Magnesium L-Threonate
How these lines are chosen
Among 7 products and 7 retailer listings we track; Amazon and Walmart are not included. A month is thirty doses of the size in the heading, priced the same way as the per-dose figure beside it. “Delivery known” ranks only products whose retailer publishes a delivery rate; a cheaper product with an unpublished rate is on its own line, or in the full list below. No product here publishes a delivery rate below its free-delivery threshold, so the pick is priced before delivery.
Why this pick, and what's cheaper
Not a score, no weightings to argue with. It is the cheapest certified option, at this exact package where the certifier names packages, with no recall, warning letter or failed test in the sources we checked, a price its retailer let us read within its cache limit, and no more than a year's supply at the label's serving, priced before delivery: no certified product here publishes a delivery rate below its free-delivery threshold, so what you pay depends on your cart. It is provisional: it is the best answer within the products, retailers and sources we have actually checked, and that universe is still narrow.
The panels here state a compound weight many times the magnesium it carries, which is why it prices high per dose. What that buys is the question the note on it takes up.
Prices checked daily. Every figure links to its source. Where the data comes from
Of the 7 products here: 1 named at the exact package by a certifier, 6 in no database we searched.
| Product | Delivery | |||||
|---|---|---|---|---|---|---|
SR Sports Research MAG LT Magnesium L-Threonate with Magtein (180 veggie capsules) capsule · 144mg per serving · 4.17 per dose | $1.36 $40.94/mo | D · None located Could not locate independent data | $58.95 checked 3 days ago | free | 60 = 43 doses 43 days at 1/day | Buy Sports Research (direct) |
SR Sports Research MAG LT Magnesium L-Threonate with Magtein (90 veggie capsules) capsule · 144mg per serving · 4.17 per dose | $1.39 $41.60/mo | D · None located Could not locate independent data | $29.95 checked 3 days ago | $7.50 | 30 = 22 doses 22 days at 1/day | Buy Sports Research (direct) |
DWS Double Wood Supplements Magnesium L-Threonate, Magtein (120 capsules) capsule · 144mg per serving · 5.56 per dose | $1.43 $42.99/mo | D · None located Could not locate independent data | $30.95 checked today | free | 30 = 22 doses 22 days at 1/day | Buy Double Wood Supplements (direct) |
NUTR | $1.64 $49.29/mo + delivery | D · None located Could not locate independent data | $36.97 checked today | not free $22.03 short | 30 = 23 doses 23 days at 1/day | Buy Nutricost (direct) |
NUTR | $1.74 $52.05/mo + delivery | D · None located Could not locate independent data | $49.97 checked today | not free $9.03 short | 40 = 29 doses 29 days at 1/day | Buy Nutricost (direct) |
MEGA | $1.85 $55.54/mo + delivery | D · None located Could not locate independent data | $39.99 checked today | not free $10.01 short | 30 = 22 doses 22 days at 1/day | Buy MegaFood (direct) |
MOME | $2.30 $68.95/mo + delivery | A · NSF Certified for Sport Independently certified | $49.99 checked today | not free | 30 = 22 doses 22 days at 1/day | Buy Momentous (direct) |
Common questions
About these numbers
What “per dose” means here: 200mg elemental magnesium
The NIH fact sheet gives an adult RDA of 310-420 mg of magnesium, so 200 mg is a little under half of that. It is a round number chosen as a common denominator across salts that carry very different amounts of magnesium per gram. It is a unit of comparison, not a recommended intake.
Compared on elemental magnesium. Panels state it alongside the branded compound weight, e.g. 145 mg of magnesium from 2 g of Magtein.
Where the data comes from
- Where a label does not state servings per container, the figure is derived from net weight and the product page says so.
- Amazon and Walmart are not included, so “cheapest” means cheapest among the retailers we track.
- Prices go stale. Each one shows when it was last checked, and says so when it is older than the retailer allows us to cache it.
- iHerb prices cannot be refreshed automatically. iHerb has not given us access to its price data, so those prices are marked stale until they are re-read. Each retailer offer carries its own check date.
How we make money
No Buy button on this page earns us anything. The only links on the site that can are the Amazon links shown below the price comparison on some product pages, outside the comparison, and each says so beside it.
Commission will play no part in what we list, how it ranks, or which link we send you to. The Buy button points at the lowest price we have recorded even when that retailer pays us nothing.