The answer depends on several factors, including the cause and severity of deficiency, your overall health, and how long symptoms have been present
Retrieved March 15, 2025, from Hertfordshire Colonic Health
Always inform your doctor and pharmacist of all medications, supplements, and herbal products you are taking to avoid any potential negative interactions
For B12 Deficiency If you have a vitamin B12 deficiency, the initial dose is usually 30mcg injected under the skin or into the muscle every day for between 5 and 10 days to boost levels of B12 quickly
Commonly reported side effects include mild pain, swelling, or itching at the injection site and sometimes nausea
Francis GL et al