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You may need a vitamin B12 supplement if you're a vegan or vegetarian, you don't eat B12-fortified foods every day, and your prenatal vitamin doesn't include B12
Some practitioners implement cycling to theoretically prevent receptor desensitization, provide physiological breaks, or manage costs, though evidence supporting these approaches is limited
Multivalent S2-based vaccines provide broad protection against SARS-CoV-2 variants of concern and pangolin coronaviruses
Source: O'Leary, F., & Samman, S
High-dose oral B12 can even help overcome mild absorption problems, as some of the vitamin is absorbed passively
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