can b12 injection cause headaches Headache: The Link Between Vitamin B12 and B12 Injection Therapy in Shoreline
Description
PMC 6611390

HPLC run was done as previously described (45)

Temporary foaminess may be the result of forceful urine flow
However, at doses higher than 50 mg per day, some side effects such as skin flushing can occur
Yes, excessively high B12 levels may contribute to hair loss in rare cases, though direct evidence is limited
