Anticholinergic Drug/antipsychotic medications Exposure leads to a Risk of Dementia by 70%.

One of the riskiest classes of drugs in this regard are anticholinergic drugs, prescribed for a wide variety of conditions, including depression, incontinence, insomnia, allergies and epilepsy
Recent research assessing effects of 56 anticholinergics found statistically significant associations between dementia and anticholinergic antidepressants, antiparkinson drugs, antipsychotic drugs, bladder antimuscarinics and antiepileptic drugs
In the highest exposure group (excess of 1,095 standardized daily doses over the past one to 11 years before diagnosis), the odds ratio for dementia was between 44% and 54%, with an average of 49%; anticholinergic antipsychotics raise risk by 70%

A partial list of medications: