Is It Safe To Ingest Essential Oils?

by Bella Martinez October 16, 2020

Is It Safe To Ingest Essential Oils?

When it comes to frequently asked questions, “Is it safe to ingest essential oils?” is at the top of the list. This is no surprise, as this topic has been discussed and contended in many circles of essential oil users since aromatherapy’s inception. 

With so many varying opinions circulating, we want you to be able to make an educated decision based on facts.

Are you ready to find out more? Let’s dive right in. 

What is Internal Use?

Internal use is ingesting a substance, be it food, drink or essential oils. 

Common ways that people ingest EOs are by:

  • Taking them in capsules

  • Adding them to food

  • Adding them to drinks 

  • Taking drops

Upon ingestion, the oil comes into contact with the mucous membrane which covers the mouth, esophagus and stomach.

What Happens When Ingesting Essential Oils?

Upon ingestion, essential oils come into direct contact with vital organs such as the tongue, mouth, esophagus, stomach, etc. Because essential oils are miscible with fats, they attach to the mucous membrane which lines these organs. [1]

This can lead to irritation and damage because pure, undiluted essential oils are highly concentrated substances. For example, 250 pounds of steam distilled Lavender may yield 1 pound of Lavender essential oil. If you convert this number down to a drop, you will find that there is about ⅓ oz of lavender plant per drop of Lavender essential oil. Thus, adding 3 drops of Lavender oil to a cup of water equates to adding one ounce of lavender plant. 

Further Safety Concerns When Ingesting Essential Oils

Gentle oils such as Lavender have caused unwanted side effects when ingested, so imagine the damage that an oil with heightened safety precautions, such as Oregano, can and have done when taken internally. Here are a few such injuries caused by internal use that have been recorded.

  • In 2014, a 57 year old woman reported taking 5-10 drops of undiluted Oregano oil in water, a few times per day for four weeks. She then developed a rash on her palms and arms that lasted for 2-3 months. Her doctor diagnosed her skin irritation as a reaction to the essential oil ingestion. [2] 

  • In 2017, a 36 year old woman ingested various essential oils and essential oil blends by taking 3 drops at a time in water, 2-3 times per day over six weeks. After 2 weeks she developed acid reflux, an aching stomach, diarrhea and a sore throat. Distributors from the essential oil company said she was detoxing and recommended she keep taking oils internally. However, a  colonoscopy and endoscopy revealed that the lining in her stomach and esophagus had partially been eaten away. [3]

  • In 2018, a 47 year old woman reported applying one undiluted drop of Peppermint essential oil to the roof of her mouth daily. This caused her throat to swell. Her doctor diagnosed that her esophagus was damaged and no longer contracted or released when swallowing. [4]

Unfortunately, this is only the tip of the iceberg in terms of damage caused by internal use, and organizations like Aromatherapy United have been giving a voice to those who’ve been injured by essential oils. [5]

Analyzing injury reports have also revealed a common misuse of essential oils: adding them to water and drinking them. Oil and water do not mix. Therefore, when you add essential oils to water and drink them, the undiluted oil drops will come into direct contact with the mucous membrane lining your tongue, throat, esophagus, stomach, etc, causing injuries like those above.     

GRAS Doesn’t Mean You Can Safely Ingest 

The FDA classifies food additives according to their safety and essential oils are included in this system. Some fall into a category that is known as GRAS [6] (Generally Regarded as Safe), which is:

Any substance that is intentionally added to food is a food additive, that is subject to premarket review and approval by FDA, unless the substance is generally recognized, among qualified experts, as having been adequately shown to be safe under the conditions of its intended use, or unless the use of the substance is otherwise excepted from the definition of a food additive.

Common essential oils on the GRAS food grade list include: 

  • Basil

  • Camomile

  • Cardamom

  • Cinamon

  • Lavender

  • Lemon

  • Nutmeg

  • Peppermint

  • Vanilla

Many times, people justify that essential oils can be casually ingested because this list exists. However, the food and drink industry has set specific percentages at which these oils can be used as a flavoring agent either for safety, flavor intensity, or a combination of the two. These percentages are generally measured in parts per million (ppm). To give you an idea of what a ppm looks like, add 7-8 drops to a 60-gallon tub.

Most people do not have the equipment necessary to measure essential oils in parts per million in their home kitchens, and therefore are incapable of using essential oils “under the conditions of its intended use” as described by the FDA. 

In other words, the GRAS list is not a license to casually ingest essential oils. 

What About Using Essential Oils in a Capsule Or in Cooking?

When intaking essential oils in a capsule, the oil will most likely not come into direct contact with your organs until the capsule is broken down in your stomach. Once the capsule breaks down, the EO may then attach to your stomach lining, wherein lies the potential to do damage.

In cooking, essential oils are oftentimes more diluted than in other ways one might ingest oils. For those wanting to use EOs internally, this may seem like a good reason to cook with essential oils. But when you compare the cost of Lemon essential oil to a lemon found in the produce aisle, you will find that it is not as cost-effective to use essential oils in cooking. Not to mention, it’s not as delicious either. 

Edens Garden’s Stance On Internal Use

At Edens Garden, we’re passionate about high-quality, pure essential oil, which is why we go to great lengths to ensure all of our oils are 100% pure therapeutic grade. By GC/MS testing each batch of oil we offer and having each report approved by essential oil chemists and aromatherapists, we’re able to guarantee top-grade EOs.   

With that said, when dealing with severe health issues, it may be appropriate and effective to use essential oils internally. However, we cannot express to you enough that if you are using essential oils internally, you should consult an experienced aromatherapist. Many certified aromatherapists do not believe there should be ingestible essential oils, as ingesting them involves a lengthy intake of a client's health and an excess of aromatherapy experience. [7]

Essential oils are powerful substances that can have great health benefits when used properly but have the ability to cause damage when used improperly. With your safety in mind, Edens Garden does not recommend consuming essential oils.

However, if you're looking for recommendations on essential oils to diffuse or to apply topical (after proper dilution) some of our favorites are: Juniper Berry, Bergamot, Frankincense, Eucalyptus, Cinnamon Bark, Clary Sage and Tea Tree.


  1. Tisserand, Robert. “Interviewed on Ingestion, Dilution and Other Safety Issues.” Robert Tisserand, 9 Aug. 2015, 
  2. “Injury Reports | Aromatherapy United.” Aromatherapy United, 2017,,
  3. “Injury Reports | Aromatherapy United.” Aromatherapy United, 2017,,
  4. “Injury Reports | Aromatherapy United.” Aromatherapy United, 2018,,
  5. USFDA. Generally Recognized as Safe (GRAS).
  6. Clark, Jennifer Eden. “Aromatherapy Safety.” Alliance of International Aromatherapists, 2015,

Leave a comment (Comments will be approved before showing up)


Edens Garden

October 2, 2023 at 10:44 am

Hi Kimmie! We don’t recommend using essential oils in the mouth because they can irritate and damage the mucous membrane that covers the mouth and throat. Essential oils are used in products like toothpaste but at a dilution of parts per million which is safe but difficult to measure and achieve without the right equipment.


October 2, 2023 at 10:39 am

If adding 3-5 drops EG peppermint or EG Wintergreen to DIY toothpaste (coconut oil, baking soda, arrowroot) to a toothpaste tube, see here: sooo is this safe in our mouth. We’re not swallowing it but your article explains mouth.

Edens Garden

April 25, 2022 at 10:40 am

Hi Gera! As mentioned in this article, we do believe that ingestion is occasionally warranted. But because casual ingestion is common amongst essential oil users, we feel the need to share the dangers that ingesting essential oils can pose. We hope that clarifies things, but we’re happy to continue this discussion if you have any additional concerns 😊


April 25, 2022 at 10:34 am

I understand that safety is a priority for a business, therefore Edens Garden would never recommend something that would make even one person unsafe.

However, because one woman reacted to a drop of peppermint oil in 2018, is it really necessary to tell people that they should never take oils internally?

How is that any different than saying peanuts shouldn’t be taken internally because some people are allergic?

Bergamot oil, for example, has been used for hundreds of years to flavor tea. There is much evidence that many oils are safe in small percentages (1-5%), for aroma and flavoring.

Edens Garden

June 17, 2021 at 10:47 am

Hi Colleen! Yes, we just ask that you cite us 😊

Colleen Devey

June 17, 2021 at 10:40 am

Great info, Can I share it on my website?
Colleen D


October 22, 2020 at 9:12 am

Thank you for posting this article. I have always wondered about this very topic. I have friends who use blends made for “ingestion” by well known companies… and I always hesitate. EOs are powerful. I will forward this to friends and I hooe they refer to the references of information listed at the end. Excellent. Thank you.


October 22, 2020 at 9:03 am

THANK YOU for this!! I love EOs so much and have been buying EG oils exclusively for over five years now. It always made me feel really good when I would see the way EG prioritizes safety and proper use of EOs on their website. So many MLM companies promote internal ingestion and casual ingestion of their oils, not to mention UNDILUTED topical use. It’s scary to think of so many people using oils in an unsafe way, which is why I always recommend EG to friends. You always give the right directions for use, even when it means customers won’t use the oils as quickly. THANK YOU FOR YOUR INTEGRITY, Edens Garden.