| http://www.w3.org/ns/prov#value | - One research group at Rh??ne Poulenc, headed by the chemist Paul Charpentier (n.d.), was trying to create an improved antihistamine loosely modeled on diphenhydramine, which was already known and is today the active ingredient in such drugs as Benadryl, Dramamine, and Sominex.
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