chlorpheniramine maleate: an antihistamine (trade names Coricidin and Chlor-Trimeton)
antihistamine: a medicine used to treat allergies and hypersensitive reactions and colds; works by counteracting the effects of histamine on a receptor site
schizopoda: in former classifications a division of Malacostraca; superseded by the orders Mysidacea and Euphausiacea