A growth on grains of diseased rye plants. When taken into the stomach, it has a tendency to promote contraction of the womb and of the blood-vessels. On account of the first of these effects, it is given after child-birth, to aid in the expulsion of the placenta (afterbirth), and to check hemorrhage. Its causing contraction of the blood-vessels is a reason for its being prescribed for various hemorrhages, and also in chronic inflammations; especially of the spinal marrow. The wine of ergot is the preparation most employed. Dose, of it or of the fluid extract, from half a teaspoonful to two teaspoonfuls, in water.