Active enzymes in ajwain improve the flow of stomach acids, which can help to relieve indigestion, bloating, and gas. 
Ajwain can provide relief from coughing as well as clear mucus from your nose, both of which make breathing easier. It may also help to widen the bronchial tubes, which can help those with asthma. 
Ajwain can also help to soothe pain and swelling. Crushed fruit can be made into a paste and applied to the skin at the joints to treat arthritis pain.