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Getting the correct injection dose is key for good treatment
Commonly used for blood sugar management, Metformin can interfere with how the small intestine absorbs B12
The honest boundary is that even the coherent pairing is a mechanistic hypothesis with no human validation, so the most defensible research posture is to study the single compound at its documented dose first, and treat any combination as a further, clearly-labelled research question rather than a default
There are capsules, creams, and nasal sprays
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