An official website of the United States government.

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Biological Activity Cold-preventive

List of activity chemicals.
Click on column headings to sort table by that column. *Unless otherwise noted all references are to (Duke, 1992)
Chemical Name Dosage Reference
ASCORBIC-ACID 1-2 g/day Davies, S., and Stewart, A. 1990. Nutritional Medicine. Avon Books, New York. 509pp.
List of Activity Plants.
Click on column headings to sort table by that column.
Plant Name Common Name Chemical Count Total Parts Per Million
Eugenia floribunda Black rumberry; Camu-camu arbol; Camu-camu negro 1 5, 355
Eugenia uniflora Pitanga; Surinam Cherry 1 4, 230
Eupatorium perfoliatum Boneset 1 0
Euphorbia hirta Queensland Asthma Herb 1 443
Euphrasia officinalis Eyebright 1 67
Fagopyrum esculentum Buckwheat 1 0
Feijoa sellowiana Brazillian Guava; Guava Brazilera 1 3, 500
Ficus carica Fig; Figuier Commun (Fr.); Echte Feige (Ger.); Feigenbaum (Ger.); Fico (Ital.); Figueira (Port.); Higo (Sp.); Higuera Comun (Sp.) 1 42, 504
Filipendula ulmaria Meadowsweet; Queen Of The Meadow 1 0
Foeniculum vulgare Fennel 1 126, 748
Fragaria spp Strawberry 1 11, 298
Frangula purshiana Cascara Sagrada; Cascara Buckthorn 1 0
Fucus vesiculosus Bladderwrack; Kelp 1 516
Garcinia mangostana Mangosteen; Mangostin 1 510
Genipa americana Genipap; Jagua 1 2, 040
Gentiana lutea Yellow Gentian; Gentian 1 366
Ginkgo biloba Ginkgo; Maidenhair Tree 1 2, 370
Gliricidia sepium Mata Raton 1 3, 145
Glycine max Soybean 1 2, 740
Glycyrrhiza glabra Commom Licorice; Licorice; Smooth Licorice; Licorice-Root 1 2, 504