What are the best peptides for weight loss?

Based on current research, the top peptides for weight loss include Semaglutide, Tirzepatide, AOD-9604 and 8 more. Each has a different evidence level and mechanism of action. Check individual peptide profiles for detailed research citations.

Are any weight loss peptides FDA approved?

Yes, 8 peptides in the weight loss category are FDA approved: Semaglutide, Tirzepatide, Liraglutide, Exenatide, Dulaglutide, Setmelanotide, Pramlintide, Tesofensine. The remaining peptides have varying levels of preclinical or clinical evidence.

How are peptide evidence levels determined?

PeptideScholar uses a four-tier evidence grading system: Level A (FDA Approved) indicates robust clinical evidence and regulatory approval. Level B (Human Studies) means human clinical data exists but the peptide is not FDA approved for this indication. Level C (Preclinical) means only animal or in vitro studies are available. Level D (Limited Data) means very limited or no published evidence exists.

Best Peptides for Weight Loss

Peptides used or studied for weight loss and fat reduction. Includes FDA-approved semaglutide, tirzepatide, and the research peptide AOD-9604.

Approved Category Routing

Approved entries in the Weight Loss category

Semaglutide

Semaglutide is currently modeled on this site as an approved treatment path for: Type 2 diabetes mellitus; chronic weight management in adults with obesity or overweight with comorbidities. Brand names in the current dataset: Ozempic, Wegovy, Rybelsus.

Tirzepatide

Tirzepatide is currently modeled on this site as an approved treatment path for: Type 2 diabetes mellitus; chronic weight management in adults with obesity or overweight with comorbidities. Brand names in the current dataset: Mounjaro, Zepbound.

Liraglutide

Liraglutide is currently modeled on this site as an approved treatment path for: Type 2 diabetes mellitus (Victoza); chronic weight management in adults with BMI ≥30 or ≥27 with comorbidities (Saxenda). Brand names in the current dataset: Victoza, Saxenda.

Exenatide

Exenatide is currently modeled on this site as an approved treatment path for: Type 2 diabetes mellitus (adjunct to diet and exercise). Brand names in the current dataset: Byetta, Bydureon BCise.

Dulaglutide

Dulaglutide is currently modeled on this site as an approved treatment path for: Type 2 diabetes mellitus; cardiovascular risk reduction in adults with T2D and established CV disease or multiple risk factors. Brand names in the current dataset: Trulicity.

Setmelanotide

Setmelanotide is currently modeled on this site as an approved treatment path for: Chronic weight management in adult and pediatric patients aged 6 years and older with obesity due to POMC, PCSK1, or LEPR deficiency, or Bardet-Biedl syndrome. Brand names in the current dataset: Imcivree.

Validation Note

This block reflects the site's current structured treatment data and internal routing logic. It does not replace checking current labeling, payer rules, or local prescribing conditions.

View Semaglutide routing View Tirzepatide routing View Liraglutide routing View Exenatide routing View Dulaglutide routing View Setmelanotide routing Use provider matcher

Peptides

Products to help manage common side effects and support nutrition during treatment.

LMNT Electrolyte Packets

Sodium-focused electrolytes to prevent dehydration and fatigue common in early GLP-1 therapy.

$30–45View on Amazon

High-Protein Shakes (30g)

Convenient protein shakes to maintain muscle mass on reduced GLP-1 caloric intake.

$28–42View on Amazon

Metamucil Fiber Supplement

Soluble fiber powder to manage constipation and GI side effects during GLP-1 treatment.

$20–30View on Amazon

Vitamin B12 (Methylcobalamin 1000mcg)

GLP-1 agonists can reduce B12 absorption over time — methylcobalamin is the most bioavailable form.

$10–20View on Amazon

Ginger Chews for Nausea

Natural nausea relief for the dose-escalation adjustment period, particularly weeks 1–4.

$8–15View on Amazon

Unflavored Whey Protein Isolate

Preserve lean mass without excess carbs or calories when appetite is suppressed.

$35–60View on Amazon

Amazon affiliate links; we may earn a small commission at no extra cost to you. See our disclosure.

Progress Tracking Tools

Monitor weight, body composition, and nutrition to maximize results.

Smart WiFi Body Scale

Tracks BMI, body fat %, and muscle mass — essential for monitoring GLP-1 progress over time.

$30–60View on Amazon

Digital Kitchen Food Scale

Precise gram-level portion tracking helps maximize weight loss results on GLP-1 therapy.

$10–20View on Amazon

Protein Shaker Bottle Set

Leak-proof mixing bottles for protein shakes — supports consistent protein intake on a smaller appetite.

$12–25View on Amazon

Amazon affiliate links; we may earn a small commission at no extra cost to you. See our disclosure.

Weight Loss Peptides: FAQ

Medical Disclaimer

This content is for informational and educational purposes only and does not constitute medical advice, diagnosis, or treatment recommendations.

Always consult a qualified healthcare provider before starting, stopping, or modifying any treatment. Do not disregard professional medical advice based on information found on this site.

No claims of therapeutic efficacy are made for substances that are not FDA-approved for the discussed indications. Research citations reflect published findings and do not imply endorsement.