what's the difference between bpc 157 and bpc 159 BPC-157 Benefits, Dosage & Before/After Results What is BPC-157? | Everything

Until the recent breakthrough on preparation of 15 N-labeled cobalamins via biosynthesis [8] and further development of the first multiple stable isotope dilution assay (SIDA) that simultaneously determines the four natural vitamers [7], the quantification of B12 in foods has been relying on methods mainly applying microbiological assays [9, 10], (U)HPLC-UV [11,12,13,14,15,16,17], and occasionally LC-ICP-MS [18]

Approximately 11% of those who follow vegan diets are also deficient in B12

10.1016/j.vetimm.2005.11.002

That all indicates to me that if you reach a B12 intake level that gives you coloured wee...you just scale back a bit