Yarrow

Yarrow, any of about 115 species of perennial herbs constituting the genus Achillea in the family Asteraceae, and native primarily to the North Temperate Zone. They have toothed, often finely cut leaves that are sometimes aromatic. The many small white, yellow, or pink flowers often are grouped into flat-topped clusters.
*The dried leaves of sneezewort (A. ptarmica) are used to make a sneezing powder, and parts of yarrow or milfoil (A. millefolium) have been used for snuff and tea.*
Used for :
Yarrow is used for fever, common cold, hay fever, absence of menstruation, dysentery, diarrhea, loss of appetite, gastrointestinal (GI) tract discomfort, and to induce sweating. Some people chew the fresh leaves to relieve toothache
.
.
.
When taken by mouth: Yarrow is LIKELY SAFE for most people when taken in amounts commonly found in food. However, yarrow products that contain a chemical called thujone might not be safe. Yarrow is POSSIBLY SAFE when taken by mouth in the amounts found in medicine.