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10.1002/sim.1186 27 HouleS

It is also known that oral contraceptives may lower pyridoxine levels in some individuals, which could be considered a drug-nutrient interaction of clinical relevance

People with Certain Medications Long-term use of certain medications, like proton pump inhibitors, H2 receptor antagonists, or metformin, can interfere with B12 absorption

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If you suspect your vitamin B12 levels may be too high or too low, consider speaking with your healthcare provider about blood testing and strategies for maintaining balanced vitamin B12 levels