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.
NyQuil is a very popular cold and flu medication. Because of recent changes in the law regarding the sale of decongestants, NyQuil no longer contains one. It still has medications to relieve pain/fever, sneezing/itching(antihistamine), and cough(suppressant).