b12 injection 10000 Cyanocobalamin (B12) 12 and other indispensable nutrients for cellular energy utilization Now Foods B-12 Energy Boost,
Description
[9] Therefore, unless the mother has a clear deficiency, routine use of the B-Complex Injection during breastfeeding may be unnecessary

Supplementation was started with weekly intramuscular 1000 g vitamin B12 shots

AOD9604 drug summary

However, these side effects are temporary and will subside quickly