Nutmeg Oil in Pregnancy and Breastfeeding: What Sources Say

Nutmeg oil in pregnancy is a question the published record mostly does not answer, and that gap is the answer. Our own safety copy says nutmeg oil is unsuitable for anyone pregnant or nursing, and the sources read for this page give no pregnancy dose, no diffuser schedule and no skin dilution for it. What follows is what the authorities actually say, what they do not, and who to ask.

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What the search covered, and what it did not find

On 2026-10-28 the search covered MotherToBaby (the teratology information service run by OTIS), NHS hospital trust leaflets, the Tisserand Institute, the US National Toxicology Program, EFSA and the poison-centre literature. It did not find a pregnancy study of nutmeg essential oil by any route. Nearly everything published about nutmeg and pregnancy concerns the ground spice in food or in large amounts. The first job of this page is to keep those two things apart: a pinch in a baked dish, a spoonful swallowed on purpose, and a bottle of concentrated oil are three different exposures.

What MotherToBaby says about the spice

In a MotherToBaby blog post of 10 November 2021, nutmeg eaten in small amounts as a spice in food has no known increased risk in pregnancy or breastfeeding. The same post adds that nutmeg was used in the past in folk medicine to induce abortion, and for that reason advises avoiding high-level exposure in both situations. Read what that does and does not say. It is a statement about the spice, it gives no gram figure, and it cites the folk use as the reason for caution rather than a measured outcome. The search found no controlled human data behind the abortion claim, and this page does not repeat it as established.

What it says about essential oils in general

A separate MotherToBaby post of 6 April 2016 says that for many essential oils there are few studies of use in pregnancy and breastfeeding, and for many none at all, and that this "doesn't mean that the oils are necessarily helpful or harmful; it means that they haven't been studied." It says topical products usually do not lead to large absorption, and it lists swallowing among the factors that raise the rate of absorption. It does not address inhalation. Its advice is to talk to a healthcare provider before using a product, and it gives MotherToBaby's own line (866-626-6847) for questions.

That post is about essential oils as a class, not nutmeg oil. The inference for nutmeg oil is ours: with no pregnancy data and a hazard profile that includes the constituents below, the cautious reading is the one our copy already takes.

The constituents that make the oil a different case

Two compounds in nutmeg oil have regulatory histories that matter to anyone weighing exposure. The US National Toxicology Program lists safrole as reasonably anticipated to be a human carcinogen (first listed in 1981), on the basis of liver tumours in two rodent species, and notes that no epidemiological studies of human cancer and safrole were identified. Its methyleugenol profile uses the same category (first listed in 2002) on oral animal studies, and names nutmeg and mace oils among natural sources. These are animal findings from dosed rodents; they are not pregnancy findings, and they are not a measurement of what a person inhales from a diffuser.

How much of each is in an oil varies. EFSA's feed-additive panel analysed seven batches of nutmeg oil, all from Indonesia, and reported safrole at 1.69 to 2.30% and methyleugenol at 0.18 to 0.33% (EFSA, 2023), classified the oil as a category 1B carcinogen on the safrole content, and called it an irritant to skin and eyes and a skin and respiratory sensitiser. That is the composition of those batches only. The batch on our published COA lists density, refractive index and optical rotation and nothing about constituents, so no safrole or methyleugenol figure can be claimed for our oils, and a buyer who needs one should ask in writing before ordering.

Where the Tisserand Institute lands

Robert Tisserand's post on nutmeg oil (undated; the comments run from 2019 to 2021) argues that a sweeping ban on the oil is a misleading oversimplification and that diluted topical use and moderate diffusion fall within his guidelines. It does not mention pregnancy. The Institute's general safety guidelines list being pregnant, having epilepsy or asthma, or taking prescribed medication as reasons to get a doctor's or suitable practitioner's advice before using essential oils at all. So the two positions are compatible: one says the oil need not be banned for the general user, the other says pregnancy is a situation that needs individual advice. The Institute's chart of recommended topical maximums, an image on the same page posted in November 2019, does give one: 0.2% for East Indian nutmeg oil in pregnancy and 1% for West Indian oil (Tisserand Institute, 2019). Our pages do not say which type our oils are, and our own process copy says nutmeg oil is unsuitable for anyone pregnant or nursing, so this page offers neither figure as a target. Ask an obstetric clinician or midwife first.

What a hospital trust says about direct contact

York and Scarborough Teaching Hospitals NHS Foundation Trust's aromatherapy page lists women in the first trimester as not to have direct contact with essential oils, under its exclusion criteria for the trust's own service, and sends readers to their midwife. The page cites no studies, so it is a local service rule, not a trial result, and other trusts word theirs differently. It is useful for one reason: it shows how a UK maternity service handles the category, which is by routing the decision through a midwife.

Breastfeeding

MotherToBaby's 2021 post covers breastfeeding for the spice in the same terms as pregnancy: small food amounts, avoid high-level exposure. The search found no source on nutmeg oil in a nursing parent or infant. Infants are the harder case on the poisoning side, because a baby within reach of the bottle is a swallowing risk; the children's page covers that.

What to bring to the appointment

The right people are an obstetric clinician or midwife, and for a question about a specific exposure that has already happened, MotherToBaby. If anyone, pregnant or not, has swallowed the oil, the Poison Help line is 1-800-222-1222 in the United States, described by poison.org as free, expert and confidential. The ingestion page covers why.

What the law says about why we do not give you a regimen

FDA decides whether a product is a cosmetic or a drug by its intended use, and its page current as of 11 September 2024 says aromatherapy claims such as helping a consumer sleep move a fragrance into the drug category. We sell a fragrance material and make no medical claims, so we do not describe pregnancy symptoms or a way to use the oil for them. That is a limit of this site, not a verdict that anything is or is not suitable.

Our position

Our oils are sold neat, our copy says unsuitable in pregnancy and nursing, and nothing fetched for this page gives a reason to soften that. For the skin-route numbers that apply to everyone else, including why a published fragrance-industry limit sits below the top of our own 0.5% to 2% copy, read the medications page, and for the general overview see the safety basics. If you are pregnant and want a spice scent at home, ask your midwife first, and consider whether a scent from the kitchen shelf does the job.

Nutmeg Essential Oil bottle

Nutmeg Essential Oil

Nutmeg Essential Oil from our own shop, in sizes from 0.5 oz to bulk.

From $10.99

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Sources & Further Reading