B12 is stored quite well by the liver, so sometimes we dont see low levels on bloodwork even in someone who might be experiencing low intracellular levels of B12
doi:10.3389/fnins.2018.00644 Zhang H, Wang Y, Lian L, Zhang C, He Z
Healing Peptide Flexibility BPC-157, TB-500, and GHK-Cu show flexible timing requirements
Inclusion criteria consisted of male and female participants without child bearing ability either due to menopause, documented hysterectomy, bilateral salpingectomy, bilateral oophorectomy, or bilateral tubal ligation, as well as age of at least 18 years, a body mass index of 30, or a body mass index of 27 with the presence of hypertension or dyslipidemia [1]
Skipping the off-period leads to diminishing returns as receptor sensitivity declines