Dried aerial parts of the lungwort.
Quality is listed in the German Pharmacopoeia (DAB)
HMPC: not processed
ESCOP: not processed
Commission E: Negative adoption In the absence of proof of efficacy from scientific evidence at the time, negative adoption, assessed as a so-called "zero monograph" due to risks not to be expected. Dosage of 5 g/100 g tea in cough and bronchial tea