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.
Dietician. It is safe to drink green tea during pregnancy, in moderation. About three or four cups of green tea a day is a sensible limit. Green tea has been thought to be a health-promoting drink since ancient times. However, recent research has cast doubts over its benefits during pregnancy and has even raised some concerns about its safety.