Diphenhydramine is pretty strongly affiliated with cognitive risks (acetaminophen too). https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4592307/ https://www.ncbi.

Diphenhydramine is pretty strongly affiliated with cognitive risks (acetaminophen too). https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4592307/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4592307/ When I must take an antihistamine, I go with loratadine (and quercetin if I have it)