthcare professional recommends otherwise. The available claims don’t specify a best time of day, so there’s no supported basis here to recommend morning, evening, or another schedule. If you’re unsure how the label direction applies to you, the listing itself points to a qualified healthcare professional.
How long does Magtein® typically take to produce noticeable effects on sleep or cognitive function?
The available source recommends allowing six to eight weeks of consistent daily Magnesium L-Threonate use before expecting cognitive effects. That is a source recommendation, not a guarantee that you’ll notice a change after that period. It also doesn’t establish a general timeframe for sleep effects.
The distinction matters because the product listing makes broad claims about brain-health support, but those claims don’t provide a reliable personal timetable for results. The available information doesn’t say how soon an individual might notice an effect, how large any change might be, or whether everyone will notice one. For sleep specifically, the source reports a trial finding over six weeks, but a study period isn’t the same as a promise about when an individual will feel an effect. Treat the six-to-eight-week recommendation as guidance attributed to the source, rather than a proven onset date for this product or a prediction of benefit.
What evidence supports magnesium L-threonate for sleep or nerve pain, and what benefits have been studied?
The available source reports that a trial found improved sleep-quality scores over six weeks compared with placebo for Magnesium L-Threonate. It also reports a double-blind, placebo-controlled trial in healthy adults, in which participants taking 2,000 mg/day of Magtein® had improvements in all five subcategories of a standardized memory test after days. These are findings as reported by the source; the available information doesn’t provide further trial details to assess them.
No claim provided here reports evidence about nerve pain, so this review can’t establish whether Magnesium L-Threonate helps with it. The Amazon listing separately says the product may support memory, focus, relaxation, mood, and cognition, and identifies cognitive health as a product benefit. Those broader listing claims should be distinguished from the specific sleep and memory outcomes reported above. The cited trial summaries do not establish every advertised benefit, or show that this particular product will produce the same outcomes for every user.
What side effects, medication interactions, or health conditions should be considered before taking magnesium L-threonate?
The product listing advises consulting a qualified healthcare professional before taking Magnesium L-Threonate, especially if you’re pregnant or nursing, have a diagnosed medical condition, or take prescription medication. It also says not to exceed the recommended daily intake. These are label cautions, not a complete account of every possible risk.
The available claims don’t specify particular side effects or medication interactions. That means the information here can’t identify a specific symptom to expect or confirm whether the supplement interacts with a particular medicine. If you take prescription medication or have a medical condition, the listing’s advice is to consult a qualified healthcare professional before use. The label direction also doesn’t support exceeding the recommended intake. For pregnancy or nursing, the same consultation advice applies. Because no detailed safety profile or interaction list is included in the supplied information, don’t treat its absence as evidence that no risks or interactions exist.
How much does Sports Research® Magnesium L-Threonate cost per serving compared with other magnesium L-threonate supplements?
No product price or competitor prices are available in the information provided, so the cost per serving and price comparisons for Magnesium L-Threonate can’t be calculated. The listed container has servings. If a product price becomes available, that serving count would be the quantity to use in a per-serving calculation.
The Amazon specification identifies a 90-count bottle, and the serving size is three capsules. The product description calls capsules a one-month supply. Those details establish quantity, not value: without a price, you can’t determine what each serving costs or compare it fairly with other magnesium L-threonate supplements. The supplied information also contains no competitor prices or matching serving details. A comparison would therefore be speculative. For now, the useful purchasing facts are the servings per container and the lack of available pricing information, rather than a cost ranking.
Pros and Cons
Pros
- The serving size and elemental-magnesium amount are stated clearly: 2,000 mg of magnesium L-threonate and mg elemental magnesium.
- The product lists servings per container and gives an adult daily direction.
- The listing describes the product as vegan, gluten-free, and non-GMO.
Cons
- No product price or competitor prices are provided, so value per serving can’t be assessed.
- The available claims don’t specify particular side effects or medication interactions.
- The available claims provide no evidence about whether the supplement helps nerve pain.
Final Verdict
Key Takeaways
- Use mg, not 2,000 mg, as the listed elemental-magnesium amount per serving.
- The serving is three veggie capsules, and the container lists servings.
- The product direction says to take three capsules daily with food.
- Price information isn’t available, so cost per serving and competitor comparisons can’t be established.
Frequently Asked Questions
Is magnesium L-threonate the same as magnesium?
No. The serving lists 2,000 mg of magnesium L-threonate but mg of elemental magnesium.
How long does it take for magtein to work?
A source recommends six to eight weeks of consistent daily use before expecting cognitive effects, but that isn’t a guarantee or a sleep-onset estimate.
Can magnesium L-threonate help with nerve pain?
The available claims provide no evidence about nerve pain, so they can’t establish whether magnesium L-threonate helps with it.
Does magnesium threonate help with sleep?
A source reports improved sleep-quality scores over six weeks compared with placebo in a trial, but that finding doesn’t guarantee an individual benefit.
