Interventions for treating nausea and vomiting in pregnancy: a network meta-analysis and trial sequential analysis of randomized clinical trials.

Present evidence is conclusive on the therapeutic benefits of ginger in treating NVP. Although favorable results were obtained for several other interventions, the strength of evidence is very low. The results of this network meta-analysis should be interpreted with extreme caution as it might change with the advent of data from future head-to-head clinical trials.