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[49] Because peptides like Sermorelin are readily destroyed by enzymes in the digestive tract, subcutaneous (sc) or intravenous (iv) injections are the only way to administer the molecule
However, the most important advantage is the very safe profile of BPC (the lethal dose (LD1) could be not achieved) (Seiwerth et al., 2018), emphasized in terms of its physiological role (assessed using in situ hybridization and immunostaining for BPC 157 in the human gastrointestinal mucosa, lung bronchial epithelium, the epidermal layer of the skin, and kidney glomeruli) (Seiwerth et al., 2018)
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It is obvious that the results concerning one enzyme may be totally different if mRNA expression, protein expression or activity is assayed, due to time shifts in the changes among these parameters