Powdered Stinging Nettle
»Powdered Stinging Nettle is Stinging Nettle reduced to a fine or very fine powder.It contains not less than 0.8percent of total amino acids,not less than 0.05percent of b-sitosterol (C29H50O),and not less than 3µg per g of scopoletin (C10H8O4),calculated on the dried basis.
Packaging and storage— Preserve in tight containers,protected from light and excessive heat.
Labeling— The label states the Latin binomial and,following the official name,the parts of the plant contained in the article.
Botanic characteristics— [NOTE—The test is carried out under a microscope using chloral hydrate solution.]The powder is yellowish to brownish gray,and shows several fragments of net and pitted vessels with a strongly varying diameter,usually between 50and 150µm.Few,if any,pitted bast fibers are present.Clearly pitted wood fibers,about 200to 800µm in length,and thin-walled parenchyma cells,sometimes containing compounded calcium oxalate crystals and occasionally with single crystals and fragments of cork consisting of flat-shaped,thin-walled cells,are also present.
Other requirements— It meets the requirements of the tests for Identification,Microbial enumeration,Foreign organic matter,Total ash,Pesticide residues,Content of total amino acids,Content of b-sitosterol,and Content of scopoletinunder Stinging Nettle.
Auxiliary Information— Staff Liaison:Gabriel I.Giancaspro,Ph.D.,Senior Scientist and Latin American Specialist
Expert Committee:(DSB)Dietary Supplements:Botanicals
USP28–NF23Page 2123
Pharmacopeial Forum:Volume No.29(4)Page 1289
Phone Number:1-301-816-8343