MG21 500 mg Myrrh + Costus Capsules are herbal anti-inflammatory medicine consisting of a composition of herbs like Myrrh and Costus. This herbal anti-inflammatory agent supports respiratory system, digestive system, wounds healing and headache. Costus is used for asthma, cough, gas, and severe intestinal diseases such as dysentery and cholera. It is also used as a tonic and to stimulate digestion.