Tinctura Leptandrae.—Tincture of Black Root.
Related entry: Leptandra (U. S. P.)—Leptandra
Preparation.—Take of black root, in moderately fine powder, 3 ounces; diluted alcohol, 1 pint, or a sufficient quantity. Form into a tincture by maceration or percolation, as explained under Tincturae, and make 1 pint of tincture.
Action, Medical Uses, and Dosage.—(See Leptandra.) This preparation is aperient and cholagogue, and is employed in various derangements of the biliary organs. It is also added to medicines for summer complaint, chronic diarrhoea, remittent fever, etc. The dose is from ½ to 2 fluid drachms, 2 or 3 times a day (J. King).