The Medicinal Herb Info site was created to help educate visitors about the often forgotten wisdom of the old ways of treating illnesses. Many of today's drugs and medicines were originally derived from natural ingredients, combinations of plants and other items found in nature.

We are not suggesting that you ignore the help of trained medical professionals, simply that you have additional options available for treating illnesses. Often the most effective treatment involves a responsible blend of both modern and traditional treatments.

We wish you peace and health!


Scientific Names


  • Ipomoea jalapa L.
  • Convolvulaceae
  • Morning-glory family

Common Names

  • Morning Glory seeds

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Parts Usually Used

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Description of Plant(s) and Culture

Jalap is an annual, herbaceous vine; the tuberous root produces several brownish, twining stems which bear petioled, cordate leaves with a soft point. The purple flowers have a long, funnel-shaped corolla.

Other varieties: Wild jalap (I. pandurata) used as purgative like I. jalapa.
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Where Found

Found in one area of Mexico near Xalapa.
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Medicinal Properties

Cathartic, narcotic, emetic in large doses, vermifuge
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Biochemical Information

Pharbitin, rhamnose, angelic acid, pelargonic and cyanin
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Jalap is used as a purgative for constipation and for complete and rapid emptying of the bowels. It should not be used when intestinal irritation is present.

Also may be used for intestinal parasites.
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Formulas or Dosages

Decoction: use 1 tsp. root with 1 cup water. Take 1 cup a day, a mouthful at a time.
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An overdose can cause serious internal effects as well as purging and vomiting.
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Buy It! The Herb Book, by John Lust, Bantam Books, 666 Fifth Avenue, New York, NY. copyright 1974.

Buy It! Eastern/Central Medicinal Plants, by Steven Foster and James A. Duke., Houghton Mifflin Company, 215 Park Avenue South, New York, NY 10000

Buy It! Planetary Herbology, by Michael Tierra, C.A., N.D., O.M.D., Lotus Press, PO Box 325, Twin Lakes. WI 53181., Copyright 1988, published 1992

Buy It! American Folk Medicine, by Clarence Meyer, Meyerbooks, publisher, PO Box 427, Glenwood, Illinois 60425, 1973

Buy It! Webster’s New World Dictionary, Third College Edition, Victoria Neufeldt, Editor in Chief, New World Dictionaries: A Division of Simon & Schuster, Inc., 15 Columbus Circle, New York, NY 10023

Buy It! An Instant Guide to Medicinal Plants, by Pamela Forey and Ruth Lindsay, Crescent Books (January 27, 1992).

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