The pharmacologic management of nausea and vomiting of pregnancy.

Nausea and vomiting are common in early pregnancy. Forty percent or more of pregnant women may continue to suffer beyond the first trimester and 10% beyond the second trimester. A focus of the assessment is to confirm that the nausea and vomiting is due to the pregnancy and not some other cause. Nonpharmacologic options, particularly dietary modification, are a mainstay of treatment. For those who continue to experience symptoms, pharmacologic management can be employed. The combination of doxylamine succinate/pyridoxine hydrochloride was reintroduced in the United States following FDA approval in early 2013. The product was given a pregnancy safety rating of A and is recommended as first-line pharmacologic treatment for NVP. Other options include antihistamines, metoclopramide, ondansetron, phenothiazines, and after the first trimester, corticosteroids.