Fool's parsley is an herb. The parts that grow above the ground are sometimes used to make medicine. Fool's parsley got its name because it looks a lot like young garden parsley. Be careful not to confuse the two, since fool's parsley may cause serious adverse effects.

Despite serious safety concerns, people take fool's parsley for stomach and intestinal problems, cholera, diarrhea, and seizures. There is no good scientific evidence to support these uses.

How does it work ?

There isn't enough reliable information to know how fool's parsley might work.

Uses & Effectiveness ?

Insufficient Evidence for

  • An infection of the intestines that causes diarrhea (cholera).
  • Diarrhea.
  • Seizure disorder (epilepsy).
  • Stomach and intestinal problems.
  • Other conditions.
More evidence is needed to rate the effectiveness of fool's parsley for these uses.

Side Effects

When taken by mouth: Fool's parsley is LIKELY UNSAFE. Avoid using it. It might cause serious, possibly life-threatening, poisoning.

Special Precautions and Warnings

When taken by mouth: Fool's parsley is LIKELY UNSAFE. Avoid using it. It might cause serious, possibly life-threatening, poisoning. Pregnancy and breast-feeding: It is LIKELY UNSAFE for anyone, including pregnant and breast-feeding women, to use fool's parsley due to the risk for serious adverse effects.

Interactions ?

We currently have no information for FOOL'S PARSLEY overview.


The appropriate dose of fool's parsley 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 fool's parsley. 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.

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CONDITIONS OF USE AND IMPORTANT INFORMATION: This information is meant to supplement, not replace advice from your doctor or healthcare provider and is not meant to cover all possible uses, precautions, interactions or adverse effects. This information may not fit your specific health circumstances. Never delay or disregard seeking professional medical advice from your doctor or other qualified health care provider because of something you have read on WebMD. You should always speak with your doctor or health care professional before you start, stop, or change any prescribed part of your health care plan or treatment and to determine what course of therapy is right for you.

This copyrighted material is provided by Natural Medicines Comprehensive Database Consumer Version. Information from this source is evidence-based and objective, and without commercial influence. For professional medical information on natural medicines, see Natural Medicines Comprehensive Database Professional Version.
© Therapeutic Research Faculty 2020.