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.
If you are already taking any of these medicines you should avoid taking this one as well: 1  appetite suppressants. 2  amphetamine-like stimulants, including methylphenidate, dexamfetamine and modafinil. 3  other decongestants (often found in other non-prescription cough and cold remedies) 4  the antibiotic linezolid.