Reviewed on 9/27/2021

What Is Nettle and How Does It Work?

Nettle suggested uses include as a mild diuretic (sap), and to decrease benign prostatic hyperplasia (BPH) symptoms (root).

Nettle is possibly effective for the listed uses.

Nettle is available under the following different brand and other names: stinging nettle, and Urtica dioica.

Dosages of Nettle

Suggested Dosing

  • 4 g whole herb steeped 10 minutes hot water, three to four times daily
  • 770 mg dried extract orally twice daily

Dosage Considerations – Should be Given as Follows:

  • See "Suggested Dosing"

What Are Side Effects Associated with Using Nettle?

Side effects of nettle include:

  • Diarrhea
  • Allergic reactions (rare)

This document does not contain all possible side effects and others may occur. Check with your physician for additional information about side effects.

What Other Drugs Interact with Nettle?

If your doctor has directed you to use this medication, your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor, health care provider or pharmacist first.

  • Nettle has no known severe or serious interactions with other drugs.
  • Nettle has moderate interactions with at least 72 different drugs.
  • Nettle has mild interactions with at least 55 different drugs.

This information does not contain all possible interactions or adverse effects. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share this information with your doctor and pharmacist. Check with your health care professional or doctor for additional medical advice, or if you have health questions, concerns or for more information about this medicine.

What Are Warnings and Precautions for Nettle?


This medication contains nettle. Do not take stinging nettle or Urtica dioica if you are allergic to nettle or any ingredients contained in this drug.

Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center immediately.


  • Diabetes, impaired cardiac or renal function

Effects of Drug Abuse

  • None

Short-Term Effects

  • See "What Are Side Effects Associated with Using Nettle?"

Long-Term Effects

  • See "What Are Side Effects Associated with Using Nettle?"


  • None

Pregnancy and Lactation

  • There is no information available about use of nettle during pregnancy or while breastfeeding. Consult your doctor.
Medscape. Nettle.

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