Dyes and preservatives in oral antihistamines.
Antihistamines are commonly used in the treatment of urticaria. Some antihistamines contain dyes and preservatives which have themselves been shown to produce or exacerbate urticaria; the presence of these substances is not indicated in the usual formularies and a list of commonly prescribed antihistamines is presented, detailing the azo dyes, other dyes and preservatives contained therein.
D000284:Administration, Oral; D002626:Chemistry, Pharmaceutical; D004396:Coloring Agents; D004339:Drug Compounding; D006634:Histamine H1 Antagonists / Q000008:administration & dosage / Q000627:therapeutic use; D006801:Humans; D010592:Pharmaceutic Aids; D011310:Preservatives, Pharmaceutical; D014581:Urticaria / Q000188:drug therapy
D004396:Coloring Agents; D006634:Histamine H1 Antagonists; D010592:Pharmaceutic Aids; D011310:Preservatives, Pharmaceutical