Artemisinin, also called Ching-hao-su is a herbal medicine extracted from the sweet wormwood herb, also known as the Artemisia annua. Asians have been using the leaf for centuries to cure simple ailments such as colds and parasitic infections, but it has recently become big business for its effect on malaria.



Sweet wormwood is predominantly a Chinese herb, used for over a thousand years for treatment of a large variety of conditions including malaria. It has also been used to treat wound and skin diseases, and has been recorded as far back as 200 BC as a component of Chinese prescriptions for specific illnesses.

Although the origins of sweet wormwood are in Asia however, it is now grown throughout the temperate regions of the world, and reaches its best in midsummer. Although best known today for its use in treating malaria, its medical uses include treating bronchitis, fevers and general feelings of malaise. It is primarily grown now for the supplement industry and as a non-prescriptive natural cure for malaria. It is a common and favorite herb for Chinese herbalists and sold both in the herbal form and as the extracted artemisinin.

Although there is a wide variation in the artemisinin content of sweet wormwood according to where it is grown, and under different agricultural conditions, it is the main active ingredient. Chemically, it is a sesquiterpene lactone containing an endoperoxide bridge that will be discussed later.

In order to attain the optimum yield of active artemisinin, the plant has to be grown in the right site for cultivation and fed with the correct fertilizers, the proper strain of the herb must be selected and the method of extracting the active chemicals is also critical. These are secrets that have been used for centuries by the Chinese herbalists who are masters of their craft and are now known to the west and being applied to scientific production of the extract.

There are benefits of artemisinin other than its effect on malaria, but that is the best known of its uses, so let's have a look at that first. The herb has been used for a long time to treat parasitic infections, mainly flukes and worms that place great strains on the body having not only to feed these unwanted creatures, but also to excrete their waste and by-products. Malaria is caused by such a parasite, any one of four types in fact, and artemisinin appears to be just as effective on them.

The chemical contains what is known as an endoperoxide bridge that reacts with iron. The product of this reaction is a free radical, normally unwelcome in the body. However, malaria parasites contain high levels of iron, and the artemisinin reacts with that iron, forming free radicals that then go on to kill off the parasite. The free radicals that we take supplements to destroy, actually work for us in the destruction of the parasite that cause malaria. There is a silver lining in every cloud!

The reason that the medical world is so excited with this material is that malaria is second only to tuberculosis in its impact on world health. The problem is that the parasites that cause it have become largely resistant to the normal cures. They are not, however, resistant to the endoperoxide chemistry contained by artemisinin. It is now the major hope of world leaders in the fight to stop the inexorable increase in deaths due to malaria.

Now for the other applications. Another major use of the chemical is in the fight against cancer. Those cancers that involve iron rich cells can be disrupted by artemisinin by the same mechanism that kills off malaria bacteria. It is not only parasites that are susceptible to free radical action, but also human cells, and if these can be selectively destroyed, then it is a step forward towards a cure for cancer. Such a cure does not yet exist, but mechanisms such as the endoperoxide bridge provide a means of controlling at least some cancers, the best results being obtained with leukemia and colon cancer. That is not to say, however, that cures for these cancers are currently available since tests are still under way. However, it would do no harm to use sweet wormwood or the artemisinin extract as a supplement.

Cancer cells tend to accumulate iron because it is needed in the cell division process that cancer takes advantage of. However, if cancer cells could be persuaded to accumulate more surface iron, or were artificially exposed to it, then perhaps the endoperoxide mechanism would be more effective. Studies on this mechanism of controlling cancer are currently under way.

At a more mundane level, if you suffer from intestinal parasites, then one or two milligrams each day should see them off. It has also been effectively used to deal with colds, coughs and other general conditions, but most effectively against those that cause fever of one kind or another. It has been used in Chinese medicine as a form of 'cure-all' to be used when specific remedies failed. Its greatest current uses are, however, in cancer and especially malarial treatments.

You have to be careful with artemisinin since it can be toxic if taken in the wrong form. The least toxic, and most active, is the water soluble form known as artesunate. However, it lasts the least time in the body and has to get to work quickly. The oil soluble form, artemether, is the most toxic, but can cross from the blood to the brain. However, the parent form, artemisinin is the very safe itself, and can also cross the blood-brain barrier and while some tend to use a combination of the three, others prefer just the parent form.

If you take too high a dose you can suffer neurotoxicity which makes you wobble when you walk, and makes you impervious to certain levels of pain. However, such doses are next to impossible accidentally, and there have been very few reports of adverse effects in humans. It should not be used for at least a month after you have had radiation therapy because that tends to release iron that can be attacked to form free radicals.

The recommended dose is 200 - 100 mg daily though the doses should be spread throughout the day. It should also never be taken within 2 hours of any other antioxidant such as vitamins A, C and E. Otherwise artemisinin can be safely used for better health and wellness in the way that the Chinese have been using it for centuries. Artemisinin is available at your local or internet vitamin store.