Authors: Schempp, CM Muller, K Winghofer, B Schulte-Monting, J Simon, JC

Citation: Cm. Schempp et al., Single-dose and steady-state administration of Hypericum perforatum extract (St John's Wort) does not influence skin sensitivity to UV radiation, visible light, and solar-simulated radiation, ARCH DERMAT, 137(4), 2001, pp. 512-513

Authors: Schempp, CM Ludtke, R Winghofer, B Simon, JC

Citation: Cm. Schempp et al., Effect of topical application of Hypericum perforatum extract (St. John's wort) on skin sensitivity to solar simulated radiation, PHOTODERM P, 16(3), 2000, pp. 125-128

Authors: Schempp, CM Winghofer, B Ludtke, R Simon-Haarhaus, B Schopf, E Simon, JC

Citation: Cm. Schempp et al., Topical application of St John's wort (Hypericum perforatum L.) and of itsmetabolite hyperforin inhibits the allostimulatory capacity of epidermal cells, BR J DERM, 142(5), 2000, pp. 979-984

Authors: Schempp, CM Winghofer, B Langheinrich, M Schopf, E Simon, JC

Citation: Cm. Schempp et al., Hypericin levels in human serum and interstitial skin blister fluid after oral single-dose and steady-state administration of Hypericum perforatum extract (St. John's wort), SKIN PH APP, 12(5), 1999, pp. 299-304