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Magnesium Glycinate for Sleep: What Experts Take
If you are shopping for magnesium to sleep better, the first real question is which form, and the experts do not all pick the same one. Search results push magnesium glycinate hard, and there is a genuine reason: it is the form Dr. Rhonda Patrick says she personally takes. But Andrew Huberman reaches for a different form entirely.
This roundup pulls exactly what those experts said about magnesium for sleep, with timestamps so you can hear each source yourself. None of it is medical advice. Magnesium can interact with medications and with kidney conditions, so talk to your doctor before starting a supplement, and especially before stacking several at once.
Note: Sourced expert opinion from public episodes, not medical advice. Talk to your doctor before changing supplements or treatment.
On Tim Ferriss's podcast, Dr. Rhonda Patrick is direct about her choice: she uses magnesium glycinate and calls it the form that she takes. On Huberman's podcast she expands on it, saying she likes to take magnesium bisglycinate or glycinate specifically for sleep. Bisglycinate and glycinate point to the same basic idea, magnesium bound to the amino acid glycine, and Patrick treats them interchangeably.
What makes this worth noting is that it is a preference, not a product she is selling. She is naming what she actually takes, which is the kind of sourcing worth more than a shelf tag. If a researcher who studies this for a living reaches for glycinate at night, that is a meaningful data point for a sleep-focused buyer.
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The reason glycinate keeps surfacing for sleep is hiding in the name. The magnesium is bound to glycine, and Patrick makes the connection explicit, adding that glycine also is great to take for sleep. In other words, the glycinate form is a two-for-one: you get the mineral plus an amino acid she considers sleep-friendly in its own right.
That framing helps explain why glycinate, rather than a more laxative-leaning form, dominates the nighttime conversation. Patrick is not claiming it knocks you out like a sedative. She is pointing out that both halves of the molecule line up with rest, which is a modest and believable reason to prefer it for an evening dose.
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Here is where the experts split, and it matters for shoppers. Andrew Huberman does not lead with glycinate. He says he has been taking magnesium threonate for well over a decade, because he learned it is the form that most readily crosses the blood-brain barrier. He puts a number on it too, noting that for many people 145 milligrams of magnesium threonate can be very beneficial, and he lists it among the supplements he takes and recommends for sleep, alongside apigenin and theanine.
So you have two credible experts and two different forms. Patrick favors glycinate for sleep and the glycine that rides along with it, while Huberman favors threonate for its reach into the brain. Neither is calling the other wrong, and the honest takeaway is that form is a personal choice with real tradeoffs, not a solved question you can outsource to a bestseller list.
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Before you buy any of it, notice how conservative these experts are about supplements in general. Huberman frames supplementation as a last resort: behavioral tools first, then nutrition, then supplements, then prescription drugs. Magnesium sits in that third tier, which means it earns its place after your light exposure, caffeine timing, and sleep schedule are already handled, not instead of them.
His caution is not just talk. In the same sleep toolkit he warns strongly against melatonin supplements, noting that commercial doses run far above what the body makes and can affect hormone systems, especially in children. Read magnesium glycinate in that spirit: a comparatively gentle, well-tolerated mineral for many people, but still a supplement to size sensibly, start low, and clear with your doctor, particularly if you take other medications.
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Dr. Rhonda Patrick says she takes magnesium bisglycinate or glycinate specifically for sleep, and notes that glycine itself is great for sleep. It is the form she personally uses, though she frames it as a preference rather than a guaranteed fix.
The experts differ. Patrick prefers glycinate for sleep and the glycine bound to it, while Huberman takes magnesium threonate because it most readily crosses the blood-brain barrier and includes it in his sleep stack. Form is a personal tradeoff, not a settled ranking.
He says 145 milligrams of magnesium threonate can be very beneficial for many people, and adds that he has taken that particular form for well over a decade because it reaches the brain more readily.
Huberman puts supplements last: behavior first, then nutrition, then supplementation, then prescription drugs. Handle morning light, caffeine timing, and a consistent schedule first, then consider magnesium as an add-on rather than a substitute.
The honest bottom line is that the experts endorse magnesium for sleep but do not agree on the form. Dr. Rhonda Patrick takes glycinate, drawn to the sleep-friendly glycine it is bound to, while Andrew Huberman takes threonate for its reach into the brain. Both keep supplements in the last tier, behind good sleep habits. Pick a form deliberately, start with a modest dose, and check with your doctor before adding it, especially alongside anything else you already take.