The inner bark of the root is more active than that of the trunk, but both are used. It yields its properties to boiling water, except its astringency, which property is yielded when alcohol is the menstruum used instead of boiling water.
Juglans is an active stimulating hepatic and cathartic. It relieves the portal system, disgorges the liver and cleanses the bowels. For catharsis it usually takes from four to eight hours, according to the dose given.
Juglans Cinerea tones the entire alvine mucous membrane, but especially that of the lower bowels, influencing peristalcis. The alcoholic fluid extract may be used in diarrhoea and dysentery. It cleanses the surface and leaves the parts toned and astringed. The aqueous extract being free from this astringency may be used to relieve chronic constipation. It is in this sphere one of the most valuable preparations. In relieving the portal circulation it also relieves hemorrhoids and rectal hemorrhages.
In dysentery, in small doses, it cleanses the bowels, relieves the portal circulation and tones the mucous membranes.
To prepare the syrup of Juglans, gather your bark from the fifth to the twentieth of April in the country. It is then strongest. Crush or chop fine. Then boil till quite strong and pour off and cover a second and third time to completely exhaust the strength of the drug. Then boil all together and evaporate to three-fourth or equality of one pint per pound of bark. Then for each twelve ounces add alcohol, two ounces, and sugar, four ounces.
It is well adapted to the treatment of skin eruptions. It is a tonic to both mucous membrane and dermoid tissue and slightly increases the action of the kidneys. It is one of the most valuable agents in the whole materia medica. It relieves the liver, proves gently cathartic and leaves the bowels soluble and toned. These are qualities that can be accorded to but few agents. By the use of this agent the faeces becomes more or less darkened. (3)