*Allergy to ragweed and related plants: Costus may cause an allergic reaction in people who are allergic to the Asteraceae/Compositae plant family. Members of this family include ragweed, chrysanthemums, marigolds, daisies, and many others. If you have allergies, be sure to check with your healthcare provider before taking costus.
==The benefits of Costus are==
Costus root contains chemicals * Cancer : Saussurea shows promise for protection against cancer. In a study published in Biological & Pharmaceutical Bulletin in 2004, for example, tests on human gastric cancer cells revealed that seem to kill worms Saussurea lappa may help suppress the growth of tumors and induce apoptosis (nematodesa type of programmed cell death essential for stopping the proliferation of cancer cells). Some researchers think * Heart Health : Several studies indicate that saussurea may enhance heart health. These studies include a report published in Journal of Advanced Pharmaceutical Technology & Research in 2013, which tested Saussurea lappa's effects on rats and determined that the chemicals herb may help fight myocardial injury. (Marked by damage to the heart's muscular tissue, myocardial injury is closely associated with heart attacks.)* Liver Health : Saussurea lappa may be beneficial in costus oil might prevent the airways from narrowingtreatment of liver disorders, and this effect lowers blood pressureaccording to an animal-based study published in Phytotherapy Research in 2010. In tests on mice, the study's authors found that treatment with Saussurea lappa helped reduce the liver damage associated with hepatitis.
* Worm (nematode) infections. In children, costus root reduces the number of worm eggs in the feces about as well as treatment with a usual medication called pyrantel pamoate. Egg reduction is a measure of the effectiveness of the treatment.
*Digestive problems.
*Gas.
*Angina*Asthma: Some researchers think that the chemicals in costus oil might prevent the airways from narrowing, and this effect lowers blood pressure.
*Cough.
*Dysentery.
*Cholera
* Source of [[Inulin]] prebiotic.
==Actions (TCM)==
*Promotes the movement of Qi, alleviates pain - stagnant qi of the stomach and/or spleen causing lack of appetite, abdominal pain, distention, nausea; liver or gallbladder qi stagnation causing flank pain, distention.