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This includes: Patients with malabsorption issues due to gastrointestinal disorders Individuals with pernicious anemia or other conditions that impair B12 absorption Cases where a rapid increase in B12 levels is necessary In these cases, IV delivery gets B12 straight into the blood
Some patients experiment with twice-weekly dosing, but published data doesn't support additional benefit
Most researchers don't maintain that discipline
Once a day for 4 - 5 days
Do not give yourself extra doses without medical advice
This can lead to B12 deficiency, which can cause symptoms such as fatigue, weakness, and difficulty concentrating
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