pheniramine: an antihistamine used in preparations to treat allergies and respiratory infections; used to treat rhinitis and skin rashes and pruritus
antihistamine: a medicine used to treat allergies and hypersensitive reactions and colds; works by counteracting the effects of histamine on a receptor site
criminal negligence: (law) recklessly acting without reasonable caution and putting another person at risk of injury or death (or failing to do something with the same consequences)