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.
Prescription Medications. There are some prescription nausea medications that are safe for use during pregnancy. Phenergan, the brand name for promethazine, is an antihistamine that's commonly prescribed for pregnancy-related nausea. Other medications your doctor might prescribe are Compazine, Tigan or Reglan.