In the Vignette titled "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," published in the April issue of the ARCHIVES (2001;137:512-513), an error was made in dose calculation. Each LI 160 tablet contained 900 µg of hypericins, and so the correct dose, as detailed on page 512, should have been "6 tablets (5400 µg)."
Error in Dose Calculation. Arch Dermatol. 2001;137(10):1380. doi:10.1001/archderm.137.10.1380