Yes, Benadryl, but that dip… is sold under all sorts of brands as a sleep aid. I get mine on Amazon, their brand, super inexpensive.
Be careful. Diphenhydramine is Benadryl, an antihistamine. Most common sleep aids contain an antihistamine, but many OTC sleep aids have an antihistamine OTHER THAN diphenhydramine (usually doxylamine).
Now, for sleeping, doxylamine = diphenhydramine, but the SARS CoV 2 inhibition of diphenhydramine (if it is true) may work a different way than the sleep-inducing properties.