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The rationale is mechanistic rather than additive marketing language: a GHRH analog primes the pituitary while a ghrelin mimetic adds a separate, selective pulse, and researchers study whether the two together change the size or timing of growth hormone release

That is biology

Or is it primarily a tool for weight loss

And even though BPC-157 is gaining more and more attention from doctors, it is still not authorized by the FDA, and numerous unanswered issues about its long-term effects demand further investigation

Nelson, S

Ricciuti B, Genova C, and De Giglio A, et al (2019) Impact of immune-related adverse events on survival in patients with advanced non-small cell lung cancer treated with nivolumab: long-term outcomes from a multi-institutional analysis J Cancer Res Clin Oncol 145 (2) 479485 82