Rhinathiol Promethazine Syrup 125 ml , Alleviation of unproductive and irritative coughs in adults and children, particularly when coughing occurs at nigh Contents: Carbocisteine, promethazine HCl. How to Use: Adults: Take 10 ml 34 times aday Children 6-15 years): Take 5 ml 2-3 times aday A valid prescription should be available upon delivery