Hemlock
Hemlock

Background

Hemlock is a very poisonous plant. In fact, all parts of the plant are toxic. Hemlock is most poisonous during the early stages of growth in the spring, but it is dangerous at all stages of growth. The poisons in hemlock are so deadly that people have died after eating animals that had eaten hemlock parts.

Hemlock is native to Europe and western Asia and was introduced into North America as an ornamental plant. It is frequently found in the US and southern Canada. Hemlock typically grows along streams or rivers, and near fences, roadsides, ditches, abandoned construction sites, pastures, crops, and fields. Some people have been poisoned by hemlock after confusing it for harmless plants. Accidental poisonings have occurred when people mistook the plant for parsnip, parsley, wild celery, or anise.

Despite serious safety concerns, hemlock is used for bronchitis, whooping cough, asthma, arthritis, and other conditions, but there is no good scientific evidence to support these uses.
When taken by mouth: All parts of hemlock, including the seeds, flowers, and fruits, are UNSAFE. Hemlock is so poisonous it can cause death. If someone takes hemlock, he or she should get immediate medical attention. Side effects and toxicities include increased saliva, burning of the digestive tract, drowsiness, muscle pain, kidney damage, rapid breakdown of muscle tissue, rapid heart rate followed by a decreased heart rate, loss of speech, paralysis, unconsciousness, kidney failure, and death.

Special Precautions & Warnings:

It is UNSAFE for anyone to use hemlock, but hemlock is especially dangerous for people with the following conditions:

Pregnancy and breast-feeding: Use of hemlock is UNSAFE and can be fatal.

Children: Use of hemlock is UNSAFE and can be fatal, especially in children. Children can be poisoned by even small amounts of hemlock. Some children have died after eating leaves or using hollow hemlock stems as peashooters, flutes, or whistles.

Effectiveness

NatMed Pro rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, Ineffective, and Insufficient Evidence to Rate.
Likely effective Effectiveness definitions
Possibly effective Effectiveness definitions
Likely ineffective Effectiveness definitions
Possibly ineffective Effectiveness definitions
Insufficient evidence Effectiveness definitions
  • Anxiety.
  • Muscle spasms.
  • Teething in children.
  • Cramps.
  • Mania.
  • Bronchitis.
  • Whooping cough.
  • Asthma.
  • Other conditions.
More evidence is needed to rate the effectiveness of hemlock for these uses.

Dosing & administration

The appropriate dose of hemlock 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 hemlock. 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.

Interactions with pharmaceuticals

It is not known if Hemlock interacts with any medicines. Before taking Hemlock, talk with your healthcare professional if you take any medications.

Interactions with herbs & supplements

There are no known interactions with herbs and supplements.

Interactions with foods

There are no known interactions with foods.
 

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This monograph was last reviewed on 23/10/2022 05:34:05 and last updated on 20/08/2020 22:27:20. Monographs are reviewed and/or updated multiple times per month and at least once per year.
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