Six investigated plant products alone or with phototherapy, with "moderate" evidence for the benefit of Gingko biloba and only weak evidence for other plant products.
Studies of vitamins found no evidence of benefit for cobalamin and folic acid along with phototherapy, and weak evidence for vitamin E plus phototherapy.
"Gingko's apparent efficacy without the need for phototherapy, thus eliminating the adverse events inherent with phototherapy, make it a therapeutic option worth investigating," they write, calling for more research into the use of the herb as well as L-phenylalanine.
SOURCE: BMC Dermatology, May 22, 2008.
