Mild irritation, tingling, or temporary redness may occur in a minority of users
It has worked great for me
This uptake depends on a protein called intrinsic factor (IF), which captures B12 in the small intestine, absorbing it in the final stretch of your small intestine (the ileum)
FIGURE 1 Polyphenols Polyphenols are the most abundant antioxidant in plants and have an excellent ability to capture oxidative free radicals (Jiang et al., 2016)
Peptide nasal sprays also offer a painless delivery, as they do not require injections or needles
Gopal Grandhige, MD, FACS, Board-Certified Surgeon Last Reviewed: May 24, 2026 BPC-157 is not a proven weight loss tool