This is the main factor for how long a B12 injection takes to work, offering a significant advantage over oral supplements, which must be broken down by the digestive system before they can be distributed throughout the body
Usage Information A physician develops recommended dosage protocols for a patient individually, according to their health conditions and age
All medications are prepared under pharmacist supervision and provided through licensed clinicians
Vitamin B12 is not typically found in plants, so vegans and vegetarians may need to look for fortified breakfast cereals that include B12 or opt for a regular supplement (NIH, 2020)
Even if your lab values say you are normal, your body still may be needing more as lab accuracy for vitamin B12 is highly debated
The NHS advises that taking up to 2 mg (2000 micrograms) daily in supplements is unlikely to cause harm