#Otcmedications

A recent headline in international media warns that a common over-the-counter (OTC) medication, widely used for allergies, may increase the risk of dementia, prompting concern among health professionals and the public in Thailand and globally. Leading doctors cited in a recent report from Women’s Health Magazine are drawing attention to mounting research that connects the use of certain antihistamines—medicines typically purchased without a prescription—to a greater likelihood of future cognitive decline.

Recent international coverage highlights a potential link between certain over-the-counter antihistamines and an increased risk of cognitive decline. Leading physicians note that long-term or heavy use of first-generation antihistamines—commonly found in allergy and cold remedies—may contribute to future dementia, especially among older adults. This aligns with a growing body of evidence suggesting anticholinergic medications can affect memory and learning.

Antihistamines are a staple in Thai households, particularly as urban pollution and allergy rates rise in Bangkok and other cities. The caution matters for millions who self-medicate with OTC drugs, often without professional guidance. Thai readers should understand which medicines carry higher cognitive risks and how to choose safer options.