Older Adults Advised to Limit Anticholinergic Medicines - Medscape

What the report says

Medscape reports that older adults are being advised to limit use of medicines with anticholinergic effects, while new evidence remains unable to settle whether these drugs directly contribute to dementia. According to the publisher’s snippet, a review looked at 17 studies, but each was judged to have a serious or critical risk of bias. As a result, the review could neither prove nor rule out a causal relationship with dementia.

Anticholinergic medicines block the action of acetylcholine, a chemical involved in nerve signaling. Drugs with these properties are used across several conditions, including allergies, overactive bladder, nausea, depression, sleep problems and some movement disorders. In older adults, these medicines have long raised concern because they can worsen confusion, dizziness, constipation, urinary retention, dry mouth and fall risk, depending on the drug, dose and patient.

The key implication of the Medscape report is not that all such medicines should be stopped, but that their use in older adults should be reviewed carefully. The uncertainty around dementia causation makes medication review especially important: patients may still face short-term side effects even where long-term cognitive risk is not conclusively established. Clinicians often weigh whether a safer alternative is available, whether the medicine remains necessary and whether the cumulative anticholinergic burden is high.

Patients should not abruptly discontinue prescribed medicines without medical advice, particularly if they are being used for psychiatric, neurologic or bladder conditions. The finding matters because many older adults take multiple medications, and even uncertain risks can become clinically important when benefits are modest or when non-drug approaches or lower-risk therapies may be suitable.