What Is Peptide Therapy?

What Are Peptides?

Peptides are short chains of amino acids — typically between 2 and 50 amino acids in length. They act as signaling molecules in the body, triggering specific biological responses. Unlike larger proteins, peptides are small enough to be absorbed efficiently and can target specific receptors with high precision.

How Do Peptides Work?

Peptides work by binding to specific receptors on cell surfaces, triggering cascades of biological activity. Different peptides target different systems — some stimulate growth hormone release, others promote tissue healing, reduce inflammation, modulate the immune system, or regulate appetite and metabolism.

• ✓Growth hormone secretagogues (CJC-1295, Ipamorelin) stimulate the pituitary gland to release GH naturally
• ✓Healing peptides (BPC-157, TB-500) accelerate tissue repair by promoting angiogenesis and reducing inflammation
• ✓GLP-1 agonists (Semaglutide, Tirzepatide) regulate appetite and insulin sensitivity for weight management
• ✓Immune peptides (Thymosin Alpha-1, LL-37) modulate immune function and have antimicrobial properties
• ✓Nootropic peptides (Selank, Semax) enhance cognitive function through neurotransmitter modulation

Clinical Applications

Peptide therapy is used across a wide range of clinical applications in functional and integrative medicine. Common applications include anti-aging protocols, injury recovery, weight management, hormone optimization, cognitive enhancement, immune support, and gut healing.

Administration Methods

Most therapeutic peptides are administered via subcutaneous injection using an insulin syringe. Some peptides are available in oral, sublingual, nasal spray, or topical forms. The route of administration depends on the specific peptide and its bioavailability requirements.

• ✓Subcutaneous injection — most common, highest bioavailability for most peptides
• ✓Oral/sublingual — available for some peptides like BPC-157 (oral), though bioavailability may be lower
• ✓Intranasal — used for cognitive peptides like Selank, Semax, and some GH secretagogues
• ✓Topical — GHK-Cu and some healing peptides can be applied directly to skin

What to Expect

Results from peptide therapy vary by peptide and individual. Growth hormone peptides typically show effects within 4-8 weeks. Healing peptides like BPC-157 may show improvement within 1-2 weeks. Weight management peptides like Semaglutide typically show significant results within 4-12 weeks. Most protocols run 8-16 weeks with cycling periods.

Safety Considerations

Peptide therapy should always be supervised by a qualified healthcare provider. Key safety considerations include sourcing peptides from reputable compounding pharmacies, proper reconstitution and storage, monitoring relevant lab markers, and being aware of contraindications and potential interactions with other medications.