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modified insulin-like growth factor-1, TB-500, hematide/peginesatide, growth hormone releasing peptides, AOD-9604, etc.) and non-peptidic (selective androgen receptor modulators, hypoxia-inducible factor stabilizers, siRNA, S-107 and ARM036/aladorian, etc.) as well as inorganic (cobalt) nature are considered and discussed in terms of specific requirements originating from physicochemical properties, concentration levels, metabolism, and their amenability for chromatographic-mass spectrometric or alternative detection methods

doi: 10.1007/s12011-013-9705-9 46

On the surface, that makes sense

10.1016/j.gpb.2021.08.001 24

Injection Advantages A small amount of B12 prescribed in tablet form can be absorbed through digestion