• Gideon Koren, Shannon Clark, Gary D V Hankins, Steve N Caritis, Menachem Miodovnik, Jason G Umans, and Donald R Mattison.
• Motherisk Program, Hospital for Sick Children and University of Toronto, Toronto, ON, Canada. gkoren@sickkids.ca
• Am. J. Obstet. Gynecol. 2010 Dec 1; 203 (6): 571.e1-7.

ObjectiveTo evaluate the effectiveness of Diclectin (doxylamine succinate 10 mg-pyridoxine hydrochloride 10 mg, delayed-release preparation) as compared with placebo for nausea and vomiting of pregnancy.Study DesignA randomized, double-blind, multicenter placebo controlled trial studying pregnant women suffering from nausea and vomiting of pregnancy, analyzed by intention to treat. Women received Diclectin (n = 131) or placebo (n = 125) for 14 days. Nausea and vomiting of pregnancy symptoms were evaluated daily using the pregnancy unique quantification of emesis scale.ResultsDiclectin use resulted in a significantly larger improvement in symptoms of nausea and vomiting of pregnancy compared with placebo based on both the pregnancy unique quantification of emesis score (-4.8 ± 2.7 vs -3.9 ± 2.6; P = .006) and quality of life. After the trial, 64 (48.9%) women receiving Diclectin asked to continue compassionate use of their medication, as compared with 41 (32.8%) of placebo-treated women (P = .009).ConclusionDiclectin delayed release formulation of doxylamine succinate and pyridoxine hydrochloride is effective and well tolerated in treating nausea and vomiting of pregnancy.Copyright © 2010 Mosby, Inc. All rights reserved.

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