Pain Relief:
Traditionally, mullein root has been used for pain relief, particularly in the face and head, such as jaw pain, trigeminal neuralgia, and TMJ. It may also have mild narcotic-like properties, providing some pain relief throughout the body. 
Other Potential Benefits:
Mullein root may also have anti-inflammatory, antibacterial, and antioxidant properties. 
Urinary Tract Support:
Mullein root is believed to have diuretic and astringent properties, which can help tone the bladder muscles and reduce inflammation, potentially aiding in the treatment of UTIs and other infections. 
Respiratory Issues:
Mullein root, like the leaves, is known for its expectorant properties, helping to loosen and expel mucus from the respiratory system. It may also have anti-inflammatory and antimicrobial effects, which could be beneficial for conditions like bronchitis or asthma.