Not medicinally

Do not consume this in medicinal quantities - e.g. in a herbal remedy, as a tea/drink, as a supplement, or as an oil or tincture.

Source

Allspice (Pimenta)

Not recommended in medicinal quantities.
Safe

Angelica

Stimulates menstruation.
Source
Unsafe

Anise (Aniseed)

Can have an adverse reaction due to 'oestrogen activity', and if you have been recommended against birth control pills by a doctor you should avoid this.
Source
Careful

Aonori (Green Laver)

Wash if fresh. Be aware of other ingredients if used in bread or as a snack.
Safe
Source
Safe
Safe
Safe
Safe

Avocado Leaf

Toxic to many animals and can cause problems with lactation in animals. Studies are inconclusive on humans.
Source
Careful

Basil

Excessive quantities can cause a build up of toxic oils. In food is fine, but should not be consumed in concentrated or medicinal forms.

Source
Safe

Bay Leaf

Reportedly aids flow of breast milk but historically used as an abortifacient (substance to induce abortions) in large quantities.

Source
Careful
Safe
Safe
Safe
Safe
Safe
Safe

Borage

Not safe in oil or supplement form.
Careful
Safe
Safe
Safe
Safe
Safe

Caraway

In large quantities it can cause uterine contractions.

Source
Careful

Carrot

Wash thoroughly if using the skin.
Safe
Safe

Cayenne Pepper

If you suffer from acute heartburn brought on by pregnancy cayenne may make it worse.
Source
Safe
Safe
Safe
Safe
Safe

Chili (Chilli, Chile)

Reported to cause severe heartburn and nausea if the peppers are especially hot. Safe whole or as a seasoning/spice.
Safe
Safe
Safe
Safe

Cicely

Always wash thoroughly.

Strong infusions have been traditionally used to induce labour.

Source
Safe

Cinnamon

Can lead to uterine contractions in high quantities (in food should be fine).
Source
Safe

Clary Sage

Has been known to stimulate labour in oil form.
Source
Careful

Clove

Can lead to uterine contractions in concentrated doses.
Source
Safe
Safe
Safe
Safe
Safe

Cress

Wash carefully if cress cut direct from packet containing soil due to contaminants that might be present.
Careful

Cuban Oregano

Like true oregano, this should not be consumed as a tea or oil.
Safe
Safe

Cumin

Reported to lead to uterine contractions in high doses.
Source
Safe
Safe
Safe
Safe
Safe
Safe

Fenugreek

Has been used to induce labour and is considered to be an emmenagogue.

Source
Careful
Safe

Fig

Safe

Filé Powder

Filé Powder (also known as Filé Gumbo) is made from sassafras leaves, which are toxic in medicinal quantities.
Safe
Safe
Safe

Golpar (Hogweed)

Reported to have abortifacient qualities. The juice/sap from the plant is toxic and can cause third-degree burns in severe cases.
Unsafe
Safe
Safe
Safe
Safe

Herbal Tea

There's little information on the safety of herbal and green teas in pregnancy, so it's best to drink them in moderation.

Green tea contains caffeine.

Source
Careful

Hyssop

Okay in food, unsafe as a tea. Large quantities can reportedly cause miscarriage.
Source
Careful
Safe

Jasmine

Unsafe as a tea or oil as may cause contractions.
Source
Careful
Safe
Safe
Safe
Safe
Safe
Safe
Source
Safe
Safe

Lemongrass

Safe in food, unsafe in medicinal or concentrated forms.

Source
Careful
Safe

Long Coriander (Culantro)

Always wash thoroughly.

Source
Safe
Safe

Mace

Nutmeg and mace were thought to have abortifacient qualities, but it is safe in culinary quantities.
Source
Careful

Marjoram

High quantities can reportedly cause womb contractions, miscarriage, or premature labour.
Source
Safe
Safe

Mexican Oregano

Like true oregano, this should not be consumed as a tea or oil.
Safe
Safe
Safe
Safe

Nori (Laver)

Wash if fresh. Be aware of other ingredients if used in bread or as a snack.
Safe

Nutmeg

Nutmeg was thought to have abortifacient qualities, but it is safe in culinary quantities.
Source
Careful
Safe

Oregano

The oil or tea form of oregano are considered uterine stimulants.
Source
Safe

Parsley

High doses of parsley can stimulate the uterus and even cause miscarriage.
Source
Safe

Parsnip

Wash thoroughly if using the skin.
Safe

Pea

Wash carefully if using the outer pod.
Safe
Safe
Safe

Peppercorns

All varieties of peppercorn should be safe when used in food. High quantities are not recommended due to reported emmenagogue qualities.
Source
Safe
Safe
Safe
Safe
Safe
Safe
Safe

Radish

Wash carefully and do not use radish sprouts - these can contain bacteria which can't be removed through washing.
Source
Careful
Safe
Safe
Safe
Safe
Safe

Rosemary

Has diuretic properties in high doses. Some people believe it has emmenagogue properties as well.
Source
Safe
Safe

Saffron

In high doses it can act as a uterine stimulant.
Source
Safe

Sage

Concentrated doses (such as a tea or oil) can lead to abdominal pain.
Source
Safe
Safe
Safe
Safe
Safe
Source
Safe
Safe

Sorrel

Contains oxalic acid, which is harmful in large quantities.

Careful
Safe
Safe
Safe
Safe

Star Anise

Large quantities are not recommended, but in food or drink (such as chai) it is safe.
Safe
Safe
Safe
Safe
Safe
Safe
Safe
Safe

Thyme

Wild Thyme is also safe.
Safe
Safe

Turmeric

Turmeric supplements are not recommended.
Source
Safe
Safe
Safe

Wasabi

Wasabi in all forms is considered safe. Wash thoroughly if using the root whole.
Safe
Safe
Safe
Safe

Wintergreen

Can lead to kidney issues in high doses.
Source
Careful

Yam

Safe