Methylcobalamin, vitamin B12 preparations containing benzyl alcohol should be avoided in premature neonates because benzyl alcohol has been associated with gasping syndrome, a potentially fatal condition characterized by metabolic acidosis and CNS, respiratory, circulatory, and renal dysfunction
Most medical professionals will recommend alternate injection sites to avoid scarring and irritation
Another cytosolic route for glutathione degradation could involve PCS, which may be particularly important in GS-conjugate breakdown (Blum et al., 2007, 2010)
doi: 10.1097/MD.0000000000007258 178 GongMDongWShiZXuYNiWAnR
Yes, bruising is a normal and safe response to injection-needle trauma and typically resolves within 7 to 14 days without treatment