I Tried Every Magnesium in My Cabinet. Only One Survived the Month.
Glycinate, citrate, threonate, powders, gummies — a month of testing, and a clear winner for winding down at night.
Jordan Lee · Senior Reviews EditorPublished July 10, 2026 · Updated July 16, 2026
By the end of last winter my nightstand looked like a supplement aisle. Six different magnesiums, three formats, and no idea which one was actually doing anything. So I did the obvious thing: I tested all of them, one at a time, for a month.
Why magnesium, and why now
Magnesium is having a moment, and for once the hype has some science behind it. If you want the full breakdown, we wrote a separate guide. The short version: the form matters more than the milligrams.
How I actually tested them
The ground rules
- One product per week, same 9:30 p.m. dose.
- No other new supplements or sleep changes.
- A one-line sleep note every morning before coffee.
The two that actually earned a spot
By week three I stopped reaching for my phone at 3 a.m. That was the whole point.
The verdict
If you only buy one
After a full month, Flamingo Calm Glycinate was the one I kept taking after the testing was over — the clearest sign a product actually works.
- Best overall: Flamingo Calm Glycinate.
- Best value: Wisp Drift Nightly Blend.