Methods: double-blind randomisedcontrolledtrial.Pregnantwomenwithnausea,whofirstattendedtheantenatal
clinic atorbefore17weeksgestation,wereinvitedtoparticipateinthestudy.Overa3-monthperiod,70womenwere
randomised toreceiveeitherginger1g/dayorvitaminB640mg/dayfor4days.Subjectsgradedtheseverityoftheir
nausea usingavisualanaloguescale,andrecordedthenumberofvomitingepisodesinthe24hoursbeforetreatment
and during4consecutivedayswhiletakingtreatment.At7-dayfollow-up,womenreportedanychangesintheseverity
of theirsymptoms.