(2S)-(-)-isoxanthohumol is one of the most important prenylflavonoids found in hops. It exhibits an antiproliferative activity against human breast cancer cell lines, ovarian cancer, prostate cancer, and colon cancer cells. Isoxanthohumol shows an antiviral activity towards herpes viruses (HSV1 and HSV2) and bovine viral diarrhea virus (BVDV).