Nettle NET-il

What are other names for this remedy?

Type of medicine: natural remedy

Scientific and common names: Urtica dioica, Urtica urens, Urticae radix, common nettle, nettle weed, stinging nettle, small nettle

What is nettle?

Nettle is a perennial plant that grows nearly 3 feet tall. The leaves are heart-shaped. The entire plant is covered with tiny stinging hairs, mostly on the leaves and stem. The whole plant is used medicinally.

What is it used for?

This remedy has been used to treat several conditions. Studies in humans or animals have not proved that this remedy is safe or effective for all uses. Before using this remedy for a serious condition, you should talk with your healthcare provider. There may be other uses that are not listed below.

Nettle has been used to treat:

• allergic rhinitis (itchy, runny nose from allergies such as hay fever)
• arthritis
• asthma
• benign prostatic hyperplasia (enlarged prostate)
• coughing
• insect bites
• joint and tendon pain
• skin rashes
• swelling and fluid retention

The US Food and Drug Administration (FDA) does not approve uses for natural remedies. The FDA does not inspect or regulate natural remedies the way they do prescription medicines.

How is it taken?

Nettle leaf may be eaten as a cooked vegetable. It must be cooked and not eaten raw.

Nettle can be taken by mouth as capsules, tablets, tinctures, juice, or tea. It also comes in the form of an ointment or cream to be put on the skin. Follow the directions printed on the product label or given by your healthcare provider.

What if I overdose?

Symptoms of an acute overdose have not been reported.

What should I watch out for?

Do not take stinging nettle if you have:

• bleeding problems
• heart failure
• diabetes
• high or low blood pressure
• kidney problems

Before taking nettle to treat an enlarged prostate, be sure to see your healthcare provider to rule out prostate cancer.

Touching the stinging nettle plant can cause skin irritation.

If you need emergency care, surgery, or dental work, tell the healthcare provider or dentist you are taking this remedy.

Diabetics: This remedy may affect your blood sugar level and change the amount of insulin or other diabetes medicines you may need. Talk to your healthcare provider about this.

Talk to your healthcare provider or pharmacist about any natural remedy that you are using or thinking about using. If your provider does not tell you how to take it, follow the directions that come with the package. Do not take more or take it longer than recommended. Ask about anything you do not understand. Remember:

• Natural remedies are not always safe.
• You should not take them if you are pregnant or breast-feeding without your healthcare provider's approval. They should not be taken by infants, children, or older adults without your provider's approval.
• They affect your body and may interact with prescription medicines that you take.
• Natural remedies are not standardized and may have different strengths and effects. They may be contaminated.

What are the possible side effects?

Along with its desirable effects, this remedy may cause some unwanted side effects. Some side effects may be very serious. Some side effects may go away as your body adjusts to the remedy. Tell your healthcare provider if you have any side effects that continue or get worse.

Life-threatening (Report these to your healthcare provider right away). If you cannot reach your healthcare provider right away, get emergency medical care or call 911 for help): Allergic reaction (hives; itching; rash; trouble breathing; chest pain or tightness in your chest; swelling of your lips, tongue, and throat).

The most common side effects include rash, diarrhea, sweating, itching, and upset stomach.

What products might interact with this remedy?

When you take this remedy with other medicines, it can change the way the remedy or the medicines work. Vitamins and certain foods may also interact. Using these products together might cause harmful side effects. Before taking this remedy, talk to your healthcare provider if you are taking:

• ACE inhibitors such as benazepril (Lotensin), captopril, enalapril (Vasotec), fosinopril, lisinopril (Prinivil, Zestril), quinapril (Accupril), and ramipril (Altace)
• antianxiety medicines such as alprazolam (Xanax), clonazepam (Klonopin), clorazepate (Tranxene), diazepam (Valium), lorazepam (Ativan), and oxazepam
• beta blockers such as acebutolol (Sectral), atenolol (Tenormin), carvedilol (Coreg), labetalol (Trandate), metoprolol (Lopressor, Toprol XL), nadolol (Corgard), pindolol, propranolol (Inderal LA), and sotalol (Betapace)
• calcium channel blockers such as diltiazem (Cardizem, felodipine, isradipine (DynaCirc CR), nicardipine (Cardene), nifedipine (Adalat CC, Procardia), and verapamil (Calan, Covera-HS, Isoptin SR, Verelan, Tiazac)
• diabetes medicines such as insulin, glipizide (Glucotrol, Glucotrol XL), glyburide (DiaBeta, Glynase PresTab), insulin, metformin (Glucophage), pioglitazone (Actos), repaglinide (Prandin), and rosiglitazone (Avandia)
• diuretics (water pills) such as amiloride, bumetanide, chlorothiazide (Diuril), furosemide (Lasix), hydrochlorothiazide (Microzide), spironolactone (Aldactone), torsemide (Demadex), and triamterene (Dyrenium) lithium (Lithobid)
• medicine that reduces the chance of blood clots forming such as aspirin, warfarin (Coumadin), cilostazol (Pletal), clopidogrel (Plavix), dalteparin (Fragmin), enoxaparin (Lovenox), and heparin
• natural remedies such as alfalfa, bitter melon, calendula, California poppy, capsicum, catnip, cat's claw, coenzyme Q-10, fenugreek, fish oil, German chamomile, ginger, ginseng, goldenseal, gotu kola, kava, L-arginine, lemon balm, parsley, plantain, sage, sassafras, Siberian ginseng, valerian, and willow bark
• nonsteroidal anti-inflammatory medicines (NSAIDs) such as diclofenac (Voltaren, Cataflam), ibuprofen (Motrin, Motrin IB, Advil), indomethacin (Indocin), ketoprofen, ketorolac (Toradol), nabumetone (Relafen), naproxen (Naprosyn, Anaprox, Aleve, Naprelan), oxaprozin (Daypro), piroxicam (Feldene), and sulindac (Clinoril)
• sleeping pills such as amobarbital (Amytal), butabarbital (Butisol), flurazepam, phenobarbital, temazepam (Restoril), triazolam (Halcion), zaleplon (Sonata), and zolpidem (Ambien)

If you are not sure if your medicines might interact, ask your pharmacist or healthcare provider. Keep a list of all your medicines with you. List all the prescription medicines, nonprescription medicines, supplements, natural remedies, and vitamins that you take. Be sure that you tell all healthcare providers who treat you about all the products you are taking.

Keep all natural remedies and medicines out of the reach of children.

This advisory includes select information only. The information was obtained from scientific journals, study reports, and other documents. The author and publisher make no warranty, expressed or implied, as to the information. The advisory may not include all side effects associated with a remedy or interactions with other medicines. Nothing herein shall constitute a recommendation for the use of any remedy. Ask your healthcare provider or pharmacist for more information.