Sports Research® Magnesium L-Threonate Capsules 2000mg - High-Absorption Magtein® for Enhanced Brain Health, Memory, Focus & Restful Sleep Support - Vegan · Non-GMO · Gluten Free - 90 Count

I’ve noticed a real lift in clarity and day‑to‑day focus with these Magnesium L‑Threonate capsules. They’re easy to take, well‑formulated, and have earned a steady place in my routine. Everyone responds differently, but this has supported my mental sharpness in a meaningful way.

Great brand, high quality. Helps with 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.

I like the quality and research behind this brand. This supplement is good quality and potent when taken at the recommended dose.

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!

Overall I'd say it's good, but it doesn't make me sleepy or tired. It feels like my sleep is lighter, and according to my Fitbit my sleep quality is lower when I take this right before bed. But maybe I need to take more than a single dose? 🤷 Really if your goal is to restore your magnesium stores this seems like a good supplement with few drawbacks. No laxative side effects. Seems to reduce muscle tension caused by vit d supplementation. The main downside is the capsules are huge and a single dose is 3x of them. It makes me feel like I'm taking a lot. In terms of sleep, I had better luck with my magnesium citramate from Thorne. But it had the laxative effect.

I have always been taking mag glycinate as my go-to for muscle recovery and relaxation. but recently heard how this one relaxes the mind/brain so I decided to give this a try for the first time and I totally love it. when I am still jittery from the coffee I had earlier in the day, taking this at night is a game changer. it instantly calms my anxious thoughts and centers me. it also helps me sleep. i always pop a mag for sleep. its the best, no drowsy feeling the next day ONLY IF you don't take it in the middle of the night. and although the dose says 3 capsules, I think 2 works just fine for me.

Threonate is one of the types of magnesium that is recommended for my purpose. This seems to work for me. I bought some previously and plan to buy again.

Magtein at the best price and it works well. Love the flip top bottle. Just an all around great staple supplement and brand.

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!!!

Better than bisglycinate in my opinion

Sports Research is a great brand for Magtein Magnesium L-Threonate. I always take this brand and it works well. I am pleased with the results. I would recommend and I would purchase again.

The capsules are so large that I almost choke every other time I take them. It’s really unpleasant and uncomfortable. The brand is beautiful and the product itself is good, but I won’t repurchase simply because the capsules are gigantically oversized. I’ll be looking for an alternative next time.