it's interesting that the dried leaf formulation was more potent than the extract alone:
...dried leaves of the Artemisia annua plant delivers 40 times more artemisinin to the blood than does the drug based on the chemical extract of the plant.
Curiously, Absinthe (which is made from Artemisia - aka Wormwood) was a malaria preventative for the French Foreign Legion[1] which presumably did increase the willingness of patients to take it, at least.
Some African countries subsidize the price of malaria drugs. And NGOs who distribute these drugs are backed by big money such as Bill's foundation, WHO...