Peptides are naturally occurring chains of amino acids in the body that play key roles in processes such as recovery, wound healing, inflammation management, immunity, and weight loss. Synthetic peptide products designed for injection mimic these natural compounds to support these bodily functions.

Peptides are short chains of amino acids—the same building blocks that form proteins. These molecules occur naturally throughout the body and act as signaling compounds that help regulate many important biological processes, including metabolism, hormone balance, immune function, inflammation control, tissue repair, and cellular communication.

Because peptides play such a critical role in human physiology, scientists have developed synthetic peptide medications that mimic or enhance these natural signals. When used therapeutically under medical supervision, peptide-based medications can target very specific biological pathways, which is why they have become an important part of modern medical treatment.

Over the past several decades, a growing number of peptide-based medications have received FDA approval for the treatment of various conditions, including hormonal disorders, cardiovascular disease, metabolic conditions, and certain cancers.

Several peptide medications are currently FDA-approved and widely used in clinical medicine.

• Leuprolide
  Used to treat hormone-responsive conditions such as prostate cancer, endometriosis, uterine fibroids, and central precocious puberty.
• Bivalirudin
  An anticoagulant peptide used during cardiovascular procedures such as angioplasty to help prevent blood clots.
• Vasopressin
  A naturally occurring peptide hormone used to treat diabetes insipidus and to support blood pressure in certain cases of severe vasodilatory shock.
• Desmopressin
  A synthetic version of vasopressin used to treat central diabetes insipidus, certain bleeding disorders, and nighttime bedwetting.
• Goserelin
  A peptide therapy used primarily for prostate cancer, breast cancer, and some benign gynecological conditions.
• Oxytocin
  A naturally occurring peptide hormone commonly used in obstetrics to induce labor and strengthen uterine contractions during childbirth.
• Semaglutide
  A GLP-1 receptor agonist peptide used for the treatment of type 2 diabetes and chronic weight management.
• Tirzepatide
  A dual GIP and GLP-1 receptor agonist peptide used to help regulate blood sugar and support weight management.
• Liraglutide
  Another GLP-1 peptide medication used for diabetes management and weight control.

These medications highlight the growing importance of peptide-based therapies across many areas of medicine.

Beyond FDA-approved peptide drugs, researchers continue to study additional peptides for their potential roles in metabolism, immune function, tissue repair, and cellular signaling.

In recent regulatory updates, several peptides that had previously been restricted may again become eligible for compounding by licensed pharmacies under physician prescription, pending final regulatory review.

Examples of peptides currently being studied or expected to become available again through regulated compounding pathways include:

• BPC-157 – A peptide fragment studied for its potential role in tissue repair and gut health.
• Thymosin Beta-4 (TB-500) – A peptide involved in cellular migration and tissue healing processes.
• Thymosin Alpha-1 – A peptide that has been studied for immune system modulation.
• GHK-Cu – A copper-binding peptide studied for its role in collagen production and skin regeneration.
• AOD-9604 – A modified peptide fragment originally investigated for its effects on fat metabolism.
• CJC-1295 and Ipamorelin – Peptides that stimulate the body’s natural growth hormone signaling pathways.
• KPV – A small anti-inflammatory peptide fragment derived from alpha-MSH.
• MOTS-C – A mitochondrial-derived peptide currently being researched for metabolic health and cellular energy regulation.
• Semax and Selank – Peptides studied for neurological and cognitive effects.