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.
Phenergan (promethazine) for Nausea/Vomiting: Has anyone experienced sadness after starting to take this drug. I am on 25mg for a few days and feel that it has helped with the nausea a little bit with the anxiety but it has made me sleep all day and feel sad.