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.
1. Silence a cough. For many years, eucalyptus oil has been used to relieve coughing. Today, some over-the-counter cough medications have eucalyptus oil as one of their active ingredients. Vicks VapoRub, for example, contains about 1.2 percent eucalyptus oil along with other cough suppressant ingredients.