

🧩 Upgrade your brain game — because your mind deserves the best!
Sports Research Magtein Magnesium L-Threonate Capsules deliver 2000mg of a patented, highly bioavailable magnesium compound clinically shown to cross the blood-brain barrier, enhancing memory, focus, sleep quality, and mood. Made in the USA with non-GMO, gluten-free ingredients, this 90-capsule supply offers a convenient daily dose to support cognitive health and overall brain function.





| ASIN | B0B336FCWC |
| ASIN | B0B336FCWC |
| Best Sellers Rank | #1,920 in Health ( See Top 100 in Health ) #61 in Mineral Supplements |
| Brand | Sports Research |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,604) |
| Customer reviews | 4.7 4.7 out of 5 stars (1,604) |
| Date First Available | 25 July 2023 |
| Format | Capsule |
| Item model number | FG377 |
| Manufacturer | Sports Research |
| Product Dimensions | 6.22 x 6.22 x 11.43 cm; 2 g |
| Serving Recommendation | One Capsule |
| Units | 1.00 Count |
E**H
Magtein at the best price and it works well. Love the flip top bottle. Just an all around great staple supplement and brand.
N**R
I’ve been taking these Sports Research Magnesium L-Threonate capsules for about 4 months now, and they are honestly amazing. I originally bought them to help with sleep, and they’ve made a huge difference — I fall asleep easier, stay asleep longer, and wake up feeling more rested instead of groggy. What I didn’t expect was how much they would also improve my mood. Since taking these consistently, I feel calmer, more balanced, and less stressed throughout the day. It really feels like my brain and body just function better on this form of magnesium. This formula absorbs well, doesn’t upset my stomach, and the capsules are easy to take. I’ve tried other types of magnesium, but none of them have worked nearly as well as Magtein. If you’re looking for something to support sleep, focus, or mood, I highly recommend giving these a try. They’ve made a noticeable difference for me, and I’ll definitely keep taking them!
R**Y
Very relaxing and calmed the anxiety that came with peri-menopause, I use the Magnesium Glycinate and the L-Threonate together at bedtime and it’s made a huge difference in mood and sleep!! I love that Sports Research is such a clean brand!!!
Q**Y
Been combining a serving of this with 200 mg L-theanine an hour before bed and I've been sleeping much better since starting this combination. Seems to be a good product, and works well for me. I would say I typically have insomnia 1-2 days per week, and I haven't had any issues with it since starting this and L-theanine.
B**N
Great brand, high quality. Helps with sleep!
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