The use of juniper is likely safe in most people when taken in daily recommended amounts. Common side effects of juniper include low blood pressure, frequent urination, irritation, and blisters. Juniper can also damage the kidneys and liver if taken in large amounts. Signs that you are taking too much juniper may include lower back pain, increased heart rate, high blood pressure, blood in the urine, purple urine, skin damage, and seizures.
Juniper may also lower blood sugar and therefore should be used with caution if you have diabetes or are taking medications that can lower blood sugar.
Juniper may increase the risk of bleeding. The dose may need to be adjusted for people who have bleeding disorders or are taking agents with similar bleeding properties (e.g., anticoagulants). Juniper can interact with the following medications:
You should see your doctor before taking juniper if you are breast-feeding or if you have diabetes, high or low blood pressure, bleeding disorders, or gastrointestinal conditions (such as an ulcer or a past history of bleeding in the intestinal tract).
Do not take juniper if you are pregnant or have a kidney condition. Stop taking juniper at least 2 weeks before surgery. Do not take juniper if you are allergic to it or to any plants in the Cupressaceae family.
Consult your health care provider if your symptoms do not go away or if they get worse while you are taking juniper. Before taking any new medications, including natural health products, speak to your physician, pharmacist or other health care provider. Tell your health care practitioner about any natural health products you may be taking.