trimeprazine

an ANTIHISTAMINES drug (a PHENOTHIAZINES derivative) that also possesses sedative properties. Given by mouth, it is mainly used in the treatment of pruritus (itching) and urticaria (nettle rash). Common side-effects include drowsiness, dizziness, dryness of mouth, muscular tremor and incoordination, and confusion. Trade name: Vallergan.