Victoza Half-Life Calculator

Victoza is liraglutide, with an elimination half-life of 13 hours and peak levels 8 to 12 hours after a dose, per the FDA label. On the label schedule (a daily injection), levels reach steady state about 3 days after the first dose, and after a last dose they fall below 5% of that steady level in about 3 days.

Between scheduled doses, levels swing between a peak and a trough of about 61% of that peak, which is why the calculator's chart looks like a sawtooth rather than a flat line. The label also reports that approximately 55%of each dose is absorbed into circulation; the calculator's mg figures build that in.

The Victoza label instructs patients not to take an extra dose to make up for a missed one; the once-daily schedule simply resumes with the next dose.

That window is the half-life doing the work: with 13 hoursof half-life, a late dose still lands on a meaningful base. This is the label's instruction to prescribers, not our advice; if you have missed a dose, your own label and prescriber are the authority.

With a 13-hour half-life, Victoza works on a completely different timescale from the weekly GLP-1s: levels swing further between doses (the trough sits near 61% of the peak), missed days genuinely lower the base, and both starting and stopping play out in days rather than weeks.

The practical upside is a fast reset after stopping; the practical demand is day-to-day consistency, which is exactly the kind of routine a dose tracker is for.