Carbocysteine is a compound formed when the iodoacetic acid reacts with sulfhydryl groups in proteins. It has been used as an anti-infective nasal spray with mucolytic and expectorant action.

Rabdosiin is a natural product, and has anti-allergic activity, anti-HIV activity and inhibition on DNA topoisomerase.

Dehydroandrographolide Succinate is a traditional Chinese medicine used in the treatment of pneumonia, respiratory tract infection.