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QUESTION: How effective are different treatments for nausea and vomiting in early pregnancy?
Data sources
Studies were identified by using the search strategy of the Cochrane Pregnancy and Childbirth Review Group, which includes searches of Medline and the Cochrane Controlled Trials Register and handsearches of 38 journals.*
Study selection
Studies were selected if they were randomised controlled trials of any treatments to reduce nausea and vomiting in pregnancy (NVP) at up to 20 weeks of gestation.
Data extraction
2 reviewers independently assessed studies for quality of allocation concealment and extracted data on study methods, participant characteristics, interventions, and nausea and vomiting outcomes.
Main results
23 trials were included. Antiemetic medication reduced nausea more than did placebo (12 RCTs) but caused more drowsiness and sleepiness (4 RCTs) (table). 3 trials compared Bendectin with placebo …
Footnotes
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Source of funding: no external funding.
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For correspondence: Dr D Jewell, University of Bristol, Bristol, UK. david.jewell{at}bristol.ac.uk.
↵* An update is forthcoming with additional evidence about acupuncture, acupressure, and ginger.