Peptide Half-Life Calculator

Understand peptide pharmacokinetics: peak concentration, elimination time, and dosing intervals.

Calculate Half-Life & Peak Timing

Pharmacokinetic Profile

Half-Life
hours
Peak Concentration
(Cmax)
Peak Time
Time to 50% Elimination
Time to 25% Remaining
Time to 12.5% Remaining
Time to Clinically Undetectable

Concentration Over Time

Dosing Recommendations

Peptide Database

Quick reference for common research peptides.

Ipamorelin
Half-Life: 2 hours
Peak: 0.5-1 hour
Typical Dose: 100-200 mcg
Frequency: 1-3x daily
CJC-1295 (with DAC)
Half-Life: 6-8 days
Peak: 4-6 hours
Typical Dose: 100 mcg
Frequency: 1-2x weekly
CJC-1295 (without DAC)
Half-Life: 0.5-1 hour
Peak: 0.25-0.5 hour
Typical Dose: 100-200 mcg
Frequency: 1-3x daily
GHRP-6
Half-Life: 0.5-1 hour
Peak: 0.5-1 hour
Typical Dose: 50-100 mcg
Frequency: 1-3x daily
BPC-157
Half-Life: 5-6 hours (localized)
Peak: 1-2 hours
Typical Dose: 10-20 mcg
Frequency: 1-2x daily
TB-500
Half-Life: 2 hours
Peak: 15-30 minutes
Typical Dose: 5-10 mg
Frequency: 2-3x weekly
Semaglutide
Half-Life: 7 days
Peak: 24-48 hours
Typical Dose: 0.5-2 mg
Frequency: 1x weekly
MK-677
Half-Life: 4-6 hours
Peak: 1-2 hours
Typical Dose: 10-25 mg
Frequency: 1-2x daily (oral)