The use of non-steroid anti-inflammatory drugs (NSAIDs)—such as acetylsalicylic acid (aspirin), ibuprofen, naproxen, diclofenac and celecoxib —starting from approximately 20 weeks of pregnancy or later, may cause rare but serious kidney problems in an unborn baby. This can lead to low levels of amniotic fluid and possible complications, such as impaired lung maturation and loss of joint movement (limb contractures) in the newborn baby.
Based on the outcome of the safety review, the agency is advising that pregnant women not use NSAIDs from approximately 20 to 28 weeks of pregnancy, unless advised to do so by their healthcare professional.
RECOMMENDATIONS FOR THE HEALTHCARE PROFESSIONALS: If the use of NSAIDs between 20 and 28 weeks of pregnancy is necessary, Health Canada recommends that they use the lowest effective dose for the shortest duration possible, and that they consider monitoring amniotic fluid levels via ultrasound if treatment extends beyond 48 hours. These recommendations do not apply to the use of low-dose (81 mg) aspirin, pediatric-only formulations (i.e., those only indicated for children less than 12 years of age) or NSAIDs administered directly to the eye.