Ma Huang (Ephedra): Uses, Forms, Dose and Safety

Name

Ma Huang (ephedra stem, Herba Ephedrae), recorded in the Shennong Bencao Jing.

Source and quality

Plant

The herbaceous stems of Ephedra sinica Stapf, E. equisetina Bunge, or E. intermedia Schrenk & C. A. Mey.

Where it is grown

Hebei, Shanxi and Inner Mongolia.

Harvest

Young stems cut in autumn.

Smell and taste

Slightly aromatic; astringent and slightly bitter.

Better grade

Dry, stout, light green stems with a substantial pith; bitter-astringent taste.

Processing

Dried, cut; used raw, honey-fried, or as a milder “floss.”

Nature and action

Acrid, slightly bitter, warm; enters lung and bladder. Induces sweating and releases the exterior; eases wheezing and cough; promotes urination.

When it is used

Wind-cold excess (no sweat)

Ma Huang is a strong sweating herb. It fits a wind-cold exterior-excess pattern: pores closed, no sweat, chills wrapping the surface. It is often paired with cinnamon twig (Gui Zhi) to strengthen the sweat. Because it also opens the lung, it is especially used when that same pattern comes with cough or wheeze — the classic pair is Ma Huang Tang in the Shanghan Lun.

Cough and wheeze from blocked lung qi

By spreading and descending lung qi it is a key herb for panting from obstruction, not from emptiness. With Xing Ren it appears in San Ao Tang. This is not the herb for weak, open panting with no obstruction.

Edema

It can move water by spreading lung qi and opening the waterways to the bladder, and it can still sweat the exterior, so it is used in early edema that still has an exterior pattern (Gan Cao Ma Huang Tang; Yue Bi Jia Zhu Tang with Bai Zhu).

Older texts also use it for wind-cold rashes, stuffy runny nose, and cold bi pain. Those are classical extensions, not extra reasons to self-dose ephedra.

Dose and forms

Decoction 3–10 g. Raw Ma Huang sweats more strongly (exterior wind-cold). Honey-fried Ma Huang is preferred when the main aim is wheeze, including some lung-heat panting in formula. Ma Huang floss is milder and is the usual choice for children, older people, or a weak constitution — still only in a proper formula.

Cautions

Do not use for deficient wheeze without lung obstruction. Use extreme caution in high blood pressure and insomnia: ephedrine can stimulate the central nervous system and raise blood pressure. In many countries ephedra products are restricted. This page is a TCM monograph, not permission to buy or take ephedra on your own.