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Eric Topol of Scripps Research Translational Institute was more direct: "These peptides have no data to support their safety and efficacy." The clinical proponents argue that the FDA's safety concerns immunogenicity risk, impurity risk, organ toxicity are theoretically valid but speculative in practice

TB-500 is reported with a longer serum half-life (often cited around 2.53 hours after subcutaneous administration) and prolonged tissue availability, which is why research protocols conventionally model it on a less frequent schedule

The upcoming SYNCHRONIZE-2 trial will focus specifically on individuals with Type 2 diabetes, aiming to assess the drugs efficacy and safety in this population

The rationale for combining BPC-157 and TB-500 stems from their distinct but complementary mechanisms