Cypress is a tree or shrub. The branch, cone, and oil are used for medicine.

People use cypress for cough, the common cold, a prostate condition called benign prostatic hyperplasia (BPH), and many other conditions, but there is no good scientific evidence to support these uses.
When taken by mouth: There isn't enough reliable information to know if cypress is safe. It might cause side effects such as kidney irritation.

When applied to the skin: There isn't enough reliable information to know if cypress is safe or what the side effects might be.

Special Precautions & Warnings:

Pregnancy and breast-feeding: There isn't enough reliable information to know if cypress is safe to use when pregnant or breast-feeding. Stay on the safe side and avoid use.

Bleeding disorders: Cypress might prolong bleeding time and increase the risk of bruising and bleeding. If you have a bleeding disorder, use cypress with caution.

Allergies: People who are sensitive to cedar, peaches, or adhesive bandages might have allergic reactions to cypress.

Surgery: Cypress might increase the risk of bleeding during and after surgery. Stop taking cypress at least 2 weeks before a scheduled surgery.


There is interest in using cypress for a number of purposes, but there isn't enough reliable information to say whether it might be helpful.
Likely effective Effectiveness definitions
Possibly effective Effectiveness definitions
Likely ineffective Effectiveness definitions
Possibly ineffective Effectiveness definitions
Insufficient evidence Effectiveness definitions

Dosing & administration

The appropriate dose of cypress depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for cypress. 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 your pharmacist or physician or other healthcare professional before using.

Interactions with pharmaceuticals

Medications that slow blood clotting (Anticoagulant / Antiplatelet drugs)

Interaction Rating=Moderate Be cautious with this combination.

Cypress might slow blood clotting. Taking cypress along with medications that also slow clotting might increase the chances of bruising and bleeding.
Some medications that slow blood clotting include aspirin, clopidogrel (Plavix), diclofenac (Voltaren, Cataflam, others), ibuprofen (Advil, Motrin, others), naproxen (Anaprox, Naprosyn, others), dalteparin (Fragmin), enoxaparin (Lovenox), heparin, warfarin (Coumadin), and others.

Interactions with herbs & supplements

Herbs and supplements that might slow blood clotting: Cypress might slow blood clotting. Using it with other herbs and supplements that slow blood clotting might increase the risk of bleeding in some people. Other herbs and supplements that might slow blood clotting include angelica, clove, danshen, garlic, ginger, ginkgo, Panax ginseng, red clover, turmeric, and others.

Interactions with foods

There are no known interactions with foods.


Cypress contains chemicals called terpenes. These chemicals might change the way cells work. has licensed monographs from TRC Healthcare.
This monograph was last reviewed on 27/04/2021 04:29:58 and last updated on 10/12/2014 22:02:44. Monographs are reviewed and/or updated multiple times per month and at least once per year.
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