The drug is not intended for use in women with a multiple pregnancy, such as a twin pregnancy, or other risk factors for preterm birth.

FORBES: New Drug To Prevent Pre-Term Birth Approved

In the midst of my demanding job as a tenure-track professor, I became pregnant naturally, but then had to take medical leave for a rare pregnancy complication, which ended in the stillbirth of twin daughters.

CNN: Women, consider freezing your eggs