The Magnesium Masterclass
Why your magnesium isn't working — and the only three types that do.
If you've ever Googled "how to fix constipation," you've been told to take magnesium.
And if you're like most people, you drove to the pharmacy, bought a bottle that said "Magnesium" on the front, took it for a week, and nothing happened. Maybe you slept a little better. But your gut didn't move.
Here is the frustrating truth about the supplement industry: There are 11 different types of magnesium, and only three of them actually make you poop.
If you buy the wrong one, you are literally flushing money down the drain (without the benefit of actually flushing anything else).
1. Magnesium Citrate — the gold standard for daily use
This is the workhorse. Magnesium citrate is an osmotic laxative, meaning it pulls water into your intestines to soften stool and trigger motility. It is generally safe for daily use and doesn't cause the aggressive cramping of stimulant laxatives.
Dosing: Most clinical studies use 400mg to 800mg daily, taken before bed.
2. Magnesium Oxide — the heavy hitter
Oxide is poorly absorbed by the body. Normally, that's a bad thing for a supplement. But for constipation, it's exactly what you want. Because your body doesn't absorb it, it stays in your colon, drawing in massive amounts of water. It is stronger than citrate.
Warning: This can cause urgency. Don't take a high dose if you have a morning flight.
3. Magnesium Sulfate — the nuclear option
You know this as Epsom salt. In a clinical setting, oral magnesium sulfate is used to completely clear the bowel. It is harsh, it tastes terrible, and it is highly effective. This is for emergencies only — not daily use.
The ones to avoid
If your bottle says Magnesium Glycinate, Magnesium Threonate, or Magnesium Taurate, stop taking it for your gut. These are highly absorbable forms designed to cross the blood-brain barrier. They are fantastic for anxiety, sleep, and muscle recovery. They will do nothing for your constipation.
This week's protocol
Check your supplement cabinet right now. Look at the ingredient label on the back (not the front). If it doesn't say Citrate or Oxide, you have the wrong tool for the job. Swap it out tonight.
If you'd rather skip the powder, the capsule version we keep on the shelf for travel:
Talk next week,
— The Bowel Brief Team
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