Half-life calculator
PT-141 half-life calculator
PT-141 is a melanocortin agonist for sexual health (Vyleesi). Its elimination half-life is about 2.7 hours, so a dose largely clears in roughly 14 hours. See how it rises as it absorbs, peaks, and falls below.
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Steady-state peak
1.19 mg
Half-life
2.7 h
Reaches steady state
~1 days
Accumulation
1×
Solid = while you're dosing; dashed = projected clearance after the last dose. The curve rises as each dose absorbs, then falls — and climbs over the first several doses until it settles into a steady peak-and-trough.
How long does PT-141 stay in your system?
A compound is considered essentially cleared after about five half-lives. With PT-141's half-life of about 2.7 hours, that's roughly 14 hours after your last dose. The calculator's dashed line shows that clearance tail.
PT-141 steady state & accumulation
PT-141's half-life is short relative to weekly dosing, so it clears almost completely between doses and doesn't meaningfully accumulate (about 1×). Each dose behaves much like the first; the chart shows a clean spike that returns to baseline before the next one.
Questions
PT-141 half-life, answered
What is PT-141's half-life?
PT-141's elimination half-life is approximately 2.7 hours, the time for its level in the body to fall by half. This is an approximate figure for illustration; reported values vary.
How long does PT-141 stay in your system?
A compound is essentially cleared after about five half-lives, so PT-141 largely clears in roughly 14 hours after your last dose.
How long until PT-141 reaches steady state?
With a half-life of 2.7 hours dosed weekly, PT-141 clears almost completely between doses, so it doesn't meaningfully accumulate; each dose behaves like the first.
Does PT-141 accumulate between doses?
Not meaningfully. Its half-life is short relative to weekly dosing, so it clears between doses (accumulation ≈ 1×).
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This is a simplified one-compartment model with first-order absorption, for education, not medical advice or a guarantee of how PT-141 behaves in your body. Many peptides are not FDA-approved and are sold for research use only; Lirea neither sells nor supplies any compound.
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