Alkaloids and saponins
All parts of Erythrina variegata contain alkaloids. Leaves and bark contain erythrinine, a poisonous alkaloid that acts upon the nervous system and has a narcotic effect. The leaves, bark and seeds contain saponins (Orwa et al., 2009). However, the leaves of coral tree have no known toxicity to cattle (NFTA, 1993; Ghosal et al., 1972).