Eat a well- balanced diet with plenty of fiber. Good sources of fiber are fruits, vegetables, legumes, and whole-grain bread and cereal (especially bran). Drink 1 1/2 to 2 quarts of water and other fluids a day (unless your doctor has you on a fluid-restricted diet). Fiber and water work together to keep you regular.
Zofran: FDA Pregnancy Category B. According to the United States Food and Drug Administration (FDA), ondansetron (Zofran) is a Pregnancy Category B drug. This means there is no evidence of risk in humans. Either animal findings show risk, but human findings do not; or, if no adequate human studies have been done, animal findings are negative.
Zofran has proven to be an effective medication to treat nausea and vomiting, but the medication never gained federal approval for use in pregnant women. Despite the lack of approval, women battling morning sickness took Zofran, Zuplenz (similar drug) or ondansetron (generic version) which some families claim led to birth defects. Zofran is approved to prevent nausea and vomiting caused by chemotherapy, radiation and surgery.