Humanin vs SS-31
Updated November 4, 2026 · Reviewed by the PeptidesDB Editorial team
A data-driven comparison of Humanin and SS-31 (also searched as SS-31 vs Humanin) — effect profiles, evidence, side effects, and which suits weight loss, muscle, or healing goals.
Verdict
Humanin centers on neuro, while SS-31 leans toward healing. On indexed research, SS-31 is ahead (Humanin: 19 studies, Human evidence; SS-31: 37, Human evidence). Choose by goal — and read the primary studies. This is research information, not medical advice.
Key takeaways
- •Humanin is strongest for neuro; SS-31 for healing.
- •Evidence: Humanin Human evidence (19 studies) vs SS-31 Human evidence (37).
- •Both are research-use compounds — not FDA-approved.
Effect profiles, overlaid
At a glance
Humanin vs SS-31: side-by-side
| Metric | Humanin | SS-31 |
|---|---|---|
| Class | Longevity | Metabolic |
| Regulatory status | Research use only | Research use only |
| Evidence grade | Human evidence | Human evidence |
| Studies indexed | 19 | 37 |
| Research level | Moderate Research | Preclinical |
| Strongest effect | Neuro & mood | Healing & recovery |
| Healing & recovery | 3.0 | 4.0▲ |
| Muscle & body comp | 1.0 | 2.0▲ |
| Metabolic & appetite | 3.0▲ | 3.0▲ |
| Neuro & mood | 4.0▲ | 4.0▲ |
| Sleep & circadian | 1.0▲ | 1.0▲ |
| Inflammation & immune | 3.0▲ | 3.0▲ |
| Skin & aesthetics | 1.0▲ | 1.0▲ |
▲ marks the higher AI-assigned effect score (0–5, describing where the literature concentrates — not clinical efficacy).
Mechanism & pharmacokinetics
| Property | Humanin | SS-31 |
|---|---|---|
| Mechanism | Modulates mitochondrial function and reduces oxidative stress | Cardiolipin binding to stabilize mitochondrial membrane |
| Route | — | Subcutaneous injection |
Established pharmacology — curated for well-characterized compounds and AI-summarized otherwise. A blank (—) means no reliable single value is published (half-life figures for some peptides genuinely disagree across sources). Verify against primary sources such as FDA labels and ClinicalTrials.gov.
What is Humanin?
Humanin is a mitochondria-derived peptide that has garnered attention for its potential roles in cellular health and longevity. It is encoded by the mitochondrial genome and is involved in various cellular processes, including the regulation of apoptosis, inflammation, and oxidative stress. The peptide has been implicated in protective mechanisms against neurodegenerative diseases and metabolic disorders, suggesting its potential as a therapeutic agent in these conditions.
Full Humanin profile, mechanism & studies →What is SS-31?
SS-31, also known as Elamipretide, is a peptide that has garnered attention for its potential role in mitochondrial protection and its implications in various health conditions, particularly those involving oxidative stress and mitochondrial dysfunction.
Full SS-31 profile, mechanism & studies →Which is better for your goal?
| Goal | Better fit | Why |
|---|---|---|
| Healing | SS-31 | 4.0/5 effect signal |
| Muscle | SS-31 | 2.0/5 effect signal |
| Metabolic | Even | Both ~3.0/5 |
| Neuro | Even | Both ~4.0/5 |
| Sleep | Even | Both ~1.0/5 |
| Inflammation | Even | Both ~3.0/5 |
| Skin | Even | Both ~1.0/5 |
Fit reflects community-perceived effect profiles — not head-to-head trials. Read each peptide's studies before deciding.
Can you stack Humanin and SS-31?
People sometimes combine peptides that target different pathways, but there is little controlled research on this specific pairing and the interactions aren't well characterized. Because neither compound is FDA-approved, we don't publish stacking or dosing protocols here. Any combination should be discussed with a qualified clinician.
Humanin vs SS-31: side effects
No community-reported effects logged yet.
No community-reported effects logged yet.
Anonymous community reports (count = number of reports), not clinical incidence rates.
What the research says
Humanin has 19 approved studies indexed (Human evidence), and SS-31 has 37 (Human evidence). The Librarian re-checks PubMed, Europe PMC and ClinicalTrials daily, so these counts move. Open each profile to read the summaries and sources.
Frequently asked questions
Is Humanin or SS-31 better?
It depends on your goal. Humanin is strongest for neuro; SS-31 for healing. SS-31 has more indexed studies (37). See the goal-by-goal breakdown above.
Is Humanin or SS-31 better for weight loss?
They score similarly on the metabolic/appetite axis in the community data.
Is Humanin or SS-31 better for muscle?
SS-31 leads on the muscle & body-composition axis (2.0/5).
Which has more research, Humanin or SS-31?
Humanin has 19 approved studies indexed (Human evidence); SS-31 has 37 (Human evidence). Higher counts mean more to read, not proven superiority.
Can you stack Humanin and SS-31?
Some users combine peptides, but there's little controlled data on this specific pairing, and interactions aren't well characterized. We don't publish stacking protocols for compounds that aren't FDA-approved. Discuss any combination with a qualified clinician.
What are the side effects of Humanin vs SS-31?
Humanin: no community-reported effects logged yet. SS-31: none logged yet. These are anonymous reports, not incidence rates — see each profile.
Is Humanin or SS-31 FDA-approved?
Humanin is a research-use compound and is not FDA-approved. SS-31 is not FDA-approved. Research-use status is not a legal clearance to compound or use in humans.
Is SS-31 better than Humanin?
For healing, SS-31 has the edge; for neuro, Humanin does. Neither is universally "better" — it's goal-dependent, and both should be weighed against their evidence base above.
Comparing related peptides
Regulatory & legal status
Humanin and SS-31 are research-use compounds and are not FDA-approved for human use. FDA approval and compounding rules for peptides change frequently, and research-use status is not a legal clearance for human use. The FDA does not review compounded drugs for safety, effectiveness, or quality. Verify current status with primary sources before acting. Last reviewed November 4, 2026.