

🧠 Elevate your mind, rest your body, own your day.
Sports Research Magnesium L-Threonate Capsules deliver 2000mg of highly bioavailable Magtein®, a patented form of magnesium proven to cross the blood-brain barrier. Designed to enhance brain health, memory, focus, and promote restful sleep, this vegan, non-GMO, and gluten-free supplement is manufactured in the USA under strict quality standards. With 90 capsules per bottle, it offers a convenient one-month supply to support cognitive function and overall wellness.



















| ASIN | B0B336FCWC |
| Age Range Description | Adult |
| Allergen Information | Gluten Free |
| Best Sellers Rank | #1,555 in Health & Household ( See Top 100 in Health & Household ) #36 in Magnesium Mineral Supplements |
| Brand | Sports Research |
| Brand Name | Sports Research |
| Customer Reviews | 4.7 out of 5 stars 1,892 Reviews |
| Diet Type | Gluten Free |
| Flavor | Unflavored |
| Item Form | Capsule |
| Item Volume | 800 Milliliters |
| Item Weight | 2000 Milligrams |
| Manufacturer | Sports Research |
| Material Type Free | GMO Free, Gluten Free, Vegan Friendly |
| Number of Items | 1 |
| Primary Supplement Type | Made with Magtein |
| Product Benefits | Brain Health, Memory Health, Sleep Support |
| UPC | 023249091516 |
| Unit Count | 90.0 Count |
Q**Y
Working Well for Better Sleep
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.
S**M
Love this brand.
Love this brand- very reputable. You’ll live it too. Excellent product. Easy to use. Good quality. Exactly as seen on photos. I highly recommend. Great value
N**R
Life-Changing Magnesium — Better Sleep & Better Mood!
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!
J**B
Knocks me out fast — just don’t mix with wine
This magnesium L-threonate works extremely well for me. Within about 20 minutes of taking it, I feel super relaxed and sleepy, and I sleep incredibly well through the night. It’s one of the best sleep supplements I’ve tried. One thing I did notice is that if I have wine or alcohol the same evening, my sleep becomes much lighter and not nearly as restful, even when I take this. On nights without alcohol, the sleep quality is deep and very refreshing. The capsules are easy to swallow. It says take 3 but I take 2. If you’re looking for something to help you fall asleep quickly and get truly restful sleep, this has been excellent!
M**R
Easy to take, quality product
Decent price, easy to swallow. No complaints.
K**W
Happy with the cognitive effects
I'm a woman in my early 50's. I started taking this in hopes of helping my cognitive function. I do feel like it has helped my clarity and memory. Not sure that it has had any effect on my mood or sleep quality, but my primary focus was the cognitive portion, which I am happy with. I would recommend giving it a try. The price is quite steep, so I will only buy it when it's on a decent sale, otherwise it's too expensive for me. Function wise I give it a 5, but I had to subtract a star because of the steep price.
T**E
Works great
Love this product, I have had more energy and I don't feel like I have brain fog, I'm also starting to get better sleep
L**J
Good quality supplement
I like the quality and research behind this brand. This supplement is good quality and potent when taken at the recommended dose.
Trustpilot
2 months ago
1 month ago