The Herb Cabinet 本草

艾叶 ài yè

Artemisia argyi · Chinese mugwort

Warm Bitter, Acrid LiverSpleenKidney

“The only herb in my cabinet I use more often as firewood than as tea — rolled, dried, and burned over the point instead of swallowed. Warmth, delivered by the leaf itself.” — Lao Xinglin

The herb you burn

Most of this cabinet goes into the pot; ai ye mostly goes into the moxa stick. The downy underside of the mugwort leaf, aged and ground into wool, rolls into the cigar-shaped moxa of moxibustion — smoldered a careful distance above a point until the warmth soaks in. The tradition considers this leaf the great warmer of channels: for cold-type pain that improves with a hot-water bottle, and classically in women's medicine for cold-pattern cramps^[1]. Its name is in the herb's oldest poetry — the "longevity grass" hung on doors each Dragon Boat Festival to ward off the year's ills.

What tradition says of the swallowed form

Taken internally (small doses, prescribed), ai ye warms the lower burner and, in the old gynecology, steadies cold-type bleeding and restless pregnancy — historic uses that belong entirely to professional hands, not home experiment^[1].

What research says

The leaf's essential oil is a genuine chemist's playground — reviews catalog anti-inflammatory and antimicrobial activity along with clear notes that the concentrated oil has real toxicity at dose^[2]. As for moxibustion itself, the honest summary lives on its own page: some encouraging trials, low certainty, pleasant warmth guaranteed. The Dragon Boat door-charm remains untested by any committee.

Where to be careful

Burning things near skin can burn skin — moxibustion belongs with trained hands, and the smoke bothers some lungs. The essential oil is not for internal use, ever^[2]. Internal ai ye in pregnancy is strictly a practitioner's call: the tradition used it there deliberately, which is precisely why amateurs must not^[1].

In the pharmacy

Dried gray-green leaves, silvery beneath; aged moxa wool the color of tobacco; and the familiar moxa rolls. Xiao Hu approves of this drawer in winter beyond all others — a warmed tiger is a loyal one.

Reviewed 2026-08-26