• Clinical data 90%
  • Efficacy 80%
  • Security 90%
  • Toxicity 10%


Heterotheca inuloides Cass

General appearance

Lively grass, sometimes annual, hairy, from 0.5 m to 1.5 m in height. Leaves alternate, whole, pubescent, with serrated edge; the inferior ones are oval or lanceolate, of 3 to 10 cm in length, with acute or obtuse apex, often with petiole very widened and articulated in the base; the upper ones are smaller sessiles. Flowers in chapters that form corymbose groups, bell-shaped involucre, with numerous hairy bracts, shorter external ones; flat receptacle; the peripheral flowers are feminine, lingulated, with yellow corolla; the plants are hermaphroditic, tubular, also yellow. The fruits are achenes; those that come from lingual flowers do not have vilano or have one with pocar ​​and short bristles; those of central flowers have numerous long, whitish or reddish bristles.

Its resemblance to the enula, inula for the ancient Romans, caused the scientists to designate this species with the name of inuloides. and the similarity of its medicinal applications with those of the arnica of the country or false arnica.

This Mexican plant, which belongs to an exclusive genre of the New World, has been used as a natural medicine for a long time. The decoction and the alcoholic tincture of leaves and flowers are applied externally, whether in forms of poultices, plasters or frictions, to heal wounds, bruises and sprains and to relieve muscular pains. Its internal use, however, is restricted to certain female ailments; thus, cooking is recommended to relieve menstrual cramps and matrix inflammation.

Although it has been proven that Mexican arnica is not as effective an anti-inflammatory as the European one, it has the advantage of not producing side effects: it does not irritate the digestive tract, does not raise blood pressure and does not have toxic action on the heart. for which the foreign species has been banned from herbal medicine as an internal medicine. The difference consists, apparently, in the fact that the Mexican plant does not contain the glycosides to which the European company owes its cardiotonic properties.

Major chemical constituents

Essential oil, flavonoids, coumarins, resin, chlorophyll, tannin, fats, yellow coloring substances, gallic acids, oxalic acid, gum, starch, bitter principle and alkaloid.

Medicinal uses of Heterotheca inuloides

It is used in alcoholic tincture for contusions. It serves as an anti-inflammatory on areas hit, bruises, disinfectant in cuts and sores. Relieves bronchitis, piles and kidneys. It is also used for rheumatism, sprains, gum inflammation, neuralgia, throat irritation, phlebitis, and slow healing wounds.

According to some authors cure vertigo, epilepsy, heart palpitations, and other diseases from weakness.


It presents an antimicrobial, anti-inflammatory, diuretic activity.


They were not found.

Side effects

They were not found.

More information: http://www.medicinatradicionalmexicana.unam.mx/monografia.php?l=3&t=Heterotheca_inuloides&id=7120

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