Boosts growth and appetite: Liver extract and B12 stimulate protein synthesis and improve feed conversion
has voiced support for expanding access to certain peptide therapies, while FDA reviewers have raised concerns about the limited evidence supporting the safety and effectiveness of the seven substances under consideration
Comparative Clinical Efficacy Data AOD-9604 Clinical Development History AOD-9604 underwent clinical development by Metabolic Pharmaceuticals (Australia) in the early 2000s: Phase 1: Demonstrated safety and tolerability in healthy volunteers Phase 2a: Showed modest trends toward fat loss in small cohorts Phase 2b (2007): A larger trial of 536 obese participants failed to demonstrate statistically significant weight loss versus placebo after 24 weeks of treatment Development Discontinued: Following Phase 2b failure, clinical development was halted Semaglutide Clinical Evidence The STEP trial program represents the most comprehensive obesity treatment evidence: STEP 1: 14.9% weight loss vs 2.4% placebo at 68 weeks (n=1,961) STEP 2: 9.6% weight loss in type 2 diabetes patients STEP 3: 16.0% weight loss with intensive behavioral therapy STEP 4: Weight maintenance confirmed with continued treatment SELECT: 20% reduction in major cardiovascular events Evidence Quality Comparison The evidence gap is substantial: Semaglutide: Multiple large Phase 3 trials, FDA approval, real-world data, cardiovascular outcomes AOD-9604: Failed Phase 2b, no Phase 3 completion, no regulatory approval for obesity Safety and Tolerability Profile AOD-9604 Safety Profile: Generally Well-Tolerated: Phase 1/2 trials showed favorable safety No Metabolic Disruption: Did not affect blood glucose, insulin, or IGF-1 levels No GH-Related Effects: No fluid retention, joint pain, or tissue growth seen with full GH Limited Data: Lack of Phase 3 and long-term safety information Semaglutide Safety Profile: GI Events: Nausea (44%), diarrhea (31%), vomiting (24%)typically transient Serious AEs: Pancreatitis risk, gallbladder disease (similar to other weight loss) Boxed Warning: Thyroid C-cell tumors (rodent studies
Pintar JE, Schuller A, Cerro JA, Czick M, Grewal A, Green B
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