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L-Arginine Precautions

Long-term use of proton pump inhibitors and metformin can impair B12 absorption, necessitating monitoring or parenteral therapy

High-Risk Groups Older Adults Aging impacts B12 absorption, increasing deficiency rates to over 20% in seniors

Ethics statement The studies involving humans were approved by Research Ethics Committee of the Second Hospital of Hebei Medical University

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4. WHAT ARE THE POSSIBLE SIDE EFFECTS