Not necessarily safer just different in risk profile
What they found that, at least for the gastrointestinal tract, oral administration of BPC 157 seems to be favorable Pentadecapeptide BPC 157 and the central nervous system (link) This great study was designed to look at the effectiveness of BPC-157 on things like Behavioral Disorders, Brain Lesions, and Spinal Cord Injury
Understanding whether vitamin B12 is water-soluble helps explain absorption mechanisms, dietary requirements, supplementation safety, and why certain groupsincluding vegans, older adults, and those with gastrointestinal conditionsrequire regular intake or therapeutic intervention to maintain optimal levels
The 50 mg setup is far easier to draw accurately (20 units is a clean, mid-barrel mark) because the higher concentration and larger per-dose amount land on a bigger, more forgiving volume