- What other names is Water Hemlock known by?
- What is Water Hemlock?
- How does Water Hemlock work?
- Are there safety concerns?
- Are there any interactions with medications?
- Dosing considerations for Water Hemlock.
Water hemlock grows in marshy, swampy areas of meadows; and along banks of streams, pools, and rivers. Accidental poisonings usually occur when water hemlock is mistaken for edible plants such as artichokes, celery, sweet potatoes, sweet anise, or wild parsnip.
Even though water hemlock is extremely poisonous, it is used as a medicine for migraine headaches, painful menstruation, and worms in the intestines.
Some people apply water hemlock directly to the skin for redness and swelling (inflammation).
Insufficient Evidence to Rate Effectiveness for...
- Migraine headaches.
- Painful menstrual periods.
- Intestinal worms.
- Skin redness and swelling (inflammation), when applied to the affected area.
- Other conditions.
Natural Medicines Comprehensive Database rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, and Insufficient Evidence to Rate (detailed description of each of the ratings).
Quick GuideVitamin D Deficiency: How Much Vitamin D Is Enough?
drooling, nausea, vomiting, wheezing, sweating, dizziness, stomach pain, flushing, weakness/tiredness (lethargy), delirium, and uncontrollable bowel movements. These are followed by more serious symptoms including trouble breathing, convulsions, heart problems, kidney failure, coma, and death.
Special Precautions & Warnings:It is UNSAFE for anyone to use water hemlock, but some people have extra reasons to avoid use.
Children: Use of water hemlock is UNSAFE and can be fatal, especially in children. Children can be poisoned by even small amounts of water hemlock. Some children have died after just using hollow water hemlock stems as peashooters, flutes, or whistles; or rubbing the plant on their skin.
Pregnancy and breast-feeding: Use of water hemlock is UNSAFE and can be fatal for both the mother and her unborn child.
Interaction Rating: Moderate Be cautious with this combination.
Talk with your health provider.
Water hemlock might have an effect like a water pill or "diuretic." Taking water hemlock 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.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.