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Targeted neurotherapeutics face a challenge in penetrating the blood brain barrier (BBB) [14-16]
Vitamin B12, also called cobalamin, helps your body make DNA, nourishes your brain and nervous system, and helps maintain healthy red blood cells
Injections provide consistent delivery under medical guidance, so you have what your body needs
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The "doctor is hiding this from you" framing actively sabotages the "work with your doc" close because you just trained the reader to distrust the exact gatekeeper they now need for access
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