Head to head
Methylene blue vs Spermidine
On the strength of human evidence, Spermidine comes out ahead (evidence 25 vs 20). But they're often used for different things — read each claim before deciding.
Methylene blue
▲ Trendingthe widest hype gap on this list
Marketing intensity 95 of 100. Evidence strength 20 of 100. Verdict: Severely overhyped.
A century-old medical dye with interesting mechanisms, almost no long-term human evidence for the biohacker claims, and real, specific dangers if you take antidepressants.
Full evidence on Methylene blue →Spermidine
▲ Trendingthe autophagy-longevity bet, early in humans
Marketing intensity 72 of 100. Evidence strength 25 of 100. Verdict: Severely overhyped.
A compelling longevity mechanism (it triggers autophagy) with encouraging animal data - but the human cognition trials are small and mixed, not the proven memory aid it's sold as.
Full evidence on Spermidine →Side by side
| Metric | Methylene blue | Spermidine |
|---|---|---|
| Overall tier | Weak | Weak |
| Evidence score | 20/100 | 25/100 |
| Hype score | 95/100 | 72/100 |
| Verdict | Severely overhyped | Severely overhyped |
| Safety concern | high | low |
Quick answers
Methylene blue or Spermidine — which has better evidence?
On the strength of human evidence, Spermidine comes out ahead (evidence 25 vs 20). But they're often used for different things — read each claim before deciding.
Can you take Methylene blue and Spermidine 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.