Muscle Growth
Muscle Growth Research Peptides
Research peptides for muscle growth and body composition optimization.
About Muscle Growth Peptides
Explore our selection of muscle growth research peptides from Phiogen. All products are for research use only.
Research Applications
These peptides have been studied in various research contexts related to muscle growth.
Mechanism of Action
The GH Axis Pathway
Peptide Binds Receptor
GHRH-R or GHSR-1a on pituitary somatotrophs
GH Pulse Released
Amplitude + frequency both increase
IGF-1 Secretion
Liver and peripheral tissue respond
Muscle Adaptation
Satellite cell activation & myofibril growth
Two Complementary Classes
GHRH Analogues vs Ghrelin Mimetics
GHRH Analogues
Increase GH pulse amplitude
CJC-1295 (with DAC)
6–8 day half-life via albumin binding. Sustained baseline GH elevation.
CJC-1295 (no DAC)
Short-pulse physiological rhythm. Mimics natural GHRH bursts.
Sermorelin Acetate
Gentle, well-studied secretagogue. Strong safety profile in research.
Tesamorelin
Documented visceral fat reduction + muscle maintenance.
Ghrelin Mimetics
Increase GH pulse frequency
Ipamorelin
Most selective class member. Minimal cortisol or prolactin elevation.
GHRP-2
Stronger GH spike. Stimulates appetite — useful for mass-building phases.
MK-677 (Oral)
24-hour GH + IGF-1 elevation. Bioavailable oral capsule form.
Research Finding
Combination Protocols Produce Synergistic Results
Pairing a GHRH analogue with a ghrelin mimetic stimulates both GH pulse amplitude and frequency simultaneously — producing effects neither compound achieves in isolation.
1×
GHRH Alone
baseline GH release
1.5×
Ghrelin Alone
above baseline
4–6×
Combined Stack
synergistic release
Supporting Compounds
Recovery & Anabolic Support Peptides
BPC-157
Tendon & ligament repair, angiogenesis, gut health
TB-500
Systemic cell migration, actin polymerization, anti-inflammatory
IGF-1 LR3
Direct myocyte signaling, satellite cell activation
ACE-031
Myostatin inhibition — genetic ceiling bypass in research
Shop Muscle Growth Peptides
Research-grade quality — COA verified. For research use only.
Shop Research PeptidesMuscle Growth Peptides (30)
15-amino acid body protection compound with extensive tendon, muscle, gut, and nerve repair research.
GHRH analogue producing a short, physiological GH pulse.
Highly selective ghrelin receptor agonist with minimal cortisol or prolactin elevation.
Synthetic Thymosin Beta-4 promoting actin polymerization, cell migration, and AKT pathway activation for systemic tissue repair.
Recombinant fusion protein inhibiting myostatin and activin to remove the biological brake on skeletal muscle growth.
AMPK activator that mimics the metabolic effects of exercise.
High-dose CJC-1295 (no DAC) for extended GH secretagogue research.
Long-acting GHRH analogue with Drug Affinity Complex extending half-life to 6-8 days via albumin binding.
Ghrelin receptor agonist that triggers a strong growth hormone pulse.
GnRH analogue that stimulates pituitary LH and FSH secretion.
Potent GHRP that produces one of the strongest GH pulses among secretagogues.
Long-acting IGF-1 analogue that bypasses hepatic clearance to act directly on muscle tissue.
Ipamorelin 5mg + Tesamorelin 10mg body composition stack.
Classic GH stack: CJC-1295 5mg (GHRH) + Ipamorelin 5mg (ghrelin mimetic).
Alternate batch CJC-1295 5mg + Ipamorelin 5mg growth hormone stack.
Ipamorelin 3mg + Tesamorelin 10mg blend targeting visceral fat reduction and lean mass.
Higher-dose Ipamorelin 5mg + Tesamorelin 10mg blend for comprehensive GH and visceral fat research.
High-dose Kisspeptin-10 for extended HPG axis research.
Upstream HPG axis activator that stimulates GnRH release to drive LH and testosterone production.
Injectable L-Carnitine at 400mg/mL concentration.
Five-vial pack of L-Carnitine 600mg/mL for extended research.
High-concentration injectable L-Carnitine at 600mg/mL.
PEGylated Mechano Growth Factor activates satellite cells for muscle repair and hypertrophy.
High-dose Sermorelin for prolonged GHRH research studies.
29-amino acid GHRH analogue that stimulates natural GH release from the pituitary.
GHRH analogue clinically proven to reduce visceral/abdominal fat.
High-dose Tesamorelin for extended visceral fat and GH axis research.
Peptide bioregulator targeting testicular and male reproductive tissue.
Peptide Cycles
Try a Pre-Built Research Cycle
Synergistic combinations of muscle growth peptides.
Frequently Asked Questions
What are Muscle Growth peptides?
Are these peptides safe?
Start Your Muscle Growth Research
30 research peptides available — COA verified, research grade.
For research use only. Not for human consumption. Consult a physician.