1000 g daily) may be able to produce adequate absorption of vitamin B 12 even in the presence of intrinsic factor deficiency, and therefore may be an alternative to the intramuscular route for many people
The peptide glycyl--histidyl--lysine is an endogenous antioxidant in living organisms, possibly by diminishing hydroxyl and peroxyl radicals
Or use as directed by a veterinary doctor
If youre a competitive bodybuilder or powerlifter who uses any such peptide, your next drug test may result in disqualification
FEMS Microbiology Ecology, 28(4): 383391 Hojjati-Najafabadi A, Mansoorianfar M, Liang T, Shahin K, Karimi-Maleh H (2022)
The human trials people cite tested the full protein rather than the fragment being sold, and most of those were never published or failed to show it worked