Health & Well-Being A-Z

Java Tea

Java Tea plant

Java tea is a shrub. The leaves and stem tips are used to make medicine.

Java tea is most commonly used by mouth for treating various conditions of the urinary tract, bladder, and kidneys. But there is limited scientific research to support these uses.

Is It Effective?

Effectiveness header

NatMed Pro rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, Ineffective, and Insufficient Evidence to Rate.

Insufficient evidence
  • High blood pressure.
  • Infections of the kidney, bladder, or urethra (urinary tract infections or UTIs).
  • Liver complaints.
  • Bladder and kidney disorders.
  • Gallstones.
  • Kidney stones.
  • Gout.
  • Osteoarthritis.
  • Achy joints (rheumatism).
  • Other conditions.

More evidence is needed to rate the effectiveness of Java tea for these uses.

Is it Safe?


When taken by mouth: Java tea is POSSIBLY SAFE when taken by mouth for up to 8 weeks.

Special Precautions & Warnings:

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

Surgery: There is a concern that Java tea might make blood pressure control difficult during surgery. Stop taking Java tea at least 2 weeks before a scheduled surgery.

Drug interactions


Interaction Rating=Moderate Be cautious with this combination.

Java tea might have an effect like a water pill or "diuretic." Taking Java tea might decrease how well the body gets rid of lithium. This could increase how much lithium is in the body and result in serious side effects. Talk with your healthcare provider before using this product if you are taking lithium. Your lithium dose might need to be changed.

Medications for high blood pressure (Antihypertensive drugs)

Interaction Rating=Moderate Be cautious with this combination.

Java tea seems to decrease blood pressure. Taking Java tea along with medications for high blood pressure might cause your blood pressure to go too low.

Herb interactions

Herbs and supplements that might lower blood pressure: There is some evidence that Java tea may lower blood pressure. Taking it along with other herbs and supplements that lower blood pressure might cause your blood pressure to drop too low. Some of these herbs and supplements include andrographis, casein peptides, cat's claw, coenzyme Q-10, fish oil, L-arginine, lycium, stinging nettle, theanine, and others.

Food interactions

There are no known interactions with foods.


The appropriate dose of Java tea 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 Java tea. 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.

Other names

Arjak, Barbiflore, Cat's Whiskers, Clerodendranthus spicatus, Clerodendrum spicatum, Java Thé, Kidney Tea, Kumos Kucing, Miasai Kucing, Misai Kuching, Moustaches de Chat, Ocimum aristatum, Orthosiphon, Orthosiphon aristatus, Orthosiphon Grandiflorus, Orthosiphon spicatus, Orthosiphon stamineus, Orthosiphonis Folium, Té de Java, Thé de Java, Vantulsi.


Information on this website is for informational use only and is not intended to replace professional medical advice, diagnosis, or treatment. While evidence-based, it is not guaranteed to be error-free and is not intended to meet any particular user’s needs or requirements or to cover all possible uses, safety concerns, interactions, outcomes, or adverse effects. Always check with your doctor or other medical professional before making healthcare decisions (including taking any medication) and do not delay or disregard seeking medical advice or treatment based on any information displayed on this website.

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