Эфедрасы – тұқымды бұталы өсімдік

Species of seed bearing shrub
Speciesbox
| image = Ephedra distachya (with cones) 2011 1. jpg
| status = LC
| status system = IUCN3.1
| genus = Ephedra
| species = distachya
| authority = L.
| synonyms ref = Its local names include somlatha. Ephedra distachya lives on grey dunes which are fixed and stable sand dunes that are covered in continuous vegetation.

Ephedra distachya subsp. distachya – central + southern Europe, southwestern + central Asia
Ephedra distachya subsp. helvetica (C. A. Mey.) Asch. & Graebn. – Switzerland, France, Italy, Slovenia, Austria

Ephedra is part of a group of plants called ‘gnetophytes’. These plants have hardly changed in the past 100 million years, and are thought to be relics of an ancient flora. The leaves of Ephedra are tiny and scale like. Gnetophyte leaves evolved independently from leaves in flowering plants. Ephedra produces the alkaloid ephedrine, which has been shown to interfere with insect thermoregulation and may also have effects on insect neurotransmitters. This may be the method by which the plant deters insect herbivores.

Ephedra distachya 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, 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. All parts of the plant contain up to 3% ephedrine.

Although Ephedra has many benefits, side effects include insomnia and a fast heart rate.