Mullein tea is an herbal tea made from the leaves and flowers of the mullein plant (scientifically known as Verbascum thapsus).
Traditionally used for respiratory support, it is believed to help soothe the throat and reduce symptoms of cough and congestion.
While many enjoy it for its soothing effects, scientific evidence on its effectiveness for respiratory issues is limited.
Always consult a healthcare provider before using mullein tea for any medical conditions.
What Is Mullein Tea?
Mullein tea is an herbal tea made from the leaves and flowers of the mullein plant, Verbascum thapsus. It has been used for centuries in traditional medicine, particularly in Europe and parts of Asia, due to its reputed health benefits.
Mullein is most famous for its use in supporting the respiratory system, although it is also known for its mild sedative effects.
In this article, we will explore:
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The benefits and uses of mullein tea
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Key ingredients and evidence
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Scientific research and studies
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Possible side effects and safety precautions
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How to make mullein tea at home
With easy-to-understand explanations and references to trusted health sources, this article will provide a well-rounded understanding of mullein tea for people of all ages, even young readers.
What Are the Benefits of Mullein Tea?

Mullein tea has several purported health benefits, especially for respiratory health. Let’s dive into the key areas where this herbal tea is thought to be beneficial:
1. Supports Respiratory Health
Mullein tea has long been associated with respiratory support. It is believed to help alleviate symptoms of:
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Cough
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Congestion
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Sore throat
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Asthma-like symptoms
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Bronchitis
This is because mullein contains compounds that may act as anti-inflammatory agents, helping to soothe the respiratory tract. According to the University of Maryland Medical Center, mullein has been traditionally used to ease bronchitis symptoms and other respiratory issues.
High-authority references:
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National Center for Complementary and Integrative Health (NCCIH) notes that while herbal remedies like mullein have been used for respiratory issues, more studies are needed to confirm their effectiveness.
2. Soothes the Throat
Mullein tea is known for its soothing properties. The tea is thought to coat the throat, providing relief for conditions like sore throats, hoarseness, and dry coughing.
The soothing effect is likely due to its mucilage content, a gel-like substance that coats mucous membranes. This can help ease irritation in the throat, particularly during a cold or flu.
Reference-style evidence:
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According to WebMD, mullein is sometimes recommended for coughs and colds because of its ability to calm irritation in the throat.
3. Antioxidant Properties
Mullein contains antioxidants, which help protect the body from free radicals — harmful molecules that can cause oxidative stress and lead to chronic diseases. These antioxidants, such as flavonoids and saponins, help the body fight inflammation and promote overall wellness.
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Flavonoids are known to have anti-inflammatory and antioxidant effects.
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Saponins may help the body fight infections and improve immune function.
Reference evidence:
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Research on antioxidants, including those found in mullein, can be found through Harvard T.H. Chan School of Public Health.
4. Aids in Digestion
In addition to its respiratory benefits, mullein tea has been traditionally used to aid digestion. It is believed to:
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Relieve bloating
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Help with gas
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Soothe digestive discomfort
Mullein may help in regulating digestion by promoting healthy gut function. However, scientific studies on this specific benefit are limited.
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Scientific Evidence on Mullein Tea:
While mullein tea has been traditionally used for centuries in folk medicine, scientific evidence supporting its effectiveness is still limited. Some studies have found that mullein may have mild medicinal effects, especially when it comes to respiratory health.
Scientific references:
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A study published in the Journal of Ethnopharmacology found that mullein extract demonstrated antibacterial and anti-inflammatory properties in laboratory settings.
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A review from the National Institutes of Health (NIH) highlights the historical use of mullein for respiratory ailments, but emphasizes that more clinical studies are necessary to fully understand its therapeutic value.
While promising, the scientific community generally agrees that more studies are needed to confirm many of the health claims associated with mullein tea.
Possible Side Effects and Safety:
Mullein tea is generally considered safe when consumed in moderation. However, there are a few precautions to keep in mind:
1. Allergic Reactions
As with any herbal product, it’s possible for some individuals to experience an allergic reaction to mullein. Symptoms may include skin rashes, itching, or difficulty breathing.
If you are allergic to plants in the Scrophulariaceae family (such as foxglove), you may want to avoid mullein.
2. Interaction with Medications
Mullein tea may interact with certain medications, especially those related to the lungs, heart, or blood pressure. Always consult with a healthcare provider if you are on medications for conditions like asthma, high blood pressure, or heart disease.
3. Pregnant and Breastfeeding Women
Although mullein is not considered dangerous, pregnant and breastfeeding women should avoid herbal teas unless recommended by a doctor.
References:
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The American Pregnancy Association advises caution when using herbal remedies during pregnancy due to the lack of comprehensive studies on their safety.
How to Make Mullein Tea at Home:
If you want to try mullein tea at home, here’s a simple guide:
Ingredients:
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1-2 teaspoons of dried mullein leaves or flowers (available at health food stores or online)
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1 cup of hot water
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Honey or lemon (optional)
Instructions:
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Boil a cup of water.
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Add the mullein leaves or flowers to a teapot or cup.
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Pour the hot water over the mullein and let it steep for 5-10 minutes.
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Strain the tea before drinking (mullein can leave small, fuzzy particles in the water).
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Add honey or lemon if desired.
Note: Always strain the tea well to remove any leftover plant particles, as they may irritate the throat.
How Often Should You Drink Mullein Tea?
For most people, 1-2 cups per day is a safe amount. However, it’s important to start with a small amount to see how your body reacts. If you experience any discomfort or side effects, discontinue use and consult a healthcare provider.
Is Mullein Tea Right for You?
Mullein tea is an herbal remedy that has been used for centuries for its soothing properties, particularly for respiratory health.
While it has shown promise in traditional medicine, the scientific evidence on its effectiveness is still limited.
If you’re looking for a natural way to soothe a sore throat, ease a cough, or support digestion, mullein tea may be worth trying.
But remember, it’s not a cure-all. Always be cautious with herbal products, especially if you have allergies or are pregnant.
For the best results, enjoy mullein tea as part of a balanced lifestyle, and always consult with a healthcare provider before using it as a treatment for any medical conditions.