ods.od.nih.gov/factsheets/Valerian-HealthProfessional/ National Institutes of Health: Valerian ods.od.nih.gov/factsheets/Valerian-HealthProfessional/ Fact Sheet at Office of Dietary Supplements, NIH Office of Dietary Supplements: Valerian valerian root http://ods.od.nih.gov clinical research ods.od.nih.gov/factsheets/Valerian-HealthProfessional/ Valerian http://ods.od.nih.gov/factsheets/Valerian-HealthProfessional Valerian Valerian doesn’t appear to have any side effects