My husband has asthma. He uses peventative inhalers along with inhalers when an attack occurs. When the attack is severe he will go into the bathroom and turn the shower on hot, to inhale the steam.  Even doing all of this, the attack will continue until I prepare him the Breathe Easy Herbal Tea.  Within minutes after drinking the tea the asthma settles down. I ALWAYS carry a tea bag with me.  I never leave the house to go anywhere without the tea.  IT IS A LIFE SAVER!!!!!