Background

Thyme (Thymus vulgaris) is an herb with a distinct smell. The flowers, leaves, and oil are commonly used to flavor foods and are also used as medicine.

Thyme contains chemicals that might help bacterial and fungal infections. It also might help relieve coughing and have antioxidant effects.

People commonly use thyme for cough, patchy hair loss (alopecia areata), dementia, and many other conditions, but there is no good scientific evidence to support these uses.

Don't confuse thyme with wild thyme. These are two different plants.

Safety Safety definitions

When taken by mouth: Thyme is commonly consumed in foods. Thyme is possibly safe when used as medicine, short-term. It might cause allergic reactions, dizziness, and stomach upset in some people. There isn't enough reliable information to know if thyme oil is safe to use as medicine or what the side effects might be.

When applied to the skin: Thyme oil is possibly safe when used short-term. Some people might experience skin irritation.

When inhaled: There isn't enough reliable information to know if thyme oil is safe or what the side effects might be.

Special Precautions & Warnings:

Pregnancy and breast-feeding: Thyme is commonly consumed in foods. There isn't enough reliable information to know if thyme is safe to use in larger amounts while pregnant or breast-feeding. Stay on the safe side and stick to food amounts.

Children: Thyme is commonly consumed in foods. Thyme is possibly safe when taken as medicine for short periods of time. There isn't enough reliable information to know if thyme oil is safe to use as medicine or what the side effects might be.

Allergy to oregano and similar plants: People who are allergic to oregano or other Lamiaceae species might also be allergic to thyme.

Hormone-sensitive conditions such as breast cancer, uterine cancer, ovarian cancer, endometriosis, or uterine fibroids: Thyme might act like estrogen in the body. If you have any condition that might be made worse by exposure to estrogen, don't use thyme.

Surgery: Thyme might slow blood clotting. This might increase the risk of extra bleeding during and after surgery. Stop using thyme at least 2 weeks before a scheduled surgery.

Effectiveness

Dosing & administration

Thyme is commonly used to flavor foods. It is also used in soaps, cosmetics, and toothpastes.

In supplements, there isn't enough reliable information to know what an appropriate dose of thyme might be. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult a healthcare professional before using.

Interactions with pharmaceuticals

Drying medications (Anticholinergic drugs)

Interaction Rating=Moderate Be cautious with this combination.

Thyme can increase a chemical in the body called acetylcholine. Acetylcholine plays a big part in many important body functions. Some medications, called anticholinergic drugs, block the effects of acetylcholine in the body. Taking thyme might decrease the effects of anticholinergic drugs.

Estrogens

Interaction Rating=Moderate Be cautious with this combination.

Thyme might act like estrogen in the body. Taking thyme along with estrogen might decrease the effects of estrogen.

Medications that slow blood clotting (Anticoagulant / Antiplatelet drugs)

Interaction Rating=Moderate Be cautious with this combination.

Thyme might slow blood clotting. Taking thyme along with medications that also slow blood clotting might increase the risk of bruising and bleeding.

Various medications used for glaucoma, Alzheimer disease, and other conditions (Cholinergic drugs)

Interaction Rating=Moderate Be cautious with this combination.

Thyme can increase a chemical in the body called acetylcholine. Some medications that are used for glaucoma, Alzheimer disease, and other conditions, also increase acetylcholine levels. Taking thyme with these medications might increase the chance of side effects.

Interactions with herbs & supplements

Herbs and supplements that might slow blood clotting: Thyme might slow blood clotting and increase the risk of bleeding. Taking it with other supplements with similar effects might increase the risk of bleeding in some people. Examples of supplements with this effect include garlic, ginger, ginkgo, nattokinase, and Panax ginseng.

Interactions with foods

There are no known interactions with foods.