Lungwort (pulmonaria officinalis) has long been used to treat breathing conditions like asthma, bronchitis or tuberculosis. It can also treat stomach and intestinal conditions, as well as kidney and urinary tract conditions, such as UTIs. Tinctures are a food supplement with healing properties, not a medicine. If you have serious issues you need treating, contact your GP. Dosage: 20 - 40 drops are diluted in a bit of water and taken once to three times a day.