Active constituents
The major constituents in andrographis are diterpene lactones known as andrographolides. These bitter constituents are believed to have immune-stimulating, anti-inflammatory, fertility-decreasing, liver-protective, and bile secretion-stimulating actions.3 Though some older studies suggested andrographis was antibacterial, modern research has been unable to confirm this finding.4
A few double-blind clinical trials have found that andrographis can help reduce symptom severity in people with common colds.5 6 7 8 9 Though the earliest clinical trial among these showed modest benefits, later studies have tended to be more supportive. Standardised andrographis extract combined with eleuthero (Siberian ginseng), known as Kan jang, has also been shown in a double-blind clinical trial to reduce symptoms of the common cold.10
A preliminary uncontrolled study using isolated andrographolide found that while it tended to decrease viral load and increase CD4 lymphocyte levels in people with HIV infection, at the amount used, the preparation led to side effects, including headache, fatigue, a bitter/metallic taste in the mouth, and elevated liver enzymes (which returned to normal after the medication was stopped).11 It is unknown whether the andrographolides used in this study directly killed HIV or had an immune-strengthening effect.
Andrographis has proven helpful in combination with antibiotics for people with dysentery, a severe form of diarrhoea.12 It has also shown preliminary benefit for people with chronic viral hepatitis.13
References
1. Nadkarni AK, Nadkarni KM. Indian Materia Medica vol 1. Bombay: Popular Prakashan, 1976, 101–3.
2. Bensky D, Gamble A, Kaptchuk T. Chinese Herbal Medicine Materia Medica Revised Edition. Seattle: Eastland Press, 1993, 95.
3. Bone K. The story of Andrographis paniculata, a new “immune system” herb. Nutrition & Healing 1998;Sept:3, 4, 8, 9 [review].
4. Leelarasamee A, Trakulsomboon S, Sittisomwong N. Undetectable anti-bacterial activity of Andrographis paniculata (Burma) Wall. ex ness. J Med Assoc Thai 1990;73:299–304.
5. Thamlikitkul V, Dechatiwongse T, Theerapong S, et al. Efficacy of Andrographis paniculata, Nees for pharyngotonsillitis in adults. J Med Assoc Thai 1991;74:437–42.
6. Melchior J, Palm S, Wikman G. Controlled clinical study of standardized Andrographis paniculata extract in common cold–a pilot trial. Phytomedicine 1996;3:314–8.
7. Hancke J, Burgos R, Caceres D, Wikman G. A double-blind study with a new monodrug Kan Jang: decrease of symptoms and improvement in recovery from common colds. Phytother Res 1995;9:559–62.
8. Cáceres DD, Hancke JL, Burgos RA, et al. Use of visual analogue scale measurements (VAS) to assess the effectiveness of standardized Andrographis paniculata extract SHA-10 in reducing the symptoms of common cold. A randomized double blind-placebo study. Phytomedicine 1999;6:217–23.
9. Caceres DD, Hancke JL, Burgos RA, et al. Use of visual analogue scale measurements (VAS) to asses the effectiveness of standardized Andrographis paniculata extract SHA-10 in reducing the symptoms of common cold. A randomized double blind-placebo study. Phytomedicine 1999;6:217–23.
10. Melchior J, Spasov AA, Ostrovskij OV, et al. Double-blind, placebo-controlled pilot and phase III study of activity of standardized Andrographis paniculata Herba Ness extract fixed combination (Kan jang) in the treatment of uncomplicated upper-respiratory tract infection. Phytomedicine 2000;7:341–50.
11. Calabrese C, Berman SH, Babish JG, et al. A phase I trail of andrographolide in HIV positive patients and normal volunteers. Phytother Res 2000;14:333–8.
12. Thanagkul B, Chaichantipayut C. Double-blind study of Andrographis paniculata Nees and tetracycline in acute diarrhea and bacillary dysentery. Ramathibodi Med J 1985;8:57–61.
13. Chaturvedi GN, Tomar GS, Tiwari SK, Singh KP. Clinical studies on kalmegh (Andrographis paniculata) in infective hepatitis. J Int Inst Ayurveda 1983;2:208–11.
14. Bone K. The story of Andrographis paniculata, a new “immune system” herb. Nutrition & Healing 1998;September:3, 4, 8, 9 [review].
15. Calabrese C, Berman SH, Babish JG, et al. A phase I trail of andrographolide in HIV positive patients and normal volunteers. Phytother Res 2000;14:333–8.

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The information presented in Healthnotes is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or chemist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires September 2008.