Bignonia potosina is a climbing plant native to the arid regions of North America, known locally in the folk traditions of Mexico and the southern United States. Its leaves were traditionally gathered and prepared to help with respiratory ailments. Poorly documented in classic Western herbalist literature, it remains a plant of local knowledge, passed down orally more than in writing.
The leaves were used as an infusion or decoction in certain folk traditions to help with coughing episodes and bronchial congestion.
The plant is among the folk remedies used locally to soothe irritated airways, though its mechanisms have not been studied scientifically.
In certain traditional practices, the leaves were used as a steam inhalation to relieve a feeling of respiratory tightness.
A traditional use poorly documented scientifically: seek the advice of a health professional before any use. Avoid use in pregnant or breastfeeding women, for lack of sufficient data. Do not give to young children without medical advice. Do not exceed an occasional, short-term use without the supervision of someone knowledgeable about local plants.
Partner herbalists — available with the detailed notebook.
PFAF, Wikipedia