Headlines like “8 drugs that cause serious dementia” are usually misleading. There is no list of common medications that has been proven to directly cause dementia in the general population. However, some medications can affect memory, attention, or thinking, especially in older adults, and some have been associated with cognitive problems in certain studies.
Medication groups that may warrant discussion with a healthcare professional include:
- Anticholinergic medications
- Found in some allergy medicines, bladder medications, antidepressants, and sleep aids.
- They can cause confusion or memory problems, particularly in older adults.
- Benzodiazepines
- Used for anxiety or insomnia.
- They can impair memory and increase the risk of falls. Long-term use has been studied for a possible link with dementia, but a cause-and-effect relationship has not been established.
- Some sleep medications
- Certain prescription sleep aids can cause confusion, especially in older adults.
- Opioid pain medications
- Can cause drowsiness and impaired thinking, particularly at higher doses.
- Some antiseizure medications
- Depending on the medication and dose, some people experience cognitive side effects.
- Certain medications for Parkinson’s disease
- Some may contribute to confusion or hallucinations in susceptible individuals.
- Some older antidepressants
- Particularly those with strong anticholinergic effects.
- Certain medications for bladder overactivity
- Some of these also have anticholinergic properties.
Important points
- Temporary confusion is not the same as dementia.
- Many of these medicines are appropriate and beneficial when used correctly.
- Do not stop any prescribed medication on your own, as this can sometimes be harmful.
If you or a family member has new memory problems, it’s important to have them evaluated. Causes can include medication side effects, vitamin deficiencies, thyroid problems, infections, depression, sleep disorders, and neurodegenerative diseases—many of which are treatable.
If you tell me which medication you’re concerned about, I can explain what is known about its effects on memory and cognition.
