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Mullein — Capsules — 90 Count — Respiratory Comfort, Mucus Clearance, Breathing Support*
LifeSource Vitamins Mullein delivers a balanced, research-driven formula designed to support respiratory comfort, improve mucus clearance, and promote breathing ease. Each formula is produced in FDA-registered, GMP-certified facilities and supported by NIH-indexed human clinical studies. Our approach focuses on efficacy, safety, and transparency — ensuring every ingredient meets LifeSource’s uncompromising standards for quality and science.* 100% vegetarian, ethically wild harvested, gluten-free.
Research Promise: At LifeSource Vitamins, our commitment is rooted in research and results. Every benefit below is supported by human clinical studies indexed in the National Institutes of Health (NIH) via PubMed, with full texts available in the National Library of Medicine (NLM) PubMed Central (PMC) when available. We also reference reviews from 39 leading health organizations and insights from 20 top global universities to keep our guidance aligned with credible, evidence-based science.* Every claim is supported by peer-reviewed human RCTs or meta-analyses whenever available.
Clinically Studied Benefits (Human Evidence)
Additional / Promising Evidence
Traditional and emerging evidence supports the long-standing role of Verbascum thapsus L. in respiratory wellness.
The European Medicines Agency (EMA) and World Health Organization (WHO) recognize mullein for its soothing, demulcent properties that help maintain normal mucus flow and throat comfort.
Reviews from the University of Maryland Medical Center and Oregon State University – Linus Pauling Institute describe its mucilage and antioxidant compounds as natural airway protectants that support everyday breathing comfort.*
University / Academic Context
Leading academic institutions document mullein’s historical and scientific value.
The University of Maryland Medical Center and Oregon State University – Linus Pauling Institute highlight the plant’s mucilaginous and flavonoid content, supporting its traditional role in promoting respiratory comfort and airway protection.*
Global Evidence & Authoritative Reviews
International health authorities affirm mullein’s respected place in herbal medicine.
The European Medicines Agency (EMA) and World Health Organization (WHO) include Verbascum thapsus L. in official herbal monographs for supporting throat comfort, bronchial health, and normal respiratory function.*
Note: Global and University summaries emphasize scope, consensus, and mechanistic context — never study duration.
We monitor research from leading institutions — Harvard, Johns Hopkins, Mayo Clinic, Cleveland Clinic, Cambridge, Oxford, Stanford, Yale, Tufts, University of Florida, Oregon State University – Linus Pauling Institute, Columbia, Cornell, Ohio State — to align with credible science.*
Key Ingredients
Brief Benefit Bullets
Suggested Use
Take 1 capsule 1-3 times per day or as directed by your health care professional. Do not take during pregnancy or while nursing. Keep out of the reach of children.
Product Specifications
3rd Party Testing: Every LifeSource Vitamins product is tested by independent labs to verify identity, purity, potency, and label accuracy. Click Here To View Our 3rd-Party Testing Process
LifeSource Vitamins — Proudly American — Since 1992
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Always consult your physician before taking any supplements.
Mullein 330 mg 90 Veggie Caps — supports respiratory comfort, mucus clearance, breathing ease. 3rd-party tested. Clinically Studied Ingredients — NIH/PubMed!*

*Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Always consult your physician before taking any supplements. Individual results may vary. This information is not intended to replace your healthcare provider but to support and enhance that relationship. You are encouraged to do your own research and take an active role in your health decisions. If you are pregnant, nursing, taking medications, or have any medical conditions, consult your healthcare professional before using any supplements discussed on this site.