Answer:

senna

AnswerCrossword Clue
SENNAIngredient in some medicinal teas
SENNAKind of tea used medicinally
SENNAMedicinal shrub
SENNAPlant used in herbal remedies
SENNAMedicinal plant
SENNADrug-yielding shrub
SENNADrug-yielding plant
SENNACathartic drug
SENNA1990-91 World Grand Prix champion
SENNAPlant yielding a cathartic drug
SENNAMedicinal herb