Semaglutide Tracker

Semaglutide is a GLP-1 receptor agonist used for weight management and blood sugar regulation. This page covers its half-life, what that timescale means for keeping a usable record, and a worked reconstitution example — not what to take or how much.

What Semaglutide's timing means for tracking

Semaglutide sits at the opposite extreme from the healing peptides: a half-life of roughly 7 days. At the usual five-half-life convention that means it takes around 35 days to clear — five weeks from a single entry.

The consequence people most often miss is accumulation. When the interval between entries is shorter than the clearance time, each one lands on top of what is still present. Levels climb for roughly four to five weeks before flattening out. Week five looks nothing like week one, even with an identical amount recorded each time.

For a log this inverts the priorities entirely. Clock time is close to irrelevant — a few hours against a 168-hour half-life is noise. What matters is the date and the gap. A skipped week is a genuine dent in a curve that takes weeks to rebuild, and it is exactly the kind of thing that gets forgotten and then misattributed later.

What to capture in the log

• Log the date; the hour barely matters at this timescale.
• Record the gap when a week is missed — with a 35-day clearance it stays visible in the curve for over a month.
• Expect the first month to look different from steady state. That is accumulation, not inconsistency.

Worked reconstitution example

Purely as arithmetic, using round numbers rather than a recommendation. If a 5 mg vial were mixed with 2 mL of bacteriostatic water, the concentration would be 2.5 mg/mL. Measuring 0.25 mg from that would come to:

Frequently asked questions