I usually use doxylamine for sleep. i want to switch to diphenhydramine for a while. ok to just take diphenhydramine tonight even though i took doxylamine last night ?

Sleep hygiene remains best in the long run, including balanced activities during the day with at least some physical activity, ideally outdoors, no tv or computer before bed time, light dinner hours before bed time, avoiding or reducing coffee and alcohol are only few suggested changes. Nights mirror our days and they are not all meant to be the same.

Taking diphenhydramine the day after doxylamine is fine.