Ephedra distachya

Ephedra distachya (syn. E. vulgaris) is a shrub in the family Ephedraceae, about 25 cm to 50 cm high, that grows in southern Europe and parts of western and central Asia. Its local names include somlatha.

Uses
It is used to relieve acute muscular and rheumatic pains (when it is called teamsters' tea), as a stimulant, and in the cardio tonics in Ayurveda. It is sometimes identified with the legendary drug soma, as described in the Avesta and the Rig Veda, the respective ancient sacred texts of the Zoroastrian and Hindu faiths.

Ephedrine, the salt of an alkaloid, is obtained from its dried branches and is used as a stimulant, often to control asthma. It was isolated from the plant by Nagayoshi Nagai in 1885.