Flector and Pregnancy
If you are expecting, Flector (diclofenac patch) may not be the best choice for you, as the full risks are unknown. Although animal studies do not show significant risks associated with the use of diclofenac (the active ingredient in Flector), human studies on nonsteroidal anti-inflammatory drugs in general show that these medications can cause problems in pregnant women. If pregnancy occurs while you are using Flector, discuss the potential risks with your healthcare provider.
The Flector® Patch (diclofenac patch) is a prescription pain medication. It may present some risks to the fetus when taken during pregnancy, but the full risks are currently not known.
The U.S. Food and Drug Administration (FDA) uses a pregnancy category system to classify the possible risks to a fetus when a specific medicine is taken during pregnancy. Pregnancy Category C is given to medicines that have not been studied in pregnant humans but do appear to cause harm to the fetus in animal studies. Also, medicines that have not been studied in any pregnant women or animals are automatically given a pregnancy Category C rating.
In general, animal studies have failed to show significant risks associated with the use of diclofenac (the active ingredient in Flector), although some studies with high doses showed some potential problems. These studies used doses that were high enough to cause maternal toxicity, which may have contributed to the fetal toxicity. Flector has not been studied in pregnant humans.