And quinols identified in Chimaphila umbellata, the source of EVI-1, reacted with several radicals in electron-paramagnetic-resonance studies (Pedersen, 2002).
According to Physicians Desk Reference for Herbal Medicine (Fleming, 2000), Chimaphila umbellata, the source of EVI-1, contains hydroquinone glycosides such as isohomoarbutin and homoarbutin, and naphthoquinone derivatives such as chimaphilin, which are known to have urinary antiseptic effects.
Components of eviprostat Component Code Proportion Ethanol extract from Chimaphila umbellata Nutt.
californica Berberis nervosa Blue Mountains Low Abies lasiocarpa Betula occidentalis Pinus albicaulis Taxus brevifolia Pinus contorta Philadelphus lewisii Taxus brevifolia Berberis nervosa Picea engelmannii Holodiscus discolor Chimaphila menziesii Acer glabrum Chimaphila umbellata
Physocarpus malvaceus Vaccinium scoparium Rubus parviflorus Sorbus scopulina Amelanchier alnifolia Lonicera involucrata Rosa spp.