Can pregnant women use insect repellent?
Yes, pregnant individuals can generally use insect repellents safely, but it is important to choose products with active ingredients that have been well-studied and approved for use during pregnancy. The U.S. Centers for Disease Control and Prevention (CDC) and the American College of Obstetricians and Gynecologists (ACOG) recommend EPA-registered repellents containing DEET (N,N-diethyl-meta-toluamide), picaridin (also known as icaridin or KBR 3023), IR3535 (3-[N-butyl-N-acetyl]-aminopropionic acid, ethyl ester), or oil of lemon eucalyptus (OLE) or its synthetic derivative para-menthane-diol (PMD). These ingredients have demonstrated favorable safety profiles in human studies when used as directed.
DEET remains the most extensively researched repellent for use in pregnancy; multiple observational studies have not identified increased risks of adverse pregnancy outcomes—including congenital anomalies, preterm birth, or low birth weight—when used appropriately. Picaridin and IR3535 are also considered safe alternatives with robust efficacy and minimal systemic absorption. Oil of lemon eucalyptus and PMD are effective against mosquitoes and ticks but are not recommended for children under 3 years of age; however, they are considered acceptable for use during pregnancy when applied topically as directed.
It is advisable to avoid unproven or “natural” repellents lacking rigorous safety data in pregnancy—such as garlic, vitamin B1 supplements, ultrasonic devices, or essential oils like citronella, lavender, or tea tree oil used alone—as these lack consistent evidence of efficacy and may pose unknown risks due to variable composition and potential skin sensitization. Additionally, pregnant individuals should apply repellents only to exposed skin or clothing—not under clothing, on cuts or irritated skin, or near eyes and mouth—and wash hands after application. Reapplication should follow label instructions, especially after swimming or heavy sweating.
As mosquito-borne infections—including Zika virus, malaria, dengue, and chikungunya—pose significant risks to both maternal and fetal health, effective bite prevention is a critical component of prenatal care in endemic areas. Pregnant individuals should consult their obstetric provider before travel to high-risk regions and consider integrated vector control strategies, such as wearing long-sleeved clothing, using permethrin-treated apparel or bed nets, and staying in air-conditioned or screened accommodations.