A typical regimen may include: Initial phase : 1,000 mcg daily or several times a week for 12 weeks Maintenance : 1,000 mcg monthly or as directed by a doctor Benefits of Vitamin B12 Injections Vitamin B12 injections can provide several health benefits, particularly for those who are deficient
This includes people with pernicious anemia, a condition where the body lacks intrinsic factors, making it impossible to absorb B12 from food
Foods rich in B12 include: Beef liver Clams Fish like salmon and tuna Dairy products Fortified cereals However, people with absorption issues may still need injections
Both methods bypass the digestive system, but they differ in absorption speed, nutrient scope, and ideal use cases
Some people say it's better pre-workout