Peptide therapy is one of the most rapidly growing areas of regenerative and functional medicine — yet for most people, the word "peptide" still draws a blank. That's understandable. Unlike vitamins or hormones, peptides don't have a simple cultural shorthand. But the science behind them is both accessible and compelling, and understanding the basics can help you make an informed decision about whether peptide therapy is right for you.
What Is a Peptide?
A peptide is a short chain of amino acids — the same building blocks that make up proteins. The difference between a peptide and a protein is essentially size: proteins are long, complex chains, while peptides are shorter sequences, typically between 2 and 50 amino acids in length. This smaller size is precisely what makes peptides so biologically useful. They are small enough to bind to specific receptors on the surface of cells and deliver precise molecular signals — telling the body to do something very specific, such as release growth hormone, initiate tissue repair, or modulate inflammation.
A 2022 review in Frontiers in Pharmacology described therapeutic peptides as "highly selective and efficacious" agents that act on specific biological targets, noting that their "high target specificity and low toxicity" make them particularly attractive for clinical use.[1]
How Peptides Differ From Hormones and Steroids
This is one of the most common questions from first-time patients. Peptides are not hormones, and they are not steroids. Hormones are signaling molecules that travel through the bloodstream to produce broad, systemic effects — often by overriding or replacing the body's own production. Steroids are synthetic compounds that mimic hormones and carry well-documented risks with long-term use. Peptides work differently: they act as messengers that stimulate the body's own existing systems, rather than replacing or overriding them. A peptide like CJC-1295, for example, does not introduce growth hormone into the body — it stimulates the pituitary gland to produce more of its own.[2]
The Most Commonly Used Peptides at Nectar Wellness
At Nectar Wellness, we offer several clinically supported peptides, each with a distinct mechanism and application. BPC-157, derived from a protein found in gastric juice, has demonstrated remarkable tissue repair properties in peer-reviewed research. A 2018 review in Current Pharmaceutical Design documented its effects on tendon, ligament, muscle, and gastrointestinal healing, noting that it "promotes the healing of many different wounds" through multiple biological pathways.[3]
GHK-Cu (copper peptide) is a naturally occurring peptide in human plasma that declines significantly with age. Research published in Biomolecules in 2018 found that GHK-Cu stimulates collagen and glycosaminoglycan synthesis, promotes wound healing, and exerts anti-inflammatory and antioxidant effects — making it a compelling option for skin regeneration and systemic anti-aging support.[4]
For those interested in body composition and recovery, the combination of CJC-1295 and Ipamorelin is among the most studied growth hormone secretagogue pairings available. A clinical pharmacology study published in the Journal of Clinical Endocrinology & Metabolism found that CJC-1295 produced dose-dependent increases in growth hormone and IGF-1 levels that were sustained for days after a single injection — a profile that supports its use for recovery, lean muscle preservation, and metabolic health.[2]
How Peptides Are Administered
Most therapeutic peptides are administered via small subcutaneous injections — similar in size and technique to an insulin injection. The needle is very fine, and the injection is typically given in the abdomen or thigh. Many patients self-administer at home after a brief instructional session with their nurse. Some peptides, including certain BPC-157 formulations, are also available as oral capsules, though injectable forms generally offer superior bioavailability for systemic effects.
Are Peptides Safe?
The peptides offered at Nectar Wellness have strong safety profiles supported by clinical and preclinical research. Because they mimic naturally occurring molecules in the body and act through specific receptor pathways, they generally carry a lower risk profile than synthetic hormones or pharmaceutical drugs. That said, all peptide therapies at Nectar Wellness are prescribed and monitored by our clinical team. We conduct a thorough intake assessment before any therapy begins and schedule regular check-ins to assess response and adjust dosing as needed.
"Therapeutic peptides have several advantages over small molecule drugs, including high target specificity and low toxicity, making them a promising class of therapeutics." — Frontiers in Pharmacology, 2022