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It is more prevalent in individuals who have restricted diets or suffer from absorption issues due to underlying health conditions

Washout periods: for crossover designs, a 7-14 day washout should be adequate given both short serum half-life and the typical decay timeline of tissue-level effects post-dosing

While many people take B12 vitamins in pill form, the body often struggles to absorb them through the digestive tractespecially for those with gut health issues or dietary restrictions

Because vitamin B12 supplements contain vitamin B12 that isnt bound to food, its easier to absorb, even for people who have low stomach acid

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