Head to head
Iron vs L-tyrosine
On the strength of human evidence, Iron comes out ahead (evidence 55 vs 45). 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 →L-tyrosine
Limitedfor stress and sleep loss, not everyday focus
Marketing intensity 55 of 100. Evidence strength 45 of 100. Verdict: Slightly overhyped.
Genuinely helpful for holding cognition together under acute stress or sleep deprivation - but largely useless as an everyday 'focus' pill when you're rested.
Full evidence on L-tyrosine →Side by side
| Metric | Iron | L-tyrosine |
|---|---|---|
| Overall tier | Moderate | Limited |
| Evidence score | 55/100 | 45/100 |
| Hype score | 60/100 | 55/100 |
| Verdict | Hype ≈ evidence | Slightly overhyped |
| Safety concern | moderate | low |
Quick answers
Iron or L-tyrosine — which has better evidence?
On the strength of human evidence, Iron comes out ahead (evidence 55 vs 45). But they're often used for different things — read each claim before deciding.
Can you take Iron and L-tyrosine 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.