Head to head
Iron vs Magnesium L-threonate
On the strength of human evidence, Iron comes out ahead (evidence 55 vs 35). But they're often used for different things — read each claim before deciding.
Iron
Moderateessential if low, risky if you guess
Marketing intensity 60 of 100. Evidence strength 55 of 100. Verdict: Hype ≈ evidence.
Genuinely fixes fatigue when you're iron-deficient. But taking it without a blood test is a real mistake - excess iron is harmful and there's no easy way to get rid of it.
Full evidence on Iron →Magnesium L-threonate
▲ Trendingthe 'brain magnesium' with thin, industry-funded data
Marketing intensity 80 of 100. Evidence strength 35 of 100. Verdict: Severely overhyped.
Marketed as the magnesium that reaches your brain. The human evidence is one or two small, industry-funded trials - promising, nowhere near proven, and priced at a steep premium.
Full evidence on Magnesium L-threonate →Side by side
| Metric | Iron | Magnesium L-threonate |
|---|---|---|
| Overall tier | Moderate | Limited |
| Evidence score | 55/100 | 35/100 |
| Hype score | 60/100 | 80/100 |
| Verdict | Hype ≈ evidence | Severely overhyped |
| Safety concern | moderate | low |
Quick answers
Iron or Magnesium L-threonate — which has better evidence?
On the strength of human evidence, Iron comes out ahead (evidence 55 vs 35). But they're often used for different things — read each claim before deciding.
Can you take Iron and Magnesium L-threonate together?
This page compares the evidence, not interactions. Some supplements interact with each other or with medications — check each one's safety section and talk to a pharmacist before stacking.