Definitions of Common Pregnancy Recommendations for Medications


Posted on 12th January 2011 by admin in Uncategorized

If you are pregnant, you have probably already been told by your doctor, family and friends that there are new things to consider about the foods you eat and the medications you take.  The list of things to avoid can be daunting and in some cases it is hard to tell the truth from the wife’s tales.  In any case, here is some useful information I learned from my lactation consultant about terms that you may come across on certain medications and what these terms mean for you and your baby.


If you are thinking of taking a medication that states that it is compatible, then rest assured that clinical trials have found that drug to cause little to no risk to fetal development.

Probably Compatible

Drugs with this classification may or may not have been tested on human pregnancies.  However, the potential maternal benefit is considered greater than the unknown embryo/fetal risk.

Human Data Suggests Low Risk

Drugs with this classification have probably had limited human pregnancy experience.  These drugs are not likely to cause a significant risk of developmental toxicity at anytime during pregnancy.

Contraindication- 1st Trimester

Drugs with this classification have been found to cause developmental toxicity (growth retardation, structural defects, functional/behavior deficits, or death) if taken during the first trimester of pregnancy.  This drug should not be used during the first trimester.

Contraindications- 2nd and 3rd Trimesters

Drugs with this classification have been found to cause developmental toxicity if taken during the second and third trimesters.  These types of drugs should not be used during the second or third trimesters.


Any drug that is considered contraindicated are not safe to be taken during anytime during pregnancy and should be avoided completely.

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