Risky dementia drugs are still widely prescribed in US. Here is why that has not changed

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• One in four dementia patients received risky medications despite clear warnings
• Antidepressants and antipsychotics may increase confusion and fall risk.
• Dementia care gaps shown by unclear reasons for many prescriptions

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For more than a decade, doctors have been advised to avoid certain medications in older adults with dementia. The warnings are clear. These drugs can cloud thinking, slow movement, and make people more vulnerable to falls and injuries. Some even carry black box warnings because of their links to higher death rates in dementia patients.

Yet a large analysis of Medicare data shows the practice remains common.

Roughly one in four older Americans with dementia received at least one medication considered risky for their condition. The proportion was significantly higher than among older adults without cognitive impairment, even though overall use of these drugs has declined over time, the Washington Post reported.

What kinds of drugs are involved

The medications flagged fall into several broad categories. They include antidepressants, antipsychotics, sedatives and older drugs such as barbiturates. Many act directly on brain chemicals that regulate mood, alertness and behaviour.

In younger or healthier patients, these drugs may be appropriate. In people with dementia, however, the balance often shifts. A medicine meant to calm agitation can instead cause heavy sedation, worsen confusion, or make walking unsafe.

Families often describe sudden changes after a prescription begins. A parent who was unsteady but mobile may start falling. Someone who could hold a conversation may become withdrawn or disoriented.

Why dementia patients are especially vulnerable

Ageing bodies process medications differently. The liver and kidneys break drugs down more slowly, meaning the effects last longer. Many older adults are also taking multiple medications, which increases the risk of interactions.

Dementia adds another layer of risk. Changes in the brain make patients more sensitive to medications that affect cognition. Even standard doses can trigger side effects that would be mild in others.

This is why geriatric guidelines urge doctors to use these drugs sparingly and only after other approaches have failed.

Why doctors still prescribe them

If the risks are so well known, why does the practice persist?

Doctors say the reality of dementia care is often messy. Dementia is not just memory loss. It can bring agitation, aggression, hallucinations, sleeplessness and fear. These symptoms can be distressing for patients and exhausting for caregivers.

Guidelines recommend non-drug approaches first. That means identifying triggers such as pain, hunger, anxiety, boredom or unfamiliar surroundings. It may involve changes in routine, one-on-one supervision, or environmental adjustments.

In theory, this works. In practice, it requires time, training and staffing that many families and care facilities do not have.

In hospitals, nursing homes and busy clinics, medication can become the fastest way to manage a crisis, even if it is not the safest long-term solution.

The problem with the data and the bigger picture

The analysis also found that many prescriptions were written without a clearly documented medical reason. That does not necessarily mean there was no justification. Behavioural symptoms are often poorly captured in billing records, which rely on limited diagnosis codes.

Still, the gap is striking. Prescriptions without documented indications were far more common than those with a clear clinical rationale.

This points to a broader issue. There is a growing mismatch between what guidelines recommend and what everyday care allows.

What families can do

For caregivers, the findings are not a reason to panic or reject treatment outright. They are a reminder to stay engaged.

When a new medication is prescribed, families can ask what symptom it is meant to treat, what side effects to watch for, and whether non-drug options were tried or could still be explored.

Dementia care rarely offers perfect choices. But reducing avoidable harm remains one of the few goals that everyone shares. As populations age and dementia becomes more common, how these medications are used will remain a quiet but critical test of the healthcare system.