How growth hormone works in adults
Growth hormone (GH) is produced by the pituitary gland and plays a role in body composition, muscle mass, fat metabolism, bone density, and recovery. GH levels naturally decline with age - often significantly between the ages of 30 and 60.
Clinically significant growth hormone deficiency (GHD) in adults is a recognized medical condition that can be diagnosed through testing and treated with prescription HGH. However, the physiological decline in GH that comes with normal aging is not the same as a pathological deficiency, and this distinction is central to how prescribing works in the US.
What HGH is and how it is prescribed in the US
Human growth hormone (somatropin) is an FDA-approved prescription medication available under brand names including Norditropin, Genotropin, Humatrope, and others.
In the US, HGH is a Schedule III controlled substance when prescribed for non-approved purposes. Legally, HGH can be prescribed for:
- Adult growth hormone deficiency (diagnosed through testing, typically an IGF-1 panel and stimulation tests)
- Short bowel syndrome
- Wasting related to HIV/AIDS
- Turner syndrome, Prader-Willi syndrome (in children)
- Idiopathic short stature (in children)
Prescribing HGH for anti-aging, body composition enhancement, or athletic performance in adults without a documented deficiency is not an approved use and carries legal risk for the prescribing physician. Any clinic offering HGH for these purposes without proper diagnostic workup should be approached with caution.
Cost without insurance: typically $500-2,000 per month for brand-name HGH.
What sermorelin is and how it differs
Sermorelin is a growth hormone-releasing hormone (GHRH) analogue. Rather than providing exogenous growth hormone directly, it stimulates the pituitary gland to produce and release more of its own GH.
Key differences from HGH:
- Not a controlled substance - sermorelin does not carry the Schedule III restriction of HGH
- Requires an intact pituitary - sermorelin works by stimulating the pituitary, so it will not help patients whose pituitary cannot respond
- More physiological release pattern - the growth hormone released in response to sermorelin follows natural pulsatile patterns rather than the sustained elevation from exogenous HGH
- Typically compounded - sermorelin is prescribed and compounded by 503A pharmacies; it does not have a widely available commercial formulation at the doses used in anti-aging programs
- Lower cost - compounded sermorelin typically runs $150-400 per month, compared to $500-2,000 for brand-name HGH
Related peptides in the same category
Sermorelin is one of several peptides that work on the GHRH pathway. Others you may encounter include:
| Peptide | Mechanism | Notes |
|---|---|---|
| Sermorelin | GHRH analogue | Stimulates pituitary GH release |
| Ipamorelin | GHRP (GH secretagogue) | Often combined with sermorelin |
| CJC-1295 | GHRH analogue (longer acting) | Used in combination protocols |
| Tesamorelin | GHRH analogue | FDA-approved for HIV lipodystrophy |
Ipamorelin and CJC-1295 are frequently prescribed together or combined with sermorelin in multi-peptide protocols. Tesamorelin is FDA-approved for a specific indication and has the most robust clinical trial data among the group.
Which is right for you?
That depends on your situation, your lab results, and your physician's assessment. General considerations:
- If you have documented growth hormone deficiency by clinical testing, you may be a candidate for prescription HGH
- If you are experiencing age-related GH decline without a documented deficiency, GHRH peptides like sermorelin are more appropriate and legally more straightforward to prescribe
- If cost is a factor, compounded sermorelin or ipamorelin programs are substantially less expensive than HGH
- If you want a pulsatile, more physiological GH stimulation pattern, GHRH peptides generally provide that
Questions to ask your physician
Before starting any GH-axis therapy, ask:
- What baseline testing do you require, and what would trigger an HGH prescription vs. a GHRH peptide?
- What is the clinical rationale for this specific protocol given my test results?
- Is the sermorelin or other peptide compounded, and which pharmacy do you use?
- What markers will we track to assess response?
- What is the follow-up schedule, and when should I expect to notice changes?
Find clinics offering sermorelin and growth hormone-related programs across the US. Browse by state: California - Texas - Florida - New York - Arizona.