Flow measurement is the quantification of bulk fluid movement. Flow can be measured in a variety of ways. Positive-displacement flow meters accumulate a fixed volume of fluid and then count the number of times the volume is filled to measure flow.
The following herbs have been rated Likely Safe or Possibly Safe for use during pregnancy:4. 1  Red Raspberry Leaf â Rich in iron, this herb has helped tone the uterus, increase milk production, decrease nausea, and ease labor pains. 2  Peppermint Leaf â Helpful in relieving nausea/morning sickness and flatulence.
Whether or not herbs induce labor, there are other alternatives to prepare the uterus. A widely used choice is red raspberry leaf tea. It is a uterine tonic used by Native Americans and midwives for thousands of years. It does not start contractions and can be safely used throughout pregnancy.