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Are Essential Oils Safe to Use During Pregnancy?


Are Essential Oils Safe to Use During Pregnancy?
Over the past few months, Plant Therapy has received a surge of questions about using essential oils safely while pregnant and nursing. Today we are going to discuss the topic of pregnancy safety in-depth, provide safe usage guidelines, and explore our updated Pregnancy and Nursing Safe Chart.

During Pregnancy

During pregnancy, our doctors frequently ask us questions like: “What are you eating?”, “Do you consume alcohol?”, and “Are you a smoker?” This is because our growing baby receives all of its life-forming nutrients from us, the mother. Whether or not we are eating right, exercising, or consuming caffeine during pregnancy can have drastic effects on our growing little one. Many of these variables have the potential to cross the placenta.
So what does the placenta do? “The primary function of the placenta in all species is to promote selective transport of nutrients and waste products between mother and fetus. Such transport is facilitated by the close approximation of maternal and fetal vascular systems within the placenta.” (1)

Things to Keep In Mind

“Essential oils by their very nature, being organic substances, will cross the placental barrier and have the potential to affect the fetus.” (2)
With this in mind, when choosing to use essential oils during the first trimester of your pregnancy, we recommend very limited use. This is because so much change is taking place within our bodies. In general, we do not recommend active or daily use of essential oils during the first trimester and it may be best to avoid using them altogether during this time. However, to assist with nausea you may consider adding a drop of Peppermint or Spearmint to a tissue and gently inhaling to relieve some of these symptoms.
essential oils and pregnancy

Other Variables to Consider

First let’s discuss the means of use, as we all know there are several different methods to use essential oils. Through topical application, only a small amount of oil will actually reach your bloodstream and the absorption rate is slow. Through diffusion, you will receive a small but continued dose of essential oils via inhalation. Steam inhalation offers a high but very short dose of essential oils. Lastly, when using a personal aromatherapy inhaler we receive a dose that is not as strong as steam inhalation but stronger than diffusion. (3)
If used during pregnancy, we must also reflect on how often we use essential oils. You may have heard us say with essential oils “less is more.” This is especially true when using essential oils during pregnancy. The more you choose to use essential oils, the more you will absorb, which may cross the placenta. It is best to limit essential oil usage to relieve symptoms such as fatigue, nausea, or occasional head tension. By limiting your use, you may still receive the wonderful benefits of essential oils without overexposing yourself or your growing baby.
Person placing essential oil drops into a diffuser

How to Dilute During Pregnancy

“The recommended dilution is 1% or less, for all skin applications… (For) bath(s)...(one) should add no more than 4 drops of essential oil." (2)
The last and most important factor to consider is the essential oils that you are using in your blends. We must remember that “Certain essential oils are contraindicated due to the nature of their chemical components, which may be too strong (and unnecessary) for (pregnancy).” (2)
It is very important that you only use essential oils that are safe during pregnancy. This is where our list of Pregnancy and Nursing Safe oils will be very helpful. This list was created by our team of Certified Aromatherapists here at Plant Therapy and has been approved by world-renowned essential oil safety expert, Robert Tisserand.

Variables Regarding Breastfeeding

To learn the safety precautions needed if you are deciding to use essential oils during breastfeeding, check out our in-depth post on our blog.
1. Bowen, R. “Transport Across the Placenta” 6 August 2000. Retrieved 25 October 2016. http://www.vivo.colostate.edu/hbooks/pathphys/reprod/placenta/transport.html
2. Christie, Deacon, Pickard, Price. “Pregnancy Guidelines: Guidelines for Aromatherapists Working with Pregnant Clients” 2013. Retrieved 25 October 2016. https://naha.org/assets/uploads/PregnancyGuidelines-Oct11.pdf
3. “Aromahead Institute’s Aromatherapy Certification Program” https://www.aromahead.com/courses/online/aromatherapy-certification-program
4. Smith, Anne. “Drugs and Breastfeeding” Breastfeeding Basics., Retrieved 10 October 2016. https://www.breastfeedingbasics.com/articles/drugs-and-breastfeeding
5. Tisserand, R., & Young, R. (2014). Essential Oil Safety (2nd ed.). Churchill Livingstone Elsevier.