Pregnancy category

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Pregnancy category

A system of classifying drugs according to their established risks for use during pregnancy. Category A: Controlled human studies have demonstrated no fetal risk. Category B: Animal studies indicate no fetal risk, but no human studies; or adverse effects in animals, but not in well—controlled human studies. Category C: No adequate human or animal studies; or adverse fetal effects in animal studies, but no available human data. Category D: Evidence of fetal risk, but benefits out-weigh risks. Category X: Evidence of fetal risk. Risks outweigh any benefits.
References in periodicals archive ?
Metformin (FDA pregnancy category B) is not recommended as first line treatment of cutaneous manifestations, for prevention of pregnancy complications, or for the treatment of obesity.
(11) As it is FDA pregnancy category X, associated with substantial teratogenicity, and can convert to a form with a prolonged half-life, (1,4) its use should avoided in women of childbearing age whenever possible.
"They are closely related medications [that] interfere with DNA synthesis and both are classified as FDA pregnancy category D," he said.
(3) Of the drugs that did mention "pregnancy," less than half were classified in accordance with FDA pregnancy category ratings.
Veregen Ointment 15% has not been tested in immunosuppressed patients or in nursing mothers and is an FDA pregnancy category C drug, Dr.
Although both Tdap and Td are FDA pregnancy category C, the vaccines are not considered to be contraindicated in pregnancy.
Other useful features include a Poison Control directory, Drug Information Center directory, Pharmaceutical Manufacturer directory, table of drugs by FDA Pregnancy Category, and a summary of new entities approved in 1994.
All formulations of acyclovir are assigned FDA pregnancy category C status, which indicates that safety in human pregnancies has not been determined; therefore, the drug should not be used during pregnancy unless the potential benefit justifies the potential risk to the fetus.
Its use should be avoided in pregnant women whenever possible as it is FDA pregnancy category X, associated with substantial teratogenicity, and can convert to a form with a prolonged half-life