Using insect repellent during pregnancy

The short answer to this question is that it is probably better to use natural products (usually containing citronella oil) that are certainly safe for use in pregnancy.

The chemicals in most insect repellents do get absorbed into your bloodstream and may cross the placenta to your baby.

The most commonly used (and effective) insect repellent is a chemical known as DEET (diethyl-3-methylbenzamide). There have been some concerns raised about the safety of using this repellent in pregnancy or on young children, but it seems that if the concentration of DEET is no more than 10% of any product, (repellents are available with DEET concentrations of 5% to 100%) adverse toxic effects are extremely unlikely. However, in high doses DEET is toxic and ingestion of the chemical has been associated with seizures and death. If you’re traveling to a malarial area, it’s be better to use DEET as citronella only lasts for a short period of time, and malaria is potentially fatal.

If you’re in any doubt, ask your OB-GYN or nurse-midwife for advice. See insect bites for advice on how to treat bites for you and your child.

The information in this feature is intended for educational purposes only. If you have any concerns about your health, the health of your child or the health of someone you know, please consult with a doctor or other healthcare professional.