Because intramuscular B12 is absorbed more slowly over a longer time frame than intravenous delivery, each shot offers a sustained elevation in serum levels between appointments
Han B, Zhu FX, Shi C, Wu HL, Gu XH
The recommended daily amount (RDA) varies, depending on age and other factors, but while the recommended dose for an adult is 2.4 mcg (micrograms), B12 vitamin pills are also sold in doses of 5 to 25 mcg, and even 500 mcg to 1,000 mcg or more
Results may vary from person to person VITAMIN B12 INJECTION WIRRAL Your body require a daily intake of B12 vitamins in order to properly function
In summary, vitamin B12 and B complex injections each provide their distinct benefits, but they are not interchangeable