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For patients expected to be on prolonged treatment or who take PPIs with medications such as digoxin or drugs that may cause hypomagnesemia (e.g., diuretics), health care professionals may consider monitoring magnesium levels prior to initiation of PPI treatment and periodically [see Adverse Reactions (6.2)]

There is no good evidence for this, and it is worth being cautious about that framing

The most common treatment is lifelong B12 intramuscular injections although small amounts of B12 can be absorbed without intrinsic factor

Assessment of fall risk through evaluating gait and balance can identify patients who are at high risk