A 25-year-old woman is visiting the prenatal clinic and shares with the nurse her desire to go "natural" with her pregnancy. She shows the nurse a list of herbal remedies that she wants to buy so that she can "avoid taking any drugs." Which statement by the nurse is correct?

"It is important to remember that herbal remedies do not have proven safety ratings for pregnant women."

"Most herbal remedies are not harmful and are safe for use during pregnancy."

"Keep in mind that products from different manufacturers are required to contain consistent amounts of the herbal products."

"Please read each label carefully before use to check for cautionary warnings."