Last updated: 12-23-2025 | Reviewed by Dr. Chris Jackson, PharmD
If you've been exploring natural options for respiratory support, you've likely come across mullein leaf. But you might be wondering: is it actually safe to take every day?
The short answer is yes—for the overwhelming majority of healthy adults, mullein leaf is considered safe for daily use when taken as directed. But let's dig into the details so you can make an informed decision about incorporating this traditional herb into your wellness routine.
Table of Contents
- What Is Mullein and How Does It Work?
- What Research Says About Mullein Safety
- Who Should Use Caution With Mullein
- How to Take Mullein Daily
- Frequently Asked Questions
- Conclusion
What Is Mullein and How Does It Work?
Mullein (Verbascum thapsus) is a flowering plant native to Europe and Asia that now grows throughout North America. The leaves, flowers, and roots have all been used traditionally to support respiratory wellness and promote clear airways naturally.
Mullein contains several compounds that researchers believe contribute to its benefits:
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Saponins: These natural compounds may help support mucus clearance and easy breathing
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Flavonoids: Antioxidant compounds that support overall respiratory health
- Mucilage: A gel-like substance that provides soothing properties for the throat and respiratory tract
According to a 2024 review in the Journal of Ethnopharmacology, mullein has a long history of traditional use for respiratory support, dating back to ancient Greek and Roman times.
What Research Says About Mullein Safety
Modern research supports what traditional herbalists have observed for generations: mullein leaf appears to be well-tolerated by most adults.
A comprehensive review published in Phytotherapy Research noted that mullein is generally considered safe when used as a dietary supplement. The plant doesn't contain known toxic compounds, and adverse reactions are rare when taken at recommended doses.
The German Commission E, a scientific advisory board that evaluates herbal medicines, has approved mullein for respiratory support applications. In clinical settings, mullein preparations have been used without significant reported side effects.
For those interested in the science behind mullein for lungs, research suggests the herb's compounds work synergistically to support the body's natural respiratory functions rather than forcing a specific physiological response—which may explain its favorable safety profile.
Who Should Use Caution With Mullein
While mullein benefits many people, certain groups should consult their healthcare provider before starting any new supplement:
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Pregnant or nursing women: Not enough research exists to confirm safety during pregnancy or breastfeeding
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People with plant allergies: Those allergic to plants in the Scrophulariaceae family should proceed with caution
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Those taking certain medications: Mullein may interact with diabetes medications or diuretics
- Children: Pediatric dosing hasn't been well-established
If you're an ex-smoker working on lung recovery or seeking stop smoking support, mullein may be particularly appealing. Many people use mullein as part of their smoker's lung detox routine. However, if you have existing respiratory conditions, it's wise to discuss supplementation with your doctor first.
How to Take Mullein Daily
Mullein comes in several forms, each offering different advantages for daily use and breathing support:
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Capsules: Convenient and pre-measured for consistent dosing
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Gummies: Easy to take, great for those who don't like swallowing pills
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Tinctures/Drops: Fast absorption, flexible dosing
- Tea: Traditional method, provides a soothing ritual
For daily respiratory support and mucus relief natural solutions, many people find that consistency matters more than the specific form. Choose the delivery method that fits your lifestyle so you'll actually stick with it.
Dr. Chris Jackson, PharmD and founder of Betterbrand, formulated the BetterLungs product line with optimal mullein dosing in mind. The Mullein + Chlorophyll Drops, for example, were studied in a 60-day clinical trial where 81% of participants reported less frequent coughing and 77% reported clearer airways.
Frequently Asked Questions
How long can you take mullein daily?
Most herbal practitioners consider mullein safe for extended daily use. Always follow the specific product's directions and consult your healthcare provider for personalized guidance.
Can mullein help with quitting smoking?
While mullein won't reduce nicotine cravings, many people incorporate it into their routine when pursuing quitting smoking benefits for overall respiratory wellness. It may support natural mucus clearance as your body recovers from smoking. A lung cleanse routine that includes mullein, proper hydration, and exercise can complement your quit journey.
Are there any side effects of daily mullein use?
Side effects are uncommon but may include mild digestive upset in some people. If you experience any adverse reactions, discontinue use and consult your healthcare provider. Quality matters—choose products that are third-party tested, like those verified by Eurofins Scientific.
What's the best time of day to take mullein?
There's no specific "best" time. Many people take mullein in the morning to support respiratory wellness throughout the day, while others prefer evening use. Consistency at whatever time works for you is most important.
Conclusion
Mullein leaf has a strong safety profile backed by centuries of traditional use and modern research. For most healthy adults, daily supplementation is considered safe and may support respiratory wellness, promote easy breathing, and help maintain clear airways.
If you're ready to experience mullein benefits for yourself, Betterbrand offers several options—from BetterLungs Capsules with 300mg mullein leaf plus supporting ingredients, to the clinically studied Mullein + Chlorophyll Drops. All products are doctor-formulated by Dr. Chris Jackson, PharmD, third-party tested, and backed by a 365-day money-back guarantee.
*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 healthcare provider before starting any new supplement.
Sources
- Journal of Ethnopharmacology - Traditional uses of Verbascum species in respiratory support
- Phytotherapy Research - Safety and efficacy review of mullein preparations
- German Commission E Monographs - Regulatory assessment of mullein for respiratory applications
- Mount Sinai Health Library - Mullein herb overview and safety considerations