B12 is a water soluble vitamin and when given in the injection formula, it usually last a week versus a pill or liquid form that only last a few hours
Timing matters too
By the next morning, many of them notice an energy lift they havent felt in months
Molecules 19:1906619077 Sikiric P, Separovic J, Anic T, Buljat G, Mikus D, Seiwerth S, Grabarevic Z, Stancic-Rokotov D, Pigac B, Hanzevacki M et al (1999) The effect of pentadecapeptide BPC 157, H2-blockers, omeprazole and sucralfate on new vessels and new granulation tissue formation
Discard if turbidity, color change, or particulate matter is observed
And there are tons of weight loss secrets out there from a myriad of diets to out-of-this-world supplements