Histrelin: track every shot and what's still active
GnRH agonist implant branded as Supprelin LA (pediatric) and Vantas (adult); FDA-approved for central precocious puberty and advanced prostate cancer as a year-long implant. In the Peppy catalog, Histrelin is a pre-mixed injection, dosed in mg, typically as needed, with a listed half-life of about 52.1 weeks.
How long Histrelin stays active
Active in your system — Histrelin
estimate for one dose, half-life 8760 hAn estimate from the half-life, not a measurement. Individual clearance varies. Peppy shows this curve for each protocol under Active in your system.
Histrelin dose steps in the catalog
| Histrelin — catalog dose ladder | Dose |
|---|---|
| Step 1 | 50 mg |
Dose steps as listed in the Peppy catalog so the picker is fast — not a recommendation. Your prescriber sets your dose; Peppy tracks it.
How to track Histrelin in Peppy
- Open the Protocols tab, tap + and search for Histrelin (or Supprelin LA). Form, unit and typical frequency are prefilled.
- Enter your dose and pick a schedule. Titration step-ups and on/off cycles are available (Pro).
- Pick a colour and, for injections, a site rotation order. Peppy suggests the next site each time you log.
- On shot day, the Today tab counts down and one tap opens the Log shot sheet with the body map.
- Open the protocol to see Active in your system, the half-life curve for what you have logged (Pro).
- Log a daily check-in (side effects, feelings, weight) and see it lined up against every dose in Progress.
Track Histrelin in Peppy
Schedule, units, site rotation and reminders. Free on iPhone, no account.
Free · iPhone · no accountFrequently asked
How long does Histrelin stay in your system?
The Peppy catalog lists a half-life of about 52.1 weeks for Histrelin. After roughly five half-lives, about 260.7 weeks, most of a single dose has cleared. That is an estimate from the half-life, not a measurement, and individual clearance varies.
Can I track Histrelin in Peppy?
Yes. Histrelin is one of 123 compounds built into Peppy, with its form, unit and typical frequency prefilled. Add it as a protocol, set your schedule, and Peppy handles the countdown, the log and the reminders (Pro).
Where should I inject Histrelin?
Follow your prescriber's instructions. For subcutaneous shots the GLP-1 labels list the abdomen, thigh and upper arm and say to rotate. Peppy's body map has 13 sites, suggests the next one, and shows when each was last used. Read the site rotation guide.
More in Hormonal
Not medical advice. Peppy is a tracking tool, not medical advice. Dose calculations are mathematical conversions only. Always follow your prescriber's instructions and verify every draw-up yourself.