EDUCATIONAL AND RESEARCH REFERENCE ONLY — NOT MEDICAL ADVICE — NOT FDA APPROVED
hormonal20 studies

Sermorelin Dosing Protocol: GHRH Research Guide

Also known as: GHRH (1-29), Geref

What is a Peptide?

A short chain of amino acids (2-50) linked by peptide bonds. Smaller than proteins. Your body produces thousands of peptides naturally as signaling molecules that regulate everything from appetite to healing. Therapeutic peptides mimic or enhance these natural signals.

Sermorelin is the same active compound as Geref (discontinued) (EMD Serono). Not FDA approved in the US.

Research reference only. Sermorelin is not FDA approved for human use (unless specified above). This information does not constitute medical advice.

Overview

Sermorelin is a synthetic peptide corresponding to the first 29 amino acids of growth hormone-releasing hormone. It stimulates the pituitary gland to produce and release growth hormone.

Mechanisms of Action

  • Binds to GHRH receptors in pituitary
  • Stimulates GH synthesis and secretion
  • Preserves normal feedback mechanisms
  • Does not suppress natural GH production

Research Protocols

Summaries of published research. For educational purposes only.

Protocol NameSourceDoseFrequencyDurationRouteEvidenceLinkSave
Growth Hormone Deficiency Study
published study
0.3 mgDaily12 monthsSubcutaneoushumanSign in to Save

Related Studies

20 Human

Although preclinical studies are promising, there is a current lack of clinical trials. This review integrates current mechanistic insights with orthopaedic relevance, emphasizing safety, efficacy, and future directions for responsible integration into musculoskeletal care.

Limitations: No placebo control reported. Review article — no new primary data.

2026|Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews
PubMed

Finally, both MIA-602 and MIA-690 enhanced radiosensitivity in primary human NSCLC cells. These findings highlight the potential of GHRH antagonists as radiosensitizers in NSCLC treatment.

Limitations: No placebo control reported.

2025|International journal of molecular sciences
PubMed

Nearly all requirements of the recent technical documents from the World Anti-Doping Agency (WADA) considering their minimum required performance levels (MRPL) are fulfilled, and the method was validated for its utilisation as initial testing procedure in doping controls. Finally, the approach was applied to authentic post-administration study urine samples (for insulins and gonadorelin) in order to provide proof of principle.

Limitations: No placebo control reported.

2024|Journal of mass spectrometry : JMS
PubMed

GHRP-4, GHRP-6 and Sermorelin (22-29) can be considered as in-house ISs as they were stable to enzyme and blood treatment and can be used for the quantification of peptides in biological samples. Peptides GHRP-6 and Sermorelin (22-29) were used to analyse a dimeric peptide (26 [F] LfcinB (20-30)2 ) in four different matrices to test these peptides as in-house IS.

Limitations: No placebo control reported.

2023|Biomedical chromatography : BMC
PubMed

An optimized C18 SPE was used for that purpose in order to provide low sample conductivity (<130&#xa0;&#xb5;S/cm) and preserve the efficiency of LVSS preconcentration. SEF of 640 was obtained with desalted urine spiked with sermorelin by comparison to the CZE (without preconcentration) method.

Limitations: No placebo control reported.

2023|Electrophoresis
PubMed

After high-throughput drug screening, we found that recurrent glioma patients were most sensitive to sermorelin. Further analysis revealed that sermorelin was suitable for recurrent patients with high grade, IDH-wildtype and 1p/19q non-codeletion status.

Limitations: No placebo control reported.

2022|Annals of translational medicine
PubMed

Sermorelin is a well tolerated analogue of GHRH which is suitable for use as a provocative test of growth hormone deficiency when given as a single intravenous 1 microg/kg bodyweight dose in conjunction with conventional tests. Limited data suggest that once daily subcutaneous sermorelin 30 microg/kg bodyweight is effective in promoting growth in some prepubertal children with idiopathic growth hormone deficiency.

Limitations: No placebo control reported.

2009|BioDrugs : clinical immunotherapeutics, biopharmaceuticals and gene therapy
PubMed

Sermorelin: a better approach to management of adult-onset growth hormone insufficiency? (Clinical interventions in aging, 2008)

Limitations: No placebo control reported.

2008|Clinical interventions in aging
PubMed

The effect of PEG molecular weight, number of PEG chains bound and position of PEGylation site on GRF activity were investigated. Mono-PEGylated isomers with a PEG5000 polymer chain linked to Lys 12 or Lys 21 residues, showed high biological activity in vitro, which is similar to that of hGRF1-29, and a higher pharmacodynamic response as compared to unmodified GRF molecule.

Limitations: No placebo control reported. Review article — no new primary data.

2004|Advanced drug delivery reviews
PubMed

In conclusion, the use of GH secretagogues plus GHRH is an easy, reliable and accurate way of assessing GH secretion in cranially irradiated patients. Impairment of the GH releasable pool in the irradiated patients, with a maximal provocative test, reflects alterations in the hypothalamic-pituitary unit caused by radiotherapy.

Limitations: No placebo control reported.

2002|The Journal of clinical endocrinology and metabolism
PubMed

These findings indicate that GH is effective in accelerating growth in GH-deficient children who do not show or maintain a satisfactory response to treatment with GHRH. In addition, they suggest that the initial response to GH therapy used in this way can be predicted by means of provoc-ative testing.

Limitations: No placebo control reported.

2002|Endocrine
PubMed

Significantly lower peak and area under the curve (AUC) GH concentrations occurred in the irradiated group using 0.15 microg/kg (median peak Irradiated, 4. 5mU/l vs median Controls, 37.4mU/l; P<0.01) and 1.0 microg/kg (median peak Irradiated, 4.8mU/l vs median Controls, 15.2mU/l; P<0.

Limitations: No placebo control reported.

2000|European journal of endocrinology
PubMed

When the light turns blue. (Endocrinology, 1997)

Limitations: No placebo control reported. Review article — no new primary data.

1997|Endocrinology
PubMed

GHRH treatment may increase muscle strength, and it alters baseline relationships between muscle strength and muscle bioenergetics in a manner consistent with a reduced need for anaerobic metabolism during exercise. Thus, an optimized regimen of GHRH administration might attenuate some of the effects of aging on skeletal muscle function in older persons.

Limitations: No placebo control reported.

1997|Metabolism: clinical and experimental
PubMed

On the basis of these results we were able to separate our patients into two groups: a) responders to priming (n = 8), whose GH responses to pharmacological and acute GHRH tests were < 10 ng/ml, with a 12-hour sleep secretion < 3 ng/ml/min. Priming increased the plasma GH response to acute GHRH in all the children in this group (6.0 +/- 2.1 ng/ml to 18.0 +/- 5.4 ng/ml; p < 0.001); b) non-responders to priming (n = 8), whose GH responses to pharmacological and acute GHRH tests were also < 10 ng/ml, with 12-hour sleep secretion < 3 ng/ml/min, but in whom priming with GH did not increase the plasma GH response (5.5 +/- 2.8 ng/ml to 6.2 +/- 2.9 ng/ml; p = NS).(ABSTRACT TRUNCATED AT 250 WORDS).

Limitations: No placebo control reported.

1995|The Journal of pediatric endocrinology
PubMed

GH response to GHRH in HA men was exaggerated compared to SL men, and IGF-I concentration was also significantly increased in the presence of normal levels of IGFBP-3. No differences in TSH or PRL responses were found following TRH.

Limitations: No placebo control reported.

1995|Clinical endocrinology
PubMed

Mean (SD) height velocity (HV) increased from 4.8(0.9)cm/year pre-treatment to 7.2(1.6)cm/year after 12 months of therapy (P = 0.001). The children growing slowly (HV or = 25th centile) before treatment.

Limitations: No placebo control reported.

1994|Clinical endocrinology
PubMed

The GH response after repeated intranasal administration of GHRH(1-29)-NH2 was sustained; there was no suppression of GH secretion during the night following a day when GHRH(1-29)-NH2 had been given three times intranasally. Based on these findings and the obvious convenience of intranasal administration compared with injections, it would be justified to test intranasal therapy for treatment of short stature in children with GH deficiency caused by hypothalamic damage.

Limitations: No placebo control reported.

1993|Acta paediatrica (Oslo, Norway : 1992). Supplement
PubMed

We have shown this to be an effective therapy for some short, slowly growing children. Further studies are required to establish the optimal dosage regimen.

Limitations: No placebo control reported.

1990|Clinical endocrinology
PubMed

Early studies also indicate that long-term therapy with subcutaneous GHRH may increase growth velocity in some of these children. It is concluded that analogues of GHRH are useful in the investigation of the hypothalamopituitary axis, and may be important in the therapy of short stature.

Limitations: No placebo control reported. Review article — no new primary data.

1986|Clinics in endocrinology and metabolism
PubMed

Community Outcomes

Share Your Experience

Sign in to report your outcomes and help the community learn.

Sign In to Report

Community Data Coming Soon

Aggregate community outcomes will be displayed here once we have more reports. Be one of the first to share your experience!

Outcomes are self-reported and unverified. They represent individual experiences and may not reflect typical results.

Important Warnings

  • Requires daily injections
  • Effects diminish if not taken at bedtime
  • May cause flushing or headache
  • Not as potent as direct GH administration

Where to Get Sermorelin

Licensed Compounding Pharmacy

Requires a prescription from a licensed provider. Compounding pharmacies can prepare custom formulations of Sermorelin tailored to your prescribed dose.

Find a Provider

Telehealth Consultation

Get evaluated by a licensed physician online. Many telehealth providers specialize in peptide therapy and can prescribe Sermorelin if clinically appropriate.

Get a Consultation

This page contains affiliate links to licensed providers. We may earn a commission at no cost to you. Learn more

Avoid unlicensed vendors. We only link to licensed, regulated providers. Never purchase peptides from "research chemical" vendors or unlicensed sources. These products may be contaminated, mislabeled, or illegal.

Trusted Voices

X/Twitter accounts discussing this peptide

Related Peptides