• G L Young and D Jewell.
• Barn Croft Surgery, Temple Sowerby, Penrith, Cumbria, CA10 1RZ. youngjckvg@compuserve.com
• Cochrane Db Syst Rev. 2000 Jan 1; 2002 (2): CD000121CD000121.

BackgroundMany women experience leg cramps in the second half of pregnancy.ObjectivesThe objective of this review was to assess the effects of treatments for leg cramps in pregnancy.Search StrategyWe searched the Cochrane Pregnancy and Childbirth Group trials register.Selection CriteriaRandomised trials of treatments for leg cramps, persisting for at least two weeks, in pregnancy.Data Collection And AnalysisTrial quality was assessed and data were extracted independently by two reviewers.Main ResultsThree trials involving 217 women were included. The trials were of moderate quality. Compared with placebo, calcium reduced leg cramps (odds ratio 0.29, 95% confidence interval 0.15 to 0.56). However there was significant heterogeneity between these results. One trial comparing sodium chloride with placebo showed a reduction in leg cramps (odds ratio 0.08, 95% confidence interval 0.03 to 0.24). Based on one trial, there appeared to be no difference between calcium and sodium chloride.Reviewer's ConclusionsBoth calcium and sodium chloride appear to help reduce leg cramps in pregnancy. However the results of the sodium chloride trial may no longer be relevant because of dietary changes.

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