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Stinging Nettle: Uses, Benefits, Dosage & Safety

Last updated: June 2026 · Reviewed by the FactoWiki Editorial Team for clarity and source accuracy

Quick summary

Stinging nettle is used in two ways: the root for prostate urinary symptoms and the leaf for allergies and joint discomfort. The prostate evidence is modest; the allergy and joint evidence is weaker.

What is Stinging Nettle?

Stinging nettle (Urtica dioica) is a common plant whose root and leaf are used differently. Nettle root is taken for the urinary symptoms of benign prostatic hyperplasia (BPH), often combined with saw palmetto or pygeum, while nettle leaf is used for seasonal allergies and joint discomfort. The fresh plant's sting comes from compounds in its hairs, which are neutralised by drying or cooking.

What Stinging Nettle is commonly used for

In supplements, Stinging Nettle is most often included for prostate & men's urinary health, men's vitality & testosterone support. It is used as nutritional support, not as a treatment for any medical condition — the distinction matters, because the claims on a sales page are often stronger than the evidence allows.

How Stinging Nettle works

For the prostate, nettle root is proposed to interact with proteins and hormones involved in prostate growth and to have anti-inflammatory effects, underlying its use for urinary symptoms. For allergies, nettle leaf is thought to have mild anti-inflammatory and antihistamine-like effects. In both cases the human evidence is limited and the mechanisms are not firmly established.

What the evidence says

Here's an honest snapshot of what published research suggests about Stinging Nettle — including where the evidence is limited.

Typical dosage used in studies

Prostate trials have used roughly 300-600 mg/day of nettle root extract, often within combination products. This is research information, not a recommendation.

Side effects and safety

Dried or cooked nettle is generally well tolerated; mild digestive upset is the most common effect. Handling the fresh plant causes its characteristic skin sting.

Medication interactions and who should avoid Stinging Nettle

Medication & safety check

Prostate and urinary symptoms should be assessed by a doctor rather than self-treated. Nettle may have mild effects on blood pressure and blood sugar and a mild diuretic action, so people on related medications (including diuretics, blood-pressure or diabetes drugs) should check first. Pregnancy data are limited.

This is general information, not personal medical advice. If you take any medication, confirm it's safe to combine with Stinging Nettle with your doctor or pharmacist first.

Sources & further reading

The evidence summary above is drawn from these sources. For general, authoritative background you can also consult:

Frequently asked questions

What is stinging nettle used for?

Root for prostate urinary symptoms (modest evidence) and leaf for allergies and joint discomfort (weaker evidence).

Root or leaf — what's the difference?

They're used for different things: root for the prostate, leaf for allergies and joints. Check which part a product uses.

Does nettle help BPH?

Some trials suggest a modest benefit for urinary symptoms, but it's often studied alongside other herbs, so its solo effect is unclear.

Is nettle safe?

Dried or cooked nettle is generally well tolerated. It has mild diuretic and blood-sugar/blood-pressure effects worth noting if you take related medicines.

Should I see a doctor for urinary symptoms?

Yes — these need medical assessment to rule out other causes.

Supplements that contain Stinging Nettle

On FactoWiki, Stinging Nettle appears in these reviewed products. Each review breaks down the full formula, pricing and safety.