Older adults admitted with higher prescribing of first-generation antihistamines are more likely to experience delirium in the hospital.
A study published online in the Journal of the American Geriatrics Society found an association between inpatient physician prescribing of first-generation antihistamines and delirium among older general medicine inpatients.
No direct quote available in the text.
Author's summary: First-generation antihistamines increase delirium risk.