PubMed
Humanin: a novel mitochondrial-derived peptide that protects against cellular stress
Hashimoto Y, Niikura T, Ito Y, et al. Proc Natl Acad Sci USA. 2003
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Side-by-side observational reports from PeptIQ users. This compares self-reported patterns — not clinical head-to-head trials.
Last reviewed . By the PeptIQ team.
From check-in ratings — separate from side effects logged below. Side effects are logged separately from overall experience. A favorable check-in can still include nausea, fatigue, or injection-site reactions.
Favorable 100% · Mixed 0% · Unfavorable overall 0%
Benefits users selected when logging a favorable or mixed check-in.
Median bucket: 2+ mg · Most common: 2+ mg
Reports span 1 to ≥ 2 mg (open-ended top bucket)
Anonymized self-reports from PeptIQ users — not prescribing guidance. Buckets group similar logged amounts; open-ended top buckets mean “at least” that dose.
From check-in ratings — separate from side effects logged below. Side effects are logged separately from overall experience. A favorable check-in can still include nausea, fatigue, or injection-site reactions.
Favorable 99% · Mixed 1% · Unfavorable overall 0%
Benefits users selected when logging a favorable or mixed check-in.
Side effects are logged separately from overall experience. A favorable check-in can still include nausea, fatigue, or injection-site reactions.
Median bucket: 2–3 mg · Most common: 1–2 mg
Reports span 0 to ≥ 5 mg (open-ended top bucket)
Anonymized self-reports from PeptIQ users — not prescribing guidance. Buckets group similar logged amounts; open-ended top buckets mean “at least” that dose.
Among repeat reporters, 100% said they felt similar to their last entry, 0% more positive, and 0% more negative.
Overall, repeat reporters leaned similar or mixed compared to their previous entry.
Median gap between entries: 51 days · Based on 45 repeat reporters
Published sources linked on the Humanin and Retatrutide wiki pages.
PubMed
Hashimoto Y, Niikura T, Ito Y, et al. Proc Natl Acad Sci USA. 2003
PubMed
Mitchell AC, Jiang S, Peterhoff CM, et al. Mol Neurodegener. 2015
PubMed
Hazafa A, Batool A, Ahmad S, et al. Life sciences. 2021
PubMed
Rochette L, Meloux A, Zeller M, et al. Archives of cardiovascular diseases. 2020
PubMed
Rosenstock J, Frias J, Jastreboff AM, et al. Lancet. 2023
PubMed
Jastreboff AM, Kaplan LM, Frias JP, et al. N Engl J Med. 2023
ClinicalTrials.gov
ClinicalTrials.gov. Clinical trial registry. 2024
ClinicalTrials.gov
ClinicalTrials.gov. Clinical trial registry. 2024
PubMed
Jastreboff AM, Kaplan LM, Frías JP, et al. The New England journal of medicine. 2023
PubMed
Katsi V, Koutsopoulos G, Fragoulis C, et al. Biomolecules. 2025