Growth Hormone Secretagogues

MK-677 (Ibutamoren): The Oral Growth Hormone Secretagogue That Changed the Game

The Peptide Index

Published on: 06/02/2026

Complete MK-677 (Ibutamoren) guide covering ghrelin receptor mechanisms, clinical trial evidence, honest safety assessment including insulin sensitivity concerns, dosing protocols, and stacking strategies.

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Sermorelin: The Original Growth Hormone Releasing Peptide That Still Holds Up in 2025

The Peptide Index

Published on: 05/02/2026

Complete Sermorelin guide covering GHRH mechanisms, 2025 GLP-1 muscle preservation protocols, dosing, stacking strategies, and honest comparison to CJC-1295.

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GHRP-6: The Original Appetite-Amplifying Growth Hormone Secretagogue

The Peptide Index

Published on: 28/01/2026

Comprehensive guide to GHRP-6, the original growth hormone releasing peptide. Covers the unique appetite-stimulating mechanism, clinical research, dosing protocols, comparison to newer GHRPs, and strategic use for bulking phases.

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Hexarelin: The Cardiac Protector Among Growth Hormone Secretagogues

The Peptide Index

Published on: 27/01/2026

Comprehensive guide to Hexarelin, the only GH secretagogue with direct cardiac protection. Covers dual mechanism (GHS-R + CD36), dosing protocols, cycling requirements, stacking strategies, and cardiovascular research evidence.

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Tesamorelin: Complete Guide to the FDA-Approved Visceral Fat Destroyer

The Peptide Index

Published on: 12/01/2026

Complete Tesamorelin guide covering the only FDA-approved peptide for visceral fat reduction. Clinical trial evidence, NAFLD benefits, protocols, and trusted sources.

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CJC-1295/Ipamorelin: Complete Guide to Growth Hormone Optimization

The Peptide Index

Published on: 09/01/2026

A synergistic peptide combination that stimulates natural growth hormone production through complementary mechanisms. This guide covers the science, protocols, timing strategies, and realistic expectations for GH optimization research.

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