Blue Vervain Extract Sale! from $15.00 Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. An extract of organic Blue Vervain (Verbena hastata) in a 1 ounce amber Boston round with dropper Ing: organic Blue Vervain, Water, Alcohol blue vervain hot flashes menopause nervine Tweet Previous Next