The recommended daily intake (RDI) of vitamin B12 varies depending on age and specific conditions: Adults: 2.4 micrograms (mcg) Pregnant women: 2.6 mcg Breastfeeding women: 2.8 mcg For those with a diagnosed vitamin B12 deficiency, higher doses may be prescribed: Initial treatment: 1,000 mcg intramuscularly once a week for four weeks Maintenance: 1,000 mcg intramuscularly once a month Is It Possible to Overdose on Vitamin B12
Including ones that involve removing part of stomach and/or small intestine
The amount and how often you get these shots depend on how bad the deficiency is and how you get the shots.Understand vitamin B12 injections dosage and frequency for safe, effective treatment and energy boost
Occasional headache , flushing , or dizziness
But some studies have led to questions about high-level B12 doses in those not vitamin B12 deficient or at risk of a deficiency
These signs often develop gradually and can be mistaken for symptoms of stress or overwork