You may want to re-think regular use of benadryl. There is a study linking the use of anticholinergic drugs like benadryl to dementia: https://www.health.harvard.edu/blog/common-anticholinergic-d...

The scary part is that:

dementia risk increased along with the cumulative dose. Taking an anticholinergic for the equivalent of three years or more was associated with a 54% higher dementia risk than taking the same dose for three months or less