Vinphatoxin has the main activity Oxytocin, is a drug used in obstetrics, has the effect of causing uterine contractions in both frequency and intensity. The drug is produced in the form of a syringe, with a concentration of 1ml/5UI.

normal pregnancy lasts an average of 280 days (about 40 weeks) from the first day of your last menstrual period. However, it is common for the due date to change, and some ultrasounds can be as much as 2 weeks off from the actual due date. Very few women actually give birth on their due date.