In obstetrics, the distance between the midline superior point of the sacrum and the upper margin of the symphysis pubis. It is the anteroposterior diameter of the pelvic inlet, estimated by subtracting 1.5 to 2 cm from the measurement of the diagonal conjugate.
1 Promethazine-codeine cough syrup, a medication that contains codeine, an opioid that acts as a cough suppressant and can also produce relaxation and euphoria when consumed at a higher-than-prescribed dose. 2  It also contains promethazine HCl, an antihistamine that additionally acts as a sedative.
Often times the term âexpectorantâ is incorrectly used with any cough medicine. To get the benefits of an expectorant your product must have and expectorant ingredient in it. Mucinex, a popular over the counter, sinus, cough, cold, mucus relief product contains Guaifenesin but does not contain Ephedrine HCL.ften times the term âexpectorantâ is incorrectly used with any cough medicine. To get the benefits of an expectorant your product must have and expectorant ingredient in it. Mucinex, a popular over the counter, sinus, cough, cold, mucus relief product contains Guaifenesin but does not contain Ephedrine HCL.