← Research GuidesDURATION
Half-Life Comparison
Half-life is the time required for a compound's concentration in a system to reduce by half.
Distribution
Compounds grouped by duration
Short
18
- · GHK-Cu
- · MOTS-c
- · BPC-157
- · Semax
- · Selank
- · NAD+
- · DSIP
- · Tesamorelin
- · AHK-Cu
- · KPV
- · SS-31
- · AOD-9604
- · 5-Amino-1MQ
- · Epitalon
- · Adamax
- · Kisspeptin
- · Oxytocin
- · SNAP-8
Moderate
5
- · TB-500
- · PT-141
- · CJC-1295 + Ipamorelin
- · Melanotan II
- · Dihexa
Long
1
- · Retatrutide
Comparative Bar Chart
Half-life by compound
Bars represent approximate relative half-life from published research-literature averages — visual comparison only, not dosing guidance.
MOTS-c
Short
Semax
Short
Selank
Short
NAD+
Short
DSIP
Short
KPV
Short
SS-31
Short
AOD-9604
Short
5-Amino-1MQ
Short
Epitalon
Short
Kisspeptin
Short
Oxytocin
Short
SNAP-8
Short
GHK-Cu
Short–Moderate
BPC-157
Short–Moderate
Tesamorelin
Short–Moderate
AHK-Cu
Short–Moderate
Adamax
Short–Moderate
TB-500
Moderate
PT-141
Moderate
Melanotan II
Moderate
CJC-1295 + Ipamorelin
Moderate–Long
Dihexa
Moderate–Long
Retatrutide
Long
Short bandsModerate–Long bands
Decay Curves
Concentration over 7 days
Theoretical first-order decay (C = 100 · 0.5t / t½) for one representative half-life per band. Visual model only.
Short (~2h)
Short–Moderate (~6h)
Moderate (~16h)
Moderate–Long (~48h)
Long (~120h)
Why It Matters
Half-life shapes everything from study design to comparative analysis. Shorter half-lives mean denser observation windows; longer half-lives suit cumulative-effect models.