The timing, frequency, and extent of senescent cell removal remain open questions (for example, when is it best to clear them? What is the rebound or regenerative consequence?)
In particular, BPC 157-induced endothelial maintenance (Sikiric et al., 1994) and the bypassing key (Vukojevic et al., 2018
Spray administration: Administer a measured amount of the TB-500 nasal spray by gently pressing the applicator, releasing the spray into the subject's nostril
Use of DPP4 inhibitors and GLP-1 receptor agonists and risk of intestinal obstruction: Scandinavian cohort study
Sikiric P, Rucman R, Turkovic B, Sever M, Klicek R, et al
Research-grade chemicals are not meant for human consumption, so patients are left questioning whether quality or authenticity is consistent, which can make it difficult to know whether changes in results are due to the drug, dosing, or the product itself