Sermorelin

Sermorelin acetate is a 29-amino-acid synthetic peptide corresponding to the biologically active fragment of native growth-hormone-releasing hormone (GHRH).¹ It binds GHRH receptors on the anterior pituitary and stimulates the gland to release its own growth hormone in a pulsatile, physiological pattern — the same pattern the body uses naturally during deep sleep.²

How it differs from HGH

Exogenous human growth hormone (HGH) bypasses the pituitary entirely, delivering GH directly to circulation. That produces non-physiological serum levels, suppresses the body's own GH axis through negative feedback, and carries a known risk profile (insulin resistance, fluid retention, carpal tunnel, possible accelerated growth of pre-existing malignancy).³ Sermorelin works upstream — it tells your pituitary to produce GH on a natural rhythm and remains subject to normal regulatory feedback, which is why the risk profile is meaningfully lower.²

Who it is for

Sermorelin is indicated for adults with documented age-related decline in GH/IGF-1 and symptoms suggestive of adult growth-hormone insufficiency: poor recovery, deteriorating body composition, sleep fragmentation, low energy. The standard workup is baseline IGF-1, often with a GHRH/arginine stimulation test if clinical suspicion is high.⁴ Patients with active malignancy, untreated retinopathy, or significant cardiovascular disease should be evaluated case-by-case before treatment.

Dosing + administration

Typical adult protocol is 200–500 mcg subcutaneously at bedtime, five to seven nights per week. Bedtime dosing aligns with the body's natural overnight GH pulse, which produces the most consistent IGF-1 response.² Patients are typically reassessed at 3 and 6 months with IGF-1 trends and subjective symptom scoring.

What to expect

• Sleep quality often improves within 2–4 weeks.
• Recovery from exercise and body-composition changes follow over 3–6 months.
• IGF-1 should rise into a normal-for-age range — not above. Supraphysiological IGF-1 is a target avoided in this protocol.
• Side effects are typically mild — injection-site soreness, occasional flushing, transient headache.