Stinging nettle is a plant. People use the root and above ground parts as medicine.
Stinging nettle is used for many conditions, but so far, there isn’t enough scientific evidence to determine whether or not it is effective for any of them.
Stinging nettle root is used for urination problems related to an enlarged prostate (benign prostatic hyperplasia [BPH]). These problems include nighttime urination, too frequent urination, painful urination, inability to urinate, and irritable bladder.
Stinging nettle root is also used for joint ailments, as a diuretic, and as an astringent.
Stinging nettle above ground parts are used along with large amounts of fluids in so-called “irrigation therapy” for urinary tract infections (UTI), urinary tract inflammation, and kidney stones (nephrolithiasis). The above-ground parts are also used for allergies, hayfever, and osteoarthritis.
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Pregnancy and breast-feeding: Stinging nettle is LIKELY UNSAFE to take during pregnancy. It might stimulate uterine contractions and cause a miscarriage. It’s also best to avoid stinging nettle if you are breast-feeding.
Diabetes: There is some evidence stinging nettle above ground parts can decrease blood sugar levels. It might increase the chance of low blood sugar in people being treated for diabetes. Monitor your blood sugar carefully if you have diabetes and use stinging nettle.
Low blood pressure: Stinging nettle above ground parts might lower blood pressure. In theory, stinging nettle might increase the risk of blood pressure dropping too low in people prone to low blood pressure. If you have low blood pressure, discuss stinging nettle with your healthcare provider before starting it.
Kidney problems: The above ground parts of stinging nettle seem to increase urine flow. If you have kidney problems, discuss stinging nettle with your healthcare provider before starting it.
The appropriate dose of stinging nettle 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 stinging nettle. 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.