Bignonia-amarela, Bois-Pissenlit, Common Yellow Elder, Esperanza, Fausse Bignone, Geelklokkies, Guarã-guarã, Ipê-amarelo-de-jardim, Ipezinho-de-jardim, Rohi, Rohida Tree, Rohitaka, Sauco Amarillo, Sinos-amarelos, Tecoma Amarilla, Tecomans Stans, Trompette d'Or, Trumpet Bush, Trumpet Flower, Yellow Bells, Yellow Trumpet Bush, Yucuc, Xcanlol.


Overview Information

Tronadora is a shrub with long sharp leaves and yellow trumpet-like flowers. It is used to make medicine. Medicine is usually made from the leaves and stems, although the roots and flowers are also sometimes used.

People use tronadora for diabetes and digestion problems. However, there is no good scientific evidence to support these uses.

How does it work?

Early research suggests that tronadora might have anti-inflammatory effects.


Uses & Effectiveness?

Insufficient Evidence for

  • Diabetes.
  • Digestion problems.
  • Other conditions.
More evidence is needed to rate the effectiveness of tronadora for these uses.

Side Effects

Side Effects & Safety

When taken by mouth: There isn't enough reliable information to know if tronadora is safe or what the side effects might be.

Special Precautions & Warnings:

Pregnancy and breast-feeding: There isn't enough reliable information to know if tronadora is safe to use when pregnant or breastfeeding. Stay on the safe side and avoid use.



We currently have no information for TRONADORA Interactions.



The appropriate dose of tronadora 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 tronadora. 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.

View References


  • Al-Azzawi AM, Al-Khateeb E, Al-Sameraei K, Al-Juboori AG. Antibacterial activity and the histopathological study of crude extracts and isolated tecomine from Tecoma stans Bignoniaceae in Iraq. Pharmacognosy Res. 2012;4(1):37-43. View abstract.
  • Costantino L, Raimondi L, Pirisino R, et al. Isolation and pharmacological activities of the Tecoma stans alkaloids. Farmaco 2003;58:781-5. View abstract.
  • Kameshwaran S, Suresh V, Arunachalam G, Frank PR, Manikandan V. Evaluation of antinociceptive and anti-inflammatory potential of flower extract Tecoma stans. Indian J Pharmacol. 2012;44(4):543-4. View abstract.
  • Lakshmi C. Fingertip eczema to pooja flowers: Allergic contact dermatitis to Tabernaemontana divaricata and Tecoma stans. Indian J Dermatol Venereol Leprol. 2015;81(5):514-6. View abstract.
  • Larbie C, Owusu Nyarkoh C, Owusu Adjei C. Phytochemical and safety evaluation of hydroethanolic leaf extract of Tecoma stans (L.) Juss. ex Kunth. Evid Based Complement Alternat Med. 2019;2019:7417624. View abstract.
  • Meckes-Lozoya M, Ibanez-Camacho R. Hepatic glycogenolysis produced by intraperitoneal administration of total extract of Tecoma stans in rats. Arch Invest Med (Mex) 1985;16:387-9. View abstract.
  • Ramirez G, Zamilpa A, Zavala M, Perez J, Morales D, Tortoriello J. Chrysoeriol and other polyphenols from Tecoma stans with lipase inhibitory activity. J Ethnopharmacol. 2016;185:1-8. View abstract
  • Roman-Ramos R, Flores-Saenz JL, Partida-Hernandez G, et al. Experimental study of the hypoglycemic effect of some antidiabetic plants. Arch Invest Med (Mex) 1991;22:87-93. View abstract.

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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 2018.