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TERIS – The Teratogen Information System – An authoritative clinical teratology resource to assess risks of medication and other exposures during pregnancy

TERIS was established by Dr. Jan M. Friedman in 1986, and is governed by an advisory board of global authorities in clinical teratology from the fields of medicine, genetics and epidemiology.

Mother and baby
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Learn about birth defects

Every infant has a 3-5% risk of being born with a birth defect.  Congenital anomalies caused by exposure to maternal medications or other environmental agents are especially important because they are potentially preventable.

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How can the TERIS Database help you?

TERIS is used to better understand the fetal risks associated with exposures to medications and other environmental agents during pregnancy. The information can be used to facilitate clinical decision making and patient counseling. 

COVID virus

New agents addedTERIS has posted free information on SARS-CoV-2 infection during pregnancy, COVID-19 vaccines and the use of other COVID-related medications in pregnancy.

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TERIS is a non-profit subscription-based service that is used and respected by clinicians and researchers around the globe.