01 / RESEARCH SUMMARY
Sermorelin Research Summary
Sermorelin is the first 29 amino acids of growth hormone-releasing hormone (GHRH), the active portion of the natural hormone. It signals the pituitary to release growth hormone in natural pulses while keeping the body's feedback controls intact. It was FDA-approved (Geref) for diagnosing and treating growth hormone deficiency in children before being commercially discontinued in 2008. It is still commonly prescribed through compounding pharmacies.
Read the full guide →02 / WHY RESEARCHERS STUDY IT
Why Sermorelin draws research interest
These are the areas researchers and the peptide community explore Sermorelin for most often. They describe what is being studied — not proven benefits, approved uses, or promised results.
Natural GH release
Stimulates GH while keeping the body's feedback controls.
Sleep & recovery
Explored for deeper sleep and recovery.
Healthy aging
Studied for body composition and vitality with age.
Evidence ranges from early lab work to large clinical trials depending on the use — see the sections below for the data and sources.
03 / DOSING & RECONSTITUTION
Dosing & Reconstitution Guide
A single practical dilution with accurate dosing, step by step
Standard Approach (2.5 mL = 2 mg/mL)
- Reconstitute: Add 2.5 mL bacteriostatic water to one 5 mg vial → final concentration 2 mg/mL (2,000 mcg/mL).
- Typical range: 200–500 mcg 1x/day, 12–16 weeks · at bedtime · fasted.
- Easy measuring: At 2 mg/mL, 1 unit ≈ 20 mcg on a U-100 syringe, so doses read at 10–25 units — a 0.3 mL (30-unit) syringe makes them easier to read.
- Storage: Lyophilized: store at −20 °C (−4 °F); after reconstitution, refrigerate at 2–8 °C (35.6–46.4 °F) and do not freeze the mixed solution.
| Phase / Week(s) | Dose & Frequency | Volume (U-100 units / mL) |
|---|---|---|
| 1–4 | 10 units (0.10 mL) | |
| 5–8 | 15 units (0.15 mL) | |
| 9–12 | 20 units (0.20 mL) | |
| 13–16 | 25 units (0.25 mL) |
04 / RECONSTITUTION CALCULATOR
Mix & measure Sermorelin · 5 mg
Pre-filled with this protocol's recommended BAC water and starting dose — edit any field to run your own numbers.
- CONCENTRATION
- 2.00 mg/mL
- DRAW VOLUME
- 0.100 mL
- ON THE SYRINGE
- 10.0 units
- DOSES / VIAL
- 25
Reconstitution math only. U-100 syringe: 100 units = 1 mL.
Reconstitution GuideFull calculator →05 / STORAGE
Storage Instructions
Lyophilized (powder)
Store in the freezer at −20 °C (−4 °F) for long-term storage, or refrigerated at 2–8 °C for shorter periods. Keep dry, sealed and away from light. Let a frozen vial reach room temperature before opening to avoid condensation.
Reconstituted
Refrigerate at 2–8 °C (35.6–46.4 °F) and use within about 28 days. Do not freeze. Keep away from heat and direct light, and avoid repeated temperature swings. Swirl gently — never shake.
Reconstitution steps
- Wipe the vial stopper with an alcohol swab.
- Draw the BAC water and release it slowly down the inside wall of the vial.
- Swirl or roll gently until fully dissolved — don't shake.
- Label with the date and concentration and refrigerate.
06 / RESEARCH FINDINGS
What Research Shows
Human research
- Pituitary growth-hormone release and pediatric growth-hormone assessment or treatment have a clinical research history.
Research context
Historical clinical use does not establish anti-aging, fitness, or adult research-vial benefits.
07 / MOLECULAR BIOLOGY
Mechanism of Action
Characterized biological pathway
Growth hormone-releasing hormone receptor
A GHRH fragment analog that stimulates pituitary growth hormone release. Diagnostic and therapeutic effects depend on endocrine status and the clinical setting.
Adamantane & the blood–brain barrier
Chemically attaching an adamantane group to a peptide can increase its lipid (fat) solubility. Researchers hypothesize that this modification may help certain compounds cross the tightly regulated blood–brain barrier. The effect depends on the specific modified molecule; greater lipid solubility alone does not establish brain delivery or clinical benefit. This does not apply automatically to the unmodified peptide and is not a reconstitution additive.
08 / LIFESTYLE FACTORS
Lifestyle Factors
- Sleep: aim for 7–9 hours; the largest natural GH pulse happens in deep sleep.
- Fasted dosing: dose away from meals — elevated insulin and carbs blunt the GH pulse.
- Training: pair with resistance training and real recovery days.
- Protein: keep protein intake adequate to support lean mass.
- Consistency: dose at the same time each day and rotate injection sites.
09 / BENEFITS & SIDE EFFECTS
Potential Benefits & Side Effects
Potential Benefits
- Deeper, more restorative sleep
- Improved recovery from training
- Gradual improvements in body composition (more lean mass, less fat)
- Better skin, hair and overall vitality reported over longer cycles
Side Effects
- Injection-site redness or irritation
- Water retention, tingling or numbness in hands
- Head rush, flushing or lightheadedness shortly after dosing
- Increased hunger (more with ghrelin-pathway peptides)
- Higher blood sugar at larger doses — monitor glucose and IGF-1
10 / STUDIES
Studies & references
11 / SAFETY
Safety considerations
- Verify the active identity, lot number, and matching certificate of analysis. Testing does not by itself establish sterility or suitability for human use.
- Follow documented product-specific storage and preparation requirements; stability and diluent compatibility depend on the formulation.
- Research powders are not interchangeable with prescription formulations. Do not infer an injection or nasal protocol from a concentration calculation.
- For medical care, pregnancy, existing conditions, or medication interactions, consult a qualified healthcare professional.
12 / RECOMMENDED SOURCE
Recommended Source
For research peptides, we point researchers to Orbitrex Peptides for Sermorelin.
Why Orbitrex?
- Family-owned & independently tested: Multiple laboratories verify quality, with batch-specific testing in every COA.
- Everyday value: Buy 4, Get 1 Free on eligible products.
- Loyalty credit: 5% back in loyalty credit for future purchases.
- VerifyPass discount: 20% off for qualifying groups — stacks with affiliate codes.
- Free 2nd Day shipping: Free UPS 2nd Day Air on orders $200+, applied automatically at checkout.
All products are for research use only. Availability and offers subject to change.