- Thryallis (Galphimia glauca), is a small evergreen shrub found in tropical regions of Mexico and Central America.
- Traditional medicine practitioners in Latin America use Galphimia glauca for the treatment of asthma and allergies, while Mexican traditional medicine uses Galphimia glauca as a sedative in the treatment of mental disorders.
- Thryallis is commonly used for the relief of allergy and allergic rhinitis (hay fever) symptoms such as runny nose, nasal congestion, and itchy, watery eyes. Galphimia glauca may be useful for the treatment of anxiety. However, more high-quality prolonged studies are needed.