Updated 9/12/99
Preterm labor drugs, also known as tocolytics, are used to lessen or stop a pregnant woman's contractions. Typically, a pregnant woman is far from her due date and is experiencing cervical changes (effacement and/or dilation) in addition to the contractions. Click here for a table of preterm labor risk rates, by gestation. Tocolytics act to relax the muscles of the uterus, however they also may cause other side effects in the mother and fetus. Some side effects are serious.
Two of the most commonly prescribed preterm labor drugs are terbutaline (also known as Brethine) and Magnesium Sulfate. Terbutaline can be taken in the pill form, through a subcutaneous pump or through an IV. Magnesium Sulfate is typically administered in the hospital through an IV.
Links to other sites on the Web
Table of common preterm labor drugs
Pregnant Patient's Bill of Rights
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