The content is not intended to encourage application, diagnosis, or self-treatment of unlicensed individuals, and should not be used as a substitute for the clinical judgment of a qualified healthcare provider.
The key difference comes down to bioavailability, which is how much of a nutrient your body can actually absorb and use
For people who want a periodic boost athletes, those going through a demanding stretch, or people who feel run down injections are a convenient option that many find more effective than daily pills
Reconstitution and handling
For individuals with low vitamin B12 levels or difficulty absorbing nutrients through diet alone, this method can be especially beneficial
Pernicious Anemia: Parenteral vitamin B 12 is the recommended treatment and will be required for the remainder of the patient's life