Thorne Magnesium Bisglycinate

Most athletes know they should be taking magnesium. Few actually are. Your muscles cramp in the final miles, sleep feels shallow no matter how many hours you log, and your energy flatlines mid-afternoon — that's not overtraining. That's a mineral gap. Magnesium drives over 300 biological processes, and endurance athletes burn through it faster than sedentary people. The problem isn't awareness. It's absorption. Most magnesium supplements are barely absorbed, and the forms that are absorbed often cause GI distress. You take them, they don't work, you stop.

Thorne Magnesium Bisglycinate is the form that actually gets in.

What Makes It Different

Bisglycinate = Your Body Actually Uses It Standard magnesium oxide sits in your gut like chalk. Bisglycinate bonds magnesium to glycine — an amino acid your intestines absorb efficiently — so the mineral gets where it needs to go: your muscles, your cells, your sleep pathways. Better absorption means better results.

It Fuels What Runs You Magnesium is required to produce ATP — the molecule your cells use for energy. Without enough of it, your body can't power muscle contractions, regulate heart rhythm, or build bone. It's foundational, not optional.

NSF Certified for Sport Thorne's formula is NSF Certified for Sport, meaning it's been independently tested for banned substances. If you're a competing athlete, that certification is your insurance policy.

Magnesium plays a direct role in muscle recovery and sleep quality — two things endurance athletes constantly chase. The bisglycinate form is gentler on the GI system than cheaper forms, and Thorne lightly sweetened this powder with monk fruit and a touch of citrus so it doesn't taste like chalk. Mix one level scoop (4g) with 8 oz of water once or twice daily.

How to Use Thorne Magnesium Bisglycinate

Mix one level scoop (4g) with 8 oz of water once or twice daily. Take it in the evening to support sleep and overnight recovery — that's when your body does its best repair work. If you're doubling up, a morning dose pairs well with breakfast to support daily energy production.

Elite endurance athletes and coaches consistently recommend bisglycinate over other forms because the absorption difference is measurable. When your body's actually taking in the magnesium, you'll notice it in your recovery, your sleep, and your muscle function within the first week or two of consistent use.

This isn't just another mineral supplement. This is the foundation your training can't afford to skip.