Unfortunately, such vitamin B12 injection dosage and frequency advice is common
This is one reason why manufacturers specify dark storage conditions
Studies that used 1 mg/day in oral and intravenous trials did not show meaningfully better outcomes than lower doses, and higher doses were associated with more reports of headache, diarrhea, and gastrointestinal effects
Neo-B12 Injection is also used to treat tobacco amblyopia (smokers blindness) and Lebers optic atrophy, a degenerative inherited condition caused by degeneration of retinal cells
Inadequate initial treatment may result in suboptimal responses and persistent symptoms
Hematocrit, reticulocyte count, vitamin B12, folate and iron levels should be obtained prior to treatment