Juniper

Related Terms

Cade oil, cedar, cedarwood, cedron, common juniper berry, Cupressaceae (family), empyreumatic oil, enebro, Geni?vre, ginepro, juniper bark, juniper berry, juniper bush, juniper oil, juniper tar, juniper wood, Juniperi Fructus, Juniperus californica, Juniperus communis, Juniperus deppeana, Juniperus mexicana, Juniperus occidentalis, Juniperus oxycedrus, Juniperus phoenicea, Juniperus scopulorum, Juniperus therifera, Juniperus virginiana, pencil cedar, Pinaceae, red cedar, Sabina, Wacholderbeeren, zimbro.

Background

Juniperus species have been used by many people around the world, but have also been recognized as toxic plants. Juniper is a flavoring in gin and other drinks and is used as a spice in small amounts. The plant displays significant toxicity to the kidneys and skin, which limits its use in medicine, except in small amounts. Juniper is safely used as a fragrance in soaps, shampoos, cosmetics, sachets and other products.
Juniper has been used in dyspepsia (upset stomach) as a berry tea, in eczema and other skin diseases as cade oil or juniper oil. Juniper is thought to be more effective and less irritating when combined with uva ursi, manzanita or pipsissewa. There is a long history of juniper use in Europe and China, but no published clinical trials.

Evidence Table

These uses have been tested in humans or animals. Safety and effectiveness have not always been proven. Some of these conditions are potentially serious, and should be evaluated by a qualified healthcare provider. GRADE *
These uses have been tested in humans or animals. Safety and effectiveness have not always been proven. Some of these conditions are potentially serious, and should be evaluated by a qualified healthcare provider. GRADE *
* Key to grades

A: Strong scientific evidence for this use
B: Good scientific evidence for this use
C: Unclear scientific evidence for this use
D: Fair scientific evidence for this use (it may not work)
F: Strong scientific evidence against this use (it likley does not work)
* Key to grades

A: Strong scientific evidence for this use
B: Good scientific evidence for this use
C: Unclear scientific evidence for this use
D: Fair scientific evidence for this use (it may not work)
F: Strong scientific evidence against this use (it likley does not work)

Tradition / Theory

The below uses are based on tradition, scientific theories, or limited research. They often have not been thoroughly tested in humans, and safety and effectiveness have not always been proven. Some of these conditions are potentially serious, and should be evaluated by a qualified healthcare provider. There may be other proposed uses that are not listed below.

Dosing

Adults (over 18 years old)
There is no proven safe or effective dose for juniper. Tinctures, tablets, capsules and other forms of berry extracts are commercially available. As an infusion, 2-3 grams of dried berries in 150mL of hot water, has been taken by mouth 3-4 times daily. For dyspepsia, 20-50 milligrams of the berry essential oil has been taken twice daily (for up to a maximum of 100 milligrams). This is usually taken as juniper berry tea.
Cade oil (juniper tar) or juniper oil has been typically used pure or partially diluted. It should be noted that application to the skin may be irritating or toxic to the skin. Volatile oil has been applied on the skin three or more times per day.

Safety

The U.S. Food and Drug Administration does not strictly regulate herbs and supplements. There is no guarantee of strength, purity or safety of products, and effects may vary. You should always read product labels. If you have a medical condition, or are taking other drugs, herbs, or supplements, you should speak with a qualified healthcare provider before starting a new therapy. Consult a healthcare provider immediately if you experience side effects.

Interactions

Interactions with Drugs
Juniper may increase the risk of bleeding when taken with drugs that increase the risk of bleeding. Some examples include aspirin, anticoagulants ("blood thinners") such as warfarin (Coumadin?) or heparin, anti-platelet drugs such as clopidogrel (Plavix?), and non-steroidal anti-inflammatory drugs such as ibuprofen (Motrin?, Advil?) or naproxen (Naprosyn?, Aleve?).
Juniper may lower blood sugar levels. Caution is advised when using medications that may also lower blood sugar. Patients taking drugs for diabetes by mouth or insulin should be monitored closely by a qualified healthcare professional, including a pharmacist. Medication adjustments may be necessary.

Attribution

This information is based on a systematic review of scientific literature edited and peer-reviewed by contributors to the Natural Standard Research Collaboration (www.naturalstandard.com).

Bibliography

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