Coflax Children Cough Syrup?helps to provide fast?relief for?Cough?and?Cold?in children. Each 5ml of Coflax Children syrup contains; Diphenhydramine 7mg; Sodium citrate 28.5mg; Ammonium chloride 65mg; Menthol 0.6mg.?Diphenhydramine, an anti-histamine in Coflax syrup helps reduce symptoms of sneezing, running nose, cold and cough while Ammonium chloride, an expectorant that helps to bring out mucus from the lungs.