Half-life calculator
Semaglutide half-life calculator
Semaglutide is the GLP-1 medication behind Ozempic and Wegovy. Its elimination half-life is about 6.9 days, so a dose largely clears in roughly 34 days. See how it rises as it absorbs, peaks, and falls below.
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Steady-state peak
0.798 mg
Half-life
6.9 days
Reaches steady state
~5 weeks
Accumulation
1.98×
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 Semaglutide stay in your system?
A compound is considered essentially cleared after about five half-lives. With Semaglutide's half-life of about 6.9 days, that's roughly 34 days after your last dose. The calculator's dashed line shows that clearance tail.
Semaglutide steady state & accumulation
Dosed weekly, each Semaglutide dose is given before the previous one fully clears, so levels climb over the first several doses and settle into a steady peak-and-trough pattern in about 5 weeks, building to about 1.98× a single dose. That accumulation is why the early weeks can feel different from later on, and why a gradual titration gives your body time to adjust.
Questions
Semaglutide half-life, answered
What is Semaglutide's half-life?
Semaglutide's elimination half-life is approximately 6.9 days, 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 Semaglutide stay in your system?
A compound is essentially cleared after about five half-lives, so Semaglutide largely clears in roughly 34 days after your last dose.
How long until Semaglutide reaches steady state?
Dosed weekly, Semaglutide climbs over the first several doses and reaches a steady peak-and-trough pattern in about 5 weeks, building to about 1.98× a single dose.
Does Semaglutide accumulate between doses?
Yes. At weekly dosing the model shows roughly 1.98× accumulation at steady state, because each dose is given before the previous one has fully cleared.
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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 Semaglutide 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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