Medication through injection into veins is one of the most effective methods because you inject medicine directly into your veins, providing quick relief.

I agree that intravenous medication tends to offer faster relief. I've noticed that when a medication goes directly into the bloodstream, it often acts more swiftly, making it a preferred option for addressing intense pain.

If I am feeling a lot of pain and discomfort, I will go for intravenous route of administering medicine in my bloodstream.

From my observation, opting for intravenous administration during severe pain seems like a reasonable choice. It aligns with my understanding that injecting medication directly into the bloodstream can be more effective in providing rapid relief.

Most suitable vitamin B12 route of administration into the body is not oral route because it takes a lot of delay in absorption through the digestive system.

As far as I know, the preference for injecting Vitamin B12 instead of oral administration is due to the potential delay in absorption through the digestive system. My opinion is that bypassing this route can be crucial, especially for individuals with poor gut health, ensuring quicker and more reliable absorption. Vitamin B12 absorbtion also require intrinsic factor for absorbtion which is secreted by stomach , so there are multiple steps at which delay is possible . So parental route is preferred.

Good luck .