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J Biol Chem 289(29):1990719916

(5) CJC-1295 DAC is thought to elevate levels of IGF-1 by increasing growth hormone production, which in turn may bind to receptors on liver cells, potentially triggering a cascade of intracellular signaling processes

2018 Jan;47(1):26-42

Since that time, other options have come on the market, including the Eli Lilly drug Zepbound (tirzepatide), which received FDA approval in November 2023

Tanaka T, Camerini D, Seed B, Torimoto Y, Dang NH, Kameoka J, et al

Vitamin B12 Injections: The Direct Approach Vitamin B12 injections deliver the nutrient directly into muscle tissue, bypassing the digestive system entirely