1. Mullein Extract (Verbascum thapsus) — Airway Soothing
Mullein has one of the longest documented histories of any respiratory herb, used across Europe, Asia, and North America for centuries for coughs, bronchitis, and airway congestion. Its mucilaginous compounds soothe inflamed mucous membranes and its saponins support mucus expulsion. The Journal of Ethnopharmacology (2018) published a comprehensive review of Mullein's respiratory soothing properties, confirming centuries of traditional use with modern ethnopharmacological documentation. Mullein also has antispasmodic effects on bronchial smooth muscle, helping relieve the chest tightness associated with respiratory discomfort.
2. Bromelain Powder — Bronchial Inflammatory Balance
Bromelain is a mixture of proteolytic enzymes from pineapple stems (Ananas comosus) with well-documented anti-inflammatory and mucolytic properties in respiratory tissue. It breaks down inflammatory proteins in bronchial secretions, reducing mucus viscosity and airway swelling. Evidence-Based Complementary and Alternative Medicine (2016) published a clinical overview confirming Bromelain's efficacy in managing sinus and bronchial comfort. Its anti-oedema properties reduce swelling of bronchial mucosa that narrows airways and increases breathing effort.
3. Maritime Pine Bark Extract — Antioxidant Protection
Maritime Pine Bark (Pinus pinaster) contains oligomeric proanthocyanidins (OPCs) with antioxidant activity up to 50 times stronger than vitamin E by ORAC measurement. In lung tissue, OPCs neutralise reactive oxygen species from airborne pollutants, allergens, and environmental contaminants before they damage alveolar membranes and lung cell DNA. A randomised study in Phytotherapy Research (2017) confirmed Maritime Pine Bark's anti-inflammatory and antioxidant effects specifically in bronchial tissue. Pine Bark also supports healthy microcirculation in pulmonary vasculature, improving oxygen delivery to alveolar tissue.
4. Stinging Nettle Extract (Urtica dioica) — Upper Respiratory Support
Stinging Nettle inhibits multiple inflammatory pathways including NF-κB signalling, prostaglandin synthesis, and TNF-alpha production, providing comprehensive anti-inflammatory support for the upper respiratory tract. It also has natural antihistamine activity that complements Quercetin's mast cell stabilisation. A double-blind, placebo-controlled study in Phytotherapy Research (2019) confirmed significant improvements in upper respiratory passage comfort during allergen exposure within the first week of supplementation.
5. Tiger Milk Mushroom (Lignosus rhinocerus) — Lung Tissue Vitality
Tiger Milk Mushroom is a rare Southeast Asian medicinal fungus used for over 400 years specifically for respiratory conditions. Its beta-glucan polysaccharides stimulate macrophage activity and natural killer cell function in lung tissue, enhancing immune surveillance against respiratory pathogens and inflammation. Frontiers in Pharmacology (2020) published a review confirming Lignosus rhinocerus's immunomodulatory, anti-inflammatory, and lung tissue-protective properties. Its ergosterol content provides vitamin D precursor activity supporting immune function.
6. Quercetin Dihydrate Extract — Healthy Histamine Response
Quercetin stabilises mast cell membranes, reducing the IgE-triggered calcium influx that causes histamine release during allergen exposure — the mechanism responsible for sneezing, watery eyes, congestion, and airway irritation during allergy season. The Journal of Biological Regulators and Homeostatic Agents (2021) confirmed Quercetin's role in supporting healthy histamine levels and respiratory ease during seasonal shifts. Quercetin also inhibits leukotriene synthesis, providing anti-inflammatory support through a second complementary pathway.
7. BioPerine® — Enhanced Bioavailability (Up to 30%)
BioPerine® is a patented black pepper extract standardised to 95%+ piperine. Piperine inhibits cytochrome P450 3A4 enzymes and the P-glycoprotein efflux transporter that would otherwise rapidly metabolise plant compounds before absorption. The Journal of Nutritional Biochemistry (2020) documented BioPerine®'s ability to enhance herbal bioavailability by up to 30%. In practical terms: BioPerine® ensures significantly more of every other Pulmo Balance ingredient reaches your lung tissue and immune cells per capsule — making the entire formula more effective than taking any ingredient separately.