Written by Dr.M.D.Mazumdar, MD
Drugs which are harmful to the fetus and are unsafe to be used in pregnancy are called teratogens and the effects are known as the teratogenic effects. When taken in the 1st trimester, some drugs can cause birth defects and miscarriages. In the 2nd trimester or 3rd trimester, there are chances of intra-uterine fetal growth retardation, defects in the placenta, preterm labor etc.
The use of any medicine during pregnancy requires careful consideration of both risks and benefits by both the mother as well as the doctor.
Most medicines cross the placenta. While some do not affect the baby, others may cause birth defects, unwanted effects around the time of birth which may or may not be reversible or may cause problems in later life.
The list of drugs here are given in the alphabetical order. The type of drug and whether it affects the baby is also mentioned.
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