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Anyone taking methyl-donor-sensitive medications (some psychiatric drugs, methotrexate, methylated B-vitamin protocols at high doses): NNMT shares the methyl donor SAM, so theoretical interactions exist
Your body uses what it needs, and much of the excess is filtered out by the kidneys and passed in urine
What Can Vitamin B12 Injections Do for You
Without enough B12, you might feel tired, have nerve problems, or face serious health issues
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