Understanding what peptides are, how peptide medicines differ, and why evidence, regulatory status and medical evaluation matter.
Peptides are short chains of amino acids. In the body, many peptides function as signaling molecules involved in processes such as metabolism, appetite, hormone signaling and tissue function. The word peptide describes a broad biochemical category—not a single treatment and not a guarantee that a product is effective or appropriate.
Some peptide-based medicines have undergone FDA review for specific indications. Other substances promoted online as “peptide therapy” may be investigational, unapproved, or sold in compounded preparations. FDA notes that compounded drugs are not FDA-approved and are not reviewed before marketing for safety, effectiveness or quality. Read FDA guidance on compounded drugs.
Patients often hear names such as tesamorelin, sermorelin, CJC-1295, ipamorelin or BPC-157 grouped together. These compounds differ substantially in mechanism, evidence and regulatory status. For example, tesamorelin has an FDA-approved indication for reducing excess abdominal fat in adults with HIV-associated lipodystrophy, while the FDA-approved label specifically states that it is not intended for weight-loss management.
Our educational library separates established indications from investigational or unapproved uses. Start with the Peptide Therapy Los Angeles hub, then review our Peptide Therapy Evidence & Regulatory Status Guide.
Learn about growth hormone-releasing peptides, sermorelin, and CJC-1295 / ipamorelin.
Review the evidence and limitations around BPC-157 safety and evidence before interpreting online claims about injury recovery or tissue repair.
For patients primarily interested in weight management, compare peptide discussions with established GLP-1 weight-loss treatment and our medical weight-loss program.
A comprehensive evaluation can help determine whether symptoms or body-composition concerns may relate to sleep, nutrition, medication effects, thyroid disease, metabolic abnormalities, hormone disorders or other medical conditions. Treatment decisions should be based on diagnosis, evidence, contraindications and the individual patient’s goals—not on a peptide name trending online.
Our comprehensive initial physician evaluation is $450. Follow-up physician visits are $250 and are used to review progress, laboratory results when appropriate, treatment response, side effects and clinically appropriate adjustments.
Board Certified in Internal Medicine. This page is educational and does not replace individualized medical care. Photo: National Cancer Institute / Unsplash.
