Sermorelin Research Dosing Protocol

[Randy]

For research use only. Not medical advice.

Overview

Sermorelin is a GHRH analog that stimulates the pituitary to release endogenous growth hormone in a physiologic, pulsatile manner.

It is commonly used in nightly subcutaneous research protocols to support natural GH rhythms and improve IGF-1 levels without producing supraphysiologic spikes.
Standard Daily Range

200–400 mcg once daily

Administered at bedtime to align with the body’s largest natural GH pulse.

Titration Schedule

Week 1-2

200 mcg nightly

Establishes tolerance and minimizes early flushing or warmth.

Weeks 3–6

300 mcg nightly

This is the most common working dose for general GH support.

Weeks 6–8

400 mcg nightly

Increased GH release for subjects who tolerate 300 mcg well.

Optional Upper Range

500 mcg nightly

Used in some research settings, though diminishing returns above 400 mcg are common.

Timing

Bedtime administration is strongly preferred
because endogenous GH secretion peaks during the early stages of sleep.

Avoid carbs/fats for 60–90 minutes before dosing, as nutrients can blunt GH release.

Alternate timing options (less common):

Early morning fasted

Post-workout
But bedtime remains the gold standard for physiologic GH synchronization.

Cycle Length

Typical Sermorelin research cycles:

8–12 weeks on, followed by

2–4 weeks off

Some researchers run it longer, especially when combined with GHRPs like ipamorelin.

Common Research Notes

Sermorelin’s effects are gradual—sleep improvement, recovery, and IGF-1 elevation typically accumulate over several weeks.

Injection-site flushing or warmth is possible early but typically fades.

Stacks extremely well with short-acting GHRPs (e.g., ipamorelin, GHRP-2, GHRP-6) for enhanced GH pulses.

Because Sermorelin acts upstream (pituitary-level), responsiveness depends on pituitary health; older subjects sometimes require the higher end of the dosing range.

[ResearchCat]

I know sermorelin is FDA approved and very safe. I researched it for a few months when I started this adventure. I have to say results are subtle at best. As compared with CJC/Ipamorelin, which is more like a shotgun. FWIW, my sermorelin research was in line with the prescriber’s recommendation, while CJC/Ipamorelin was inline with common protocols(200-300mcg/day).

I don’t completely dismiss it the way a lot of YouTubers do, but for researchers who can tolerate it and are less patient, it seems most of the other GHRH peptides give more noticeable results faster.