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.
Prenatal vitamins are safe and important to take when you're pregnant. Ask your health care provider about the safety of taking other vitamins, herbal remedies, and supplements. Most herbal preparations and supplements have not been proven to be safe during pregnancy. Generally, you should not take any OTC medication while pregnant unless it is necessary. The following medications and home remedies have no known harmful effects during pregnancy when taken according to the package directions.