What did Artemisia Annua for Malaria look like?

A documented treatment method, not a physical device. Fresh Artemisia annua herb is cold-soaked in water and then wrung to extract the juice for oral administration.

How did Artemisia Annua for Malaria work?

Fresh Artemisia annua → cold-water soak → wring out the juice → oral administration → artemisinin absorbed through the GI tract → enters the bloodstream → acts on the malaria parasite → the endoperoxide bridge of artemisinin is cleaved by iron within the parasite → free radicals are generated that kill the parasite.

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青蒿抗疟记载

Artemisia Annua for Malaria

The earliest recorded use of Artemisia annua (qinghao/青蒿) for malaria, documented by Ge Hong in 340 CE. The instruction to cold-soak the herb in water ('以水二升渍') rather than boil it preserved the heat-labile peroxide bridge of artemisinin — a detail that directly inspired Tu Youyou's Nobel Prize-winning discovery.

青蒿抗疟

Scientific Principle

Artemisinin's endoperoxide bridge (O-O) is cleaved by ferrous iron (Fe²⁺) released from hemoglobin digestion by the malaria parasite (Plasmodium). This homolytic fission produces carbon-centered free radicals that alkylate critical parasite proteins and membrane lipids, killing the parasite. The cold extraction method ('绞取汁') avoided thermal decomposition of the peroxide bridge — the key insight that Tu Youyou extracted from Ge Hong's text in 1971. WHO has recommended artemisinin combination therapy (ACT) as first-line malaria treatment since 2006, saving millions of lives.