FDAcategoryADefined in the health-lifesci.schema.org extension.
Canonical URL: http://schema.org/FDAcategoryA
A designation by the US FDA signifying that adequate and well-controlled studies have failed to demonstrate a risk to the fetus in the first trimester of pregnancy (and there is no evidence of risk in later trimesters).
Usage: Fewer than 10 domains
Schema Version 3.2