English Plantain (Plantago lanceolata), also known as ribwort plantain, has a long history of traditional use for supporting respiratory health, including the bronchial system. Historical records from European herbal medicine indicate that plantain leaves were used to soothe coughs, reduce irritation in the throat, and promote recovery from bronchitis and other respiratory complaints. Its traditional application typically involved teas, syrups, or tinctures made from the leaves.

The rationale for its use is believed to stem from its mucilage content, which can have a soothing, demulcent effect on irritated mucous membranes, as well as mild anti-inflammatory properties. Some small laboratory and animal studies have noted mild anti-inflammatory and antimicrobial effects, but robust clinical trials in humans are lacking. The European Medicines Agency (EMA) lists Plantago lanceolata as a “traditional herbal medicinal product” for the relief of throat irritation and dry cough, reinforcing its role as a traditionally used remedy rather than one with strong scientific backing.

In summary, while English Plantain is widely used in traditional herbal medicine for the bronchial system and coughs, scientific evidence supporting its efficacy is limited. Its use for bronchial support is best characterized as traditional with low to moderate supportive evidence.