H Tajik [1] , PhD F Shokouhi Sabet Jalali [2] , PhD Received: 29 Nov, 2006 Accepted 5 Nov, 2008 Abstract Background &Aims: Yarrow ( Achillea. millefolium ) has been used as a spice and medicinal plant in many ancient cultures from olden times. Today, biochemical investigations have shown different bioactive components responsible to medicinal and therapeutic properties of yarrow, in part...