The blue flag is found in all parts of the U.S. The ROOT is the medicinal portion. The flowers form a fine blue infusion which serves as a test of acids and alkalies.
The root in the green state is somewhat acrid, but when dried this is lost and the virtues of the root is unimpaired. It imparts its virtue to boiling water or alcohol. It is said to be held in much esteem by the southern Indians.
Its influence extends through the secemants, influencing the whole glandular and lymphatic system stimulating the flow of saliva and bile.
It is useful in impurity of the blood, constipation especially if chronic, rheumatism especially if chronic, dropsy, skin dis- eases, mercurial cache-xis, leuchorrhea, chronic, fiver troubles, sluggish circulation, and it has quite a reputation in the treatment of syphilis, secondary syphilis, scrofula, and other venereal dis- eases. Its best advantage is in chronic and torpid conditions.
Cold preparations quite freely influence the fiver, gall ducts, and bowels. Large doses are sometimes nauseating.
It is said to give good results in goiter.
As a laxative, only small doses are taken, the Fl. X being often used for this purpose.
In hot infusion, blue flag stimulates a good free outward circulation.
As an alterative for glandular and skin troubles, the following is recommended: all FE, 2 Dr. ea. dandefion, Jamaica sarsaparilla, yellow dock and burdock seeds, 20 drops FE prickly ash and 4 oz. of simple syrup. Dose—1 to 3 times daily.
Blue flag may be taken in substance, decoction, or tincture. The dose of the dried root is from 10 to 20 gr. The Fl X may be used for all the general purposes of the root.
Where there are irritable conditions, blue flag is NOT to be used.