Calamus is an herbal medicine used to treat heartburn, bloating, upset stomach (nausea), belly cramping, and constipation. It may also be used to increase your appetite. Calamus has not been studied in humans and the different types of Calamus are often confused. Because of this, Calamus use is not suggested.
Other names for Calamus include: Acorus, Sweet root, Sweet myrtle, Sweet sage, and Sweet flag.
Ask your doctor, nurse, or pharmacist if you need more information about this medicine or if any information in this leaflet concerns you.
Tell your doctor if you
Talk with your caregiver about how much Calamus you should take. The amount depends on the strength of the medicine and the reason you are taking Calamus. If you are using this medicine without instructions from your caregiver, follow the directions on the medicine bottle. Do not take more medicine or take it more often than the directions tell you to.
Keep all medicine locked up and away from children. Store medicine away from heat and direct light. Do not store your medicine in the bathroom, near the kitchen sink, or in other damp places. Heat or moisture may cause the medicine to break down and not work the way it should work. Throw away medicine that is out of date or that you do not need. Never share your medicine with others.
Do not take Calamus without talking to your doctor first if you are taking:
Calamus use is not recommended because the types are hard to identify (9).
Stop taking your medicine right away and talk to your doctor if you have any of the following side effects. Your medicine may be causing these symptoms which may mean you are allergic to it.
You may have the following side effects, but this medicine may also cause other side effects. Tell your doctor if you have side effects that you think are caused by this medicine.
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10. Vargas CP, Wolf LR, Gamm SR et al: Getting to the root (Acorus calamus) of the problem (letter). J Toxicol Clin Toxicol 1998; 36(3):259-260.