HGH Peptides vs. Human Growth Hormone: What's the Difference?

HGH Peptides vs. Synthetic HGH: Side-by-Side

Best HGH Peptides by Goal

For anti-aging and general GH optimization: Sermorelin (GHRH analog; FDA-approved history; well-studied) or the combination of ipamorelin + CJC-1295. Ipamorelin is ghrelin-receptor based (GHRP) and CJC-1295 is GHRH-based — combining both pathways produces more robust GH release than either alone. This is the most commonly prescribed combination.

For visceral fat reduction: Tesamorelin — the only GH peptide with FDA approval and clinical trial data specifically showing visceral fat reduction. Phase II data in non-HIV obesity shows similar visceral fat reductions to the HIV trial data.

For sleep and recovery: Ipamorelin alone at lower doses (100–200 mcg before sleep) produces a clean GH pulse timed to slow-wave sleep without the cortisol/prolactin elevation seen with GHRP-2 and GHRP-6.

For maximum GH output (research/performance): CJC-1295 with DAC (Drug Affinity Complex) provides prolonged GH elevation over 1–2 weeks per injection — used when sustained, not pulsatile, GH elevation is desired.

Who Actually Needs Synthetic HGH

Synthetic HGH (somatropin) has legitimate medical uses:

• Adult GH deficiency: Confirmed by IGF-1 testing + GH stimulation testing showing inadequate GH response. Symptoms include increased visceral fat, decreased muscle mass, fatigue, and reduced quality of life. HRT with somatropin is the standard of care.
• Pediatric growth failure: The original and clearest indication.
• Wasting conditions: HIV wasting, short bowel syndrome, and similar catabolic states.

For people without confirmed GH deficiency who want GH optimization for anti-aging or performance, GH peptides are a more appropriate and accessible option — they work with the body's feedback systems rather than overriding them.

Monitoring on HGH Peptides

Key labs to monitor when using GH secretagogue peptides:

• IGF-1: The main biomarker of GH activity. Target range is typically the upper third of the age-appropriate reference range (not above-normal). IGF-1 should be checked at baseline and 6–8 weeks into protocol.
• Fasting glucose / insulin: GH counteracts insulin. People with insulin resistance or prediabetes may see glucose worsen on GH peptides. Monitor with fasting glucose and HOMA-IR.
• Cortisol and prolactin: GHRP-2 and GHRP-6 (older GH peptides) significantly elevate cortisol and prolactin — a reason ipamorelin is preferred. Ipamorelin does not significantly affect these hormones.