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Do acid-lowering agents affect vitamin B12 status in older adults
Why to avoid with MTHFR: Requires multiple conversion steps to become active MTHFR mutations impair these conversions Contains cyanide (though small amount) Least bioavailable form Found in most cheap multivitamins and fortified foods Bottom line: Choose methylcobalamin, hydroxocobalamin, or adenosylcobalamin instead
1 2 3 4 Experimental Biology and Medicine
Typical dosage: 250500mcg once or twice daily Administration: Subcutaneous or intramuscular injection near the injury site Cycle length: 24 weeks for minor injuries
Some individuals may experience mild injection site reactions, temporary fatigue, or slight headache
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