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It's worth noting here: when I say "research," I mean almost exclusively animal studies
Also, taking oral supplements at the wrong time can limit their effectiveness
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B12 injections are concentrated doses of vitamin B12, a key nutrient that plays a critical role in how your body creates energy, metabolizes fat, and supports brain and nerve function
However, it is commercially distributed under alternative labels such as dietary supplements or research-use chemicals, categories that fall outside standard FDA premarket approval
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