PubMed
Alpha-MSH tripeptide analogs reduce inflammation
Luger TA, Brzoska T. Ann N Y Acad Sci. 2004
Compare
KPV vs TB-500
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.
Observational reporting only — not medical advice. Does not recommend doses, protocols, or treatments.
KPV
54 community reports
Overall experience
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 98% · Mixed 2% · Unfavorable overall 0%
Most reported benefits
Benefits users selected when logging a favorable or mixed check-in.
Recovery
210
Mood
210
Self-reported dose per injection
Median bucket: 0.2–0.4 mg · Most common: 0.2–0.4 mg
Reports span 0.2–3 mg
0.2–0.4 mg
116
0.4–0.6 mg
89
0.6–1 mg
3
1–2 mg
1
2–3 mg
1
Anonymized self-reports from PeptIQ users — not prescribing guidance. Buckets group similar logged amounts; open-ended top buckets mean “at least” that dose.
Commonly stacked with
How repeat users are trending
Among repeat reporters, 95% said they felt similar to their last entry, 5% more positive, and 0% more negative.
Overall, repeat reporters leaned more positive than their previous entry.
Median gap between entries: 60 days · Based on 43 repeat reporters
TB-500
103 community reports
Overall experience
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 38% · Mixed 62% · Unfavorable overall 0%
Most reported benefits
Benefits users selected when logging a favorable or mixed check-in.
Recovery
219
Most logged side effects
Side effects are logged separately from overall experience. A favorable check-in can still include nausea, fatigue, or injection-site reactions.
Headache
70
Fatigue
65
Self-reported dose per injection
Median bucket: 2–3 mg · Most common: 2–3 mg
Reports span 0 to ≥ 5 mg (open-ended top bucket)
0–0.01 mg
14
0.025–0.05 mg
1
0.1–0.2 mg
1
0.2–0.4 mg
29
0.4–0.6 mg
25
0.6–1 mg
2
1–2 mg
5
2–3 mg
72
3–5 mg
45
5+ mg
25
Anonymized self-reports from PeptIQ users — not prescribing guidance. Buckets group similar logged amounts; open-ended top buckets mean “at least” that dose.
Commonly stacked with
How repeat users are trending
Among repeat reporters, 57% said they felt similar to their last entry, 23% more positive, and 20% more negative.
Overall, repeat reporters leaned more positive than their previous entry.
Median gap between entries: 63 days · Based on 40 repeat reporters
Sources (13)
Published sources linked on the KPV and TB-500 wiki pages.
- Wiki study page →Source
- Wiki study page →Source
PubMed
KPV tripeptide exerts anti-inflammatory effects in intestinal epithelial cells
Brzoska T, Luger TA, Maaser C, et al. Dig Dis Sci. 2010
- Wiki study page →Source
PubMed
Melanocortin-derived tripeptide KPV has anti-inflammatory potential in murine models of inflammatory bowel disease
Kannengiesser K, Maaser C, Heidemann J, et al. Inflamm Bowel Dis. 2008
- Wiki study page →Source
PubMed
alpha-Melanocyte-stimulating hormone, MSH 11-13 KPV and adrenocorticotropic hormone signalling in human keratinocyte cells
Elliott RJ, Szabo M, Wagner MJ, et al. J Invest Dermatol. 2004
- Wiki study page →Source
ClinicalTrials.gov
KPV peptide studies on ClinicalTrials.gov
ClinicalTrials.gov. Clinical trial registry. 2024
- Wiki study page →Source
PubMed
The neuroimmunomodulatory peptide alpha-MSH
Ichiyama T, Sato S, Okada K, et al. Annals of the New York Academy of Sciences. 2000
- Wiki study page →Source
PubMed
Thymosin beta 4 and wound healing: a multifunctional peptide
Goldstein AL, Kleinman HK. Expert Opin Biol Ther. 2010
- Wiki study page →Source
PubMed
Myocardial regeneration: expanding the repertoire of thymosin β4 in the ischemic heart
Smart N, Riley PR. Ann N Y Acad Sci. 2012
- Wiki study page →Source
ClinicalTrials.gov
Thymosin beta-4 studies on ClinicalTrials.gov
ClinicalTrials.gov. Clinical trial registry. 2024
- Wiki study page →Source
PubMed
Thymosin β4: a multi-functional regenerative peptide. Basic properties and clinical applications
Goldstein AL, Hannappel E, Sosne G, et al. Expert opinion on biological therapy. 2012
- Wiki study page →Source
PubMed
Recombinant thymosin beta 4 can promote full-thickness cutaneous wound healing
Li X, Zheng L, Peng F, et al. Protein expression and purification. 2007
- Wiki study page →Source
PubMed
Injectable Peptide Therapy: A Primer for Orthopaedic and Sports Medicine Physicians
Mayfield CK, Bolia IK, Feingold CL, et al. Am J Sports Med. 2026
- Wiki study page →Source
PubMed
Therapeutic Peptides in Orthopaedics: Applications, Challenges, and Future Directions
Rahman OF, Lee SJ, Seeds WA. JAAOS Glob Res Rev. 2026