The objective of this review was to assess the effects of calcium supplementation during pregnancy on hypertensive disorders of pregnancy and related maternal and child adverse outcomes. We searched the Cochrane Pregnancy and Childbirth Group trials register and the Cochrane Controlled Trials Register and we contacted study authors. Randomised trials comparing at least one gram daily of calcium during pregnancy with placebo. Data extraction was carried out and double entered. There was no evidence of any effect of calcium supplementation on stillbirth or death before discharge from hospital.
Optimum dosage requires further investigation.
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