Sermorelin Dose by Weight
There are two different numbers floating around under “sermorelin dosage,” and this tool keeps them separate: the dose that was actually tested in a published adult trial, scaled to a body weight, next to the flat nightly range commercial sellers commonly market.
The honest finding is the point: for most adult body weights, the trial-equivalent dose sits above the commonly marketed range, not below it. See what that trial actually measured for the outcomes behind the dose.
Body weight
The one adult trial, scaled to this weight
10 mcg/kg × 70.0 kg (154.3 lb)
700 mcg nightly
From the one placebo-controlled adult trial (Vittone et al.) — see what it actually measured.
What sellers commonly market
Flat, regardless of body weight
200–300 mcg nightly
Not sourced to any published dose-finding trial.
At 70.0 kg, the trial-equivalent dose (700 mcg) sits above the commonly marketed range, not below it — 2.3× the top of that range. That is the direction most adult body weights land in: the one dose with real outcome data behind it is higher than what is typically sold, not a gentler starting point beneath it.
Why the marketed range is a separate thing from the trial dose
The 10 mcg/kg figure comes from the one placebo-controlled adult trial with real outcome data — positive on lean body mass in men, null on sleep in both sexes, over roughly 16–20 weeks. The 200–300 mcg flat range is what commercial telehealth sellers commonly advertise regardless of a buyer’s body weight. That range has never been tested in a controlled dose-finding trial of its own — it is a marketing convention, not a study result, and this tool never presents it as one.
This is arithmetic, not a recommendation: the calculator scales a published dose by the weight you enter and states where it lands relative to what is commonly sold. It does not suggest which number to use.