Oral Supplements : Oral supplements are widely available, and research suggests that, at high doses, they can be just as effective as injections for correcting deficiency[21], making them a viable alternative for many individuals
However, a very small percentage of B12 from a supplemental dose is absorbed by passive diffusion, rather than by intrinsic factor, such that vegans can make up for taking B12 only once per day, or even only once per week, by taking larger doses than normally provided by food
Despite millions of social-media views and persistent claims of rapid fat burning, no randomized controlled trial has ever confirmed that this practice causes meaningful weight loss
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The manufacturing process for vitamin b1, b6, and b12 involves series of steps including drug development, synthesis, formulation, and filtration etc