To date there are reports on secondary metabolites of 21 Argyreia spp.:
Simple pyrrolidines alkaloids, tropane alkaloids, nicotine (4 spp.): Argyreia capitata, Argyreia hookeri, Argyreia mollis, Argyreia nervosa.
Calystegines (6 spp.): Argyreia androyensis, Argyreia capitata, Argyreia hookeri, Argyreia mollis, Argyreia onilahiensis, Argyreia vahibora; calystegine-negative: Argyreia nervosa.
ß-Carboline alkaloids (1 sp.): Argyreia hookeri.
Ergoline alkaloids (14 spp.): Argyreia acuta, Argyreia barnesii, Argyreia cuneata, Argyreia hainanensis, Argyreia hookeri, Argyreia luzonensis, Argyreia mollis, Argyreia nervosa, Argyreia obtusifolia, Argyreia philippinensis, Argyreia ridleyi, Argyreia rubicunda, Argyreia splendens, Argyreia wallichii.
Loline alkaloids (1sp.): Argyreia mollis; loline-negative: Argyreia capitata, Argyreia hookeri, Argyreia nervosa.
Long chain alkyl ester of p-coumaric acid (1 sp.): Argyreia populifolia.
Flavones (1 sp.): Argyreia sericea.
Flavonols and their glycosides (2 spp.): Argyreia capitata, Argyreia cuneata.
Flavonol sulfates (3 spp.): Argyreia capitata, Argyreia mollis, Argyreia nervosa.
Triterpenoids (2 spp.): Argyreia capitata, Argyreia nervosa, Argyreia populifolia. Eckart Eich
Nearly all taxa in the genus intergrade geographically into neighboring taxa with the exception of the widespread coastal species, Calystegia soldanella (L.) R. Br. Almost half of the genus is endemic in California, U.S.A.; the exceptions noted in the generic description as "in North America" all refer to the Californian endemics. It is impossible to draw clearly defined specific limits, and intermediate forms are always found where two taxa approximate geographically.