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Metformin, widely prescribed for type 2 diabetes, can impair B12 absorption through effects on calcium-dependent ileal uptake

Understanding Vitamin B12 Deficiency Vitamin B12 deficiency occurs when your body lacks enough of this essential nutrient, leading to symptoms like: Persistent fatigue Weakness and lightheadedness Numbness or tingling in hands and feet Memory problems and difficulty concentrating Mood changes, including irritability and depression Certain factors increase your risk, such as age, certain medications, digestive conditions, and restrictive diets

The catalog listing identifies the material as 30 mL liquid at 50 mg per mL with 1500 mg total content, and provides common chemical identifiers including CAS number and naming conventions used in scientific indexing