Speedwell is considered to be diuretic, expectorant, stomachic, tonic. Speedwell was once a highly regarded in England as a healthy, relaxing, herbal tea and tonic. As with most astringent, bitter herbs, an infusion of speedwell can be used as a wash for troubled skin. Recent studies have shown Speedwell tea may be an effective preventative treatment for ulcers. It is most often used been used for coughs and congestion.