I find many herbs help me with my asthma. There are so many herbs great for Respiratory problems that are safe to use. I usually use a combination product, but when nursing my baby I stuck mostly with the herb Marshmallow. Fenugreek and Thyme help me with my sinus headaches. But like I said there are so many that are just great for respiratory that get rid of the mucus. Taking the herbs helps me so I don't suffer as much. Give it a try! Also I drink Chamomile tea that helps me when I feel tight!