Lion's Mane vs Semax for memory
Short answer: For memory, more users report improvement with Semax — 97% of 36 reports, versus 89% of 130 for Lion's Mane.
Lion's Mane has 4 meta-analyses and 5 randomized trials on PubMed; Semax has 0 and 1.
Based on 888 reports about Lion's Mane and 490 about Semax. Not medical advice.
| Lion's Mane Supplement | Semax Peptide | |
|---|---|---|
| User score | 46 | 55 |
| Verdict | Mixed | Mostly positive |
| Positive of reports that state an outcome | 48% | 65% |
| Reports | 888 | 490 |
| Research | BResearch: Moderate | CResearch: Limited |
| Meta-analyses / RCTs | 4 / 5 | 0 / 1 |
| Mainly used for | ||
| Appetite % reporting improvement | — | 50% (2) |
| Focus % reporting improvement | 88% (177) | 87% (140) |
| Energy % reporting improvement | 66% (35) | 86% (50) |
| Sleep % reporting improvement | 54% (28) | 43% (7) |
| Anxiety % reporting improvement | 67% (54) | 83% (29) |
| Mood % reporting improvement | 73% (98) | 88% (50) |
| Memory % reporting improvement | 89% (130) | 97% (36) |
| Performance % reporting improvement | 40% (5) | 100% (4) |
| Recovery % reporting improvement | 67% (3) | 100% (2) |
| Pain & inflammation % reporting improvement | 90% (10) | — |
| Digestion % reporting improvement | 50% (2) | — |
| Libido % reporting improvement | 4% (49) | 67% (3) |
| Heart & lipids % reporting improvement | 100% (2) | — |
| Immunity % reporting improvement | — | 75% (4) |
| Common side effects | vivid dreams, libido loss, anxiety, anhedonia | hair loss, headache, brain fog, fatigue |
| Typical dose reported | 900 mg | Not listed |
Lion's ManeFull Lion's Mane profile →
Latest review conclusion
Although commonly unreported, potential side effects of HE include stomach discomfort, headache, and allergic reactions. https://www.crd.york.ac.uk/PROSPERO/view/CRD42024571250.
Front Nutr, 2025 ↗What a user said
“Lions Mane notably lights my brain up (cognitive boost) and helps boost my mood through my typical afternoon lull.”
SemaxFull Semax profile →
What a user said
“The effects have been incredible. It feels like my background distractibility has just vanished. I can lock in and focus even when my phone and other distractions are right next to me.”
Related comparisons
Percentages come from first-hand user reports and are not clinical outcomes. Talk to a doctor before starting, stopping or combining anything. How we rate