Herbal medicine

Herbal medicines use active ingredients from natural substances. If you are interested in trying any of them, first make sure the therapist is properly qualified, then talk to your pulmonary doctor. Some herbal medicines may contain steroids (a powerful drug that can have unpredictable side effects) or estrogen. Doctors are cautious because they don't thoroughly understand what effects the treatments might have and they want to watch carefully for potentially risky drug interactions.