If you’ve spent any time researching weight loss options in the last year or two, you’ve probably run into the word “peptide” more than you expected. From GLP-1 medications to growth hormone secretagogues and fat-burning fragments, various peptides like these are being marketed by wellness clinics across Minnetonka and the greater Twin Cities. The problem is that the term “peptide” covers a huge range of substances, and the clinical evidence behind each one varies enormously.
So if you’re weighing your options for weight loss, here’s what you should know.
What Is a Peptide?
A peptide is a short chain of amino acids that acts as a signaling molecule in the body. Your body produces thousands of them naturally. GLP-1 is a peptide, and so are CJC-1295, ipamorelin, AOD-9604, and BPC-157. Calling something a “peptide” tells you about its molecular structure, not whether it’s safe, effective, or backed by research. That distinction matters, because the evidence behind these compounds is not created equal.
GLP-1 Medications: FDA-Approved and Clinically Proven
GLP-1 (glucagon-like peptide-1) receptor agonists mimic a hormone your small intestine naturally produces after you eat. They slow gastric emptying so you feel full longer, regulate blood sugar, and reduce appetite at a neurological level. The result is consistent, measurable weight loss without the constant sensation of fighting hunger.
What sets GLP-1 medications apart from other weight loss peptides is the depth of evidence behind them. The STEP 1 clinical trial, published in The New England Journal of Medicine, enrolled nearly 2,000 adults with overweight or obesity and found that participants using semaglutide 2.4 mg lost an average of 14.9% of their body weight over 68 weeks. A 2024 network meta-analysis published in Metabolism, which reviewed 27 randomized controlled trials and over 15,500 patients with obesity or overweight, confirmed that GLP-1 receptor agonists produce significant weight loss and waist circumference reduction across multiple formulations. That level of scrutiny is rare in the peptide world.
At Skin Artisans, our GLP-1 medical weight loss program is overseen by Rachel Snyder, APRN, CNP, and Dr. Allison Heimer, our Hormone Optimization and Medical Weight Loss Specialists. The program includes lab work, monthly consultations (in-person or virtual), dosing adjustments, and behavioral coaching to help patients build sustainable habits alongside the medication. Most patients can expect to lose about one pound per week when pairing GLP-1 with a healthy lifestyle.
The Other Peptides You Keep Hearing About
Here’s where it gets murky. Several peptides are widely marketed for weight loss at wellness clinics and through online providers, but the research backing them looks very different from what supports GLP-1 medications.
CJC-1295 and Ipamorelin
These are growth hormone secretagogues, meaning they stimulate your pituitary gland to release more growth hormone. In theory, elevated growth hormone supports fat metabolism and lean muscle preservation. Practitioners often prescribe them together as a “stack.”
The appeal is understandable, especially for patients who want to lose fat without losing muscle mass. But here’s the reality: no large-scale randomized human trials have demonstrated that CJC-1295 and ipamorelin produce meaningful, sustained weight loss. The studies that exist are small, often industry-funded, and focused on growth hormone levels rather than actual body weight outcomes. Neither compound is FDA-approved for weight loss or obesity.
AOD-9604
AOD-9604 is a fragment of human growth hormone that was engineered to isolate the fat-burning properties of GH without affecting blood sugar or triggering growth effects. It generated some excitement in early animal studies, and it’s marketed aggressively as a “fat-burning peptide.”
The human data, however, has been inconsistent. Clinical trials have not shown reliable, significant fat loss in human subjects. The FDA has not approved AOD-9604 for weight loss, and the agency has issued warnings about its sale as an unapproved drug.
BPC-157
BPC-157 (body protection compound-157) is derived from a protein found in human gastric juice. It’s primarily known as a healing and gut-health peptide, not a weight loss agent. Some practitioners prescribe it alongside GLP-1 medications to help manage the gastrointestinal side effects (nausea, bloating) that some patients experience during the early weeks of GLP-1 treatment.
There is no clinical evidence that BPC-157 causes fat loss on its own. It may play a supportive role in a broader treatment plan, but it is not a weight loss peptide and should not be marketed as one. It is also not FDA-approved.
Sermorelin
Sermorelin stimulates natural growth hormone production and is FDA-approved, but only for diagnosing and treating growth hormone deficiency in children. It is sometimes used off-label in adults to support body composition and anti-aging goals. While some patients report improvements in energy and body composition, the evidence for direct weight loss is limited and far weaker than what exists for GLP-1 receptor agonists.
A Quick Comparison
| GLP-1 Medications | CJC-1295 + Ipamorelin | AOD-9604 | BPC-157 | |
| Primary mechanism | Appetite regulation, blood sugar control, slowed gastric emptying | Growth hormone stimulation | GH-fragment fat metabolism | Gut healing, tissue repair |
| FDA-approved for weight loss | Yes | No | No | No |
| Large human clinical trials | Yes (thousands of participants) | No | Limited, inconsistent results | No |
| Documented weight loss | ~15% body weight in one year (STEP trial) | Anecdotal | Not reliably demonstrated in humans | None |
Where You Get Treatment Matters as Much as What You Take
Peptides purchased online or from unregulated compounding pharmacies carry real risks: inconsistent dosing, contamination, and a complete absence of medical oversight. Even GLP-1 medications, which have an excellent safety profile when properly managed, require lab monitoring, dosing adjustments, and ongoing follow-up to produce the best results safely.
At Skin Artisans in Minnetonka and our Edina and Woodbury locations, medical weight loss isn’t a prescription handed off without context. Our practitioners start every patient with comprehensive lab work and a detailed health history. They monitor progress monthly, adjust medication as your body responds, and provide guidance on nutrition and behavioral patterns that support long-term success.
For patients whose weight resistance is connected to hormonal imbalance, our providers also offer BioTE bioidentical hormone replacement therapy, which can be combined with GLP-1 treatment for a more complete approach. When your hormones are optimized, your metabolism responds more effectively to weight loss medication.
Skin Artisans was founded by the board-certified plastic surgeons of Edina Plastic Surgery in 1991 and has served over 50,000 patients. We’ve been consecutively recognized as Best Med Spa in Edina by Edina Magazine and hold a five-star Google rating with hundreds of reviews. When it comes to your health, evidence and expertise should guide every decision.
Tired of Guessing? Get a Weight Loss Plan That’s Backed by Real Science.
Book your medical weight loss appointment today.
Minnetonka: (612) 930-1111
Woodbury: (651) 252-1999
Edina: (952) 767-3163
