The mullein herb is a member of the snapdragon family that is commonly used to treat respiratory issues such as chest colds, asthma and bronchitis. The herb can be steeped in hot water and consumed as a tea to soothe respiratory issues.
The mullein herb leaf and flower can both be steeped as tea. Both parts of the herb contain mucilage, which soothes irritated mucus membranes. They also contain saponins, which break up mucus in the chest and lungs. The herb also has anti-inflammatory and anti-viral properties to reduce a patient's risk of joint disease and to boost the immune system.