Wind heat, wind warm syndrome treated with TCM mint herb

What is mint herb(Bo He)? Medicinally, it refers to the dried above-ground part of Mentha haplocalyx Briq., which is a perennial weed, mostly growing in mountain, wetland, and riverside. The stem is erect, 30 to 60cm high, with underground rhizome growing sidelong. The whole plant sends out gentle flowery flavor. Leaves are opposite. Flowers are tiny, in the shape of the lips, and bearing small dark brown fruits after the blooming.

It is collected for medicinal purpose in summer and autumn when stem and leaf are thriving or flower in the third period. Usually they are reaped in batches in a sunny day, and then dried in the sun or in the shade.

What is it used for?
Also known as mentha, mint herb is believed by TCM as acrid, cool, and aromatic in nature and covers meridians of lung and liver.

Main functions are to diffuse wind-heat, refresh mind and improve eyesight, promote eruption, soothe a sore throat, and regulate qi flowing. Main uses and indications are colds and flu caused by wind-heat, early wind-warm syndrome, Headache, red eyes, pharyngitis, canker, nettle rash, measles, and fullness and discomfort in chest and hypochondrium.

Usual dosage is 3 to 6 grams. And please note that they should put in 5 minutes before the decoction is ready as its volatile property.