What Are Peptides?
Peptides are short chains of amino acids linked by peptide bonds. Unlike proteins, which contain 50+ amino acids, peptides typically contain 2-50 amino acids. This smaller size allows peptides to be absorbed more easily and exert specific biological effects.
Your body naturally produces thousands of peptides that regulate processes like hormone release, tissue repair, and immune function. Research peptides are synthetic versions designed to mimic or enhance these natural processes.
Key Distinction
Peptides work by signaling—they trigger your body's own mechanisms rather than introducing foreign compounds. This is why they often have favorable safety profiles compared to synthetic drugs.
Key Peptide Categories
Tissue Repair Peptides
BPC-157, TB-500 — Focus on healing, recovery, and tissue regeneration
Growth Hormone Secretagogues
Ipamorelin, CJC-1295, Tesamorelin, Sermorelin — Stimulate natural GH release
Metabolic Peptides
GLP-1 agonists (Semaglutide, Tirzepatide) — Regulate appetite and metabolism
Cognitive Peptides
Selank, Semax — Research on cognitive enhancement and neuroprotection
BPC-157 Deep Dive
BPC-157 (Body Protection Compound-157) is a synthetic peptide derived from a protein found in human gastric juice. Research has explored its effects on tissue healing, gut health, and inflammation.
Research Findings
- Animal studies show accelerated tendon and ligament healing
- May support gut barrier integrity and reduce inflammation
- Research suggests neuroprotective properties
Limitation
Most BPC-157 research is in animal models. Human clinical trials are limited, though anecdotal reports from practitioners are generally positive.
TB-500 Deep Dive
TB-500 is a synthetic version of Thymosin Beta-4, a naturally occurring peptide present in nearly all human cells. It's primarily researched for wound healing and tissue repair applications.
Mechanism of Action
- Promotes cell migration to injury sites
- Supports new blood vessel formation (angiogenesis)
- Reduces inflammation at cellular level
Growth Hormone Peptides
Growth hormone secretagogues stimulate your pituitary gland to release more growth hormone naturally. This differs from exogenous GH administration, which can suppress natural production.
Ipamorelin
Selective GHRP with minimal hunger/cortisol effects. Often paired with CJC-1295.
CJC-1295
GHRH analog that extends GH pulse duration. Works synergistically with GHRPs.
Tesamorelin
FDA-approved GHRH analog. Research on visceral fat reduction and IGF-1 elevation.
Sermorelin
Synthetic GHRH (first 29 amino acids). Gentler option often used in TRT clinics.
Safety Considerations
Provider Selection
If you're considering peptides with a healthcare provider, look for these qualities:
- Third-party testing certificates (COA) available
- Medical oversight and monitoring protocols
- Clear dosing guidance and educational resources
- Transparent sourcing and compounding practices