Mullein Tea for Lungs: The Herbalist's Best-Kept Secret

What Is Mullein Tea?

Walk along a gravelly roadside in the American West, a crumbling stone wall in rural England, or a sun-beaten hillside in Turkey, and you will almost certainly spot it — a tall, woolly stalk rising five or six feet out of a rosette of thick, silver-green leaves so soft they feel like flannel. That is Verbascum thapsus, common mullein, and for thousands of years it has been one of the most relied-upon respiratory herbs on the planet.

Mullein belongs to the Scrophulariaceae family, a lineage of plants that also includes foxglove and snapdragon. Unlike those showy relatives, mullein is a roadside survivor, colonizing disturbed soil across six continents. Its adaptability mirrors its medicinal versatility — herbalists on nearly every landmass have independently arrived at the same conclusion: this plant helps you breathe.

The name likely derives from the Latin mollis, meaning “soft,” a reference to those velvety leaves that Native American tribes once dried and smoked to open congested airways. Roman soldiers dipped the tall flower stalks in tallow to make torches — earning mullein the folk name “candlewick plant.” In Appalachian folk medicine, a strong mullein leaf tea was the first-line remedy for chest colds, and Amish communities still keep dried mullein in the kitchen the way most households keep aspirin in the cabinet.

Today, mullein has surged in popularity as people look for natural lung support. The dried leaves and flowers make a mild, slightly earthy herbal tea that is gentle enough for daily use. But what does the science actually say about the respiratory claims? And how does mullein fit into a broader wellness routine that includes herbs like echinacea and peppermint? Let’s dig in.

Mullein Tea Benefits

Mullein’s therapeutic effects come from a cocktail of bioactive compounds working together: saponins (which thin and loosen mucus), iridoid glycosides like aucubin and catalpol (with anti-inflammatory and antimicrobial activity), flavonoids such as verbascoside and hesperidin (potent antioxidants), and mucilage polysaccharides (which coat and soothe irritated mucosal tissue). The leaves are richer in mucilage and saponins; the flowers concentrate more of the anti-inflammatory flavonoids. A well-made tea from both parts covers the full spectrum.

Here is what the research and clinical tradition tell us about mullein’s most significant benefits.

1. Respiratory Health & Lung Support

This is mullein’s defining strength — the benefit that has made it a staple in herbal respiratory formulas for centuries and the reason it ranks among the most searched herbal teas for lung health.

Mullein acts on the respiratory tract through a dual mechanism. First, the saponin compounds have expectorant properties: they stimulate fluid secretion in the airways, making thick, sticky mucus thinner and easier to cough up. Second, the mucilage content forms a soothing film over irritated bronchial tissue, calming the cough reflex and reducing that raw, scratchy feeling in the throat that accompanies most upper respiratory infections.

In practice, herbalists consistently report that mullein tea helps with productive coughs (the kind where mucus needs to come up) and dry, irritated coughs alike. For productive coughs, the saponins do the heavy lifting; for dry coughs, the mucilage calms the tickle. This is relatively rare in a single herb — most expectorants make dry coughs worse, and most demulcents do not help move stuck phlegm.

Several European countries, including Germany, list mullein flower in their official pharmacopoeias for the treatment of respiratory catarrh. Germany’s Commission E, which evaluates herbal medicines with the same rigor applied to pharmaceuticals, has approved mullein flower preparations for coughs and bronchitis.

For respiratory support, consider pairing mullein with ginger tea, which adds warming circulatory stimulation, or peppermint, whose menthol opens airways. Our immunity guide covers additional herbs that complement mullein during cold and flu season.

2. Anti-Inflammatory Activity

Chronic low-grade inflammation underlies everything from joint pain to cardiovascular disease, and mullein’s flavonoid profile gives it meaningful anti-inflammatory punch.

Verbascoside also appears in several other anti-inflammatory herbs, but mullein provides it in particularly high concentrations. Beyond COX inhibition, mullein flavonoids have shown the ability to suppress nuclear factor kappa-B (NF-κB), a master switch in the inflammatory cascade. This broad-spectrum anti-inflammatory profile may explain why mullein tea drinkers often report improvements in conditions beyond the lungs — sore throats, joint stiffness, and general “achiness” during colds.

For those interested in anti-inflammatory herbal support, mullein pairs naturally with turmeric (whose curcumin targets many of the same pathways) and chamomile (which adds calming, anti-spasmodic effects).

3. Ear Infection Support (Mullein Oil)

While this article focuses on mullein tea, it is worth mentioning one of mullein’s most celebrated external uses: ear oil for otitis media (middle ear infections), particularly in children.

Mullein flower oil — made by infusing the flowers in olive oil for several weeks — has been a folk remedy for earaches across Europe and North America for centuries. The combination of anti-inflammatory flavonoids, mild antimicrobial activity, and soothing mucilage makes it well-suited for this purpose. Many naturopathic pediatricians still recommend it as a first-line approach for mild ear pain.

4. Antiviral Properties

Modern research is uncovering antiviral activity in mullein that validates its traditional use during colds and flu.

While in vitro results do not automatically translate to clinical efficacy, they provide a plausible mechanism for the widespread traditional practice of drinking mullein tea at the first sign of a cold. Combined with mullein’s respiratory soothing effects, the antiviral activity creates a compelling case for keeping dried mullein in your herbal tea pantry during winter months.

5. Mild Sedative & Nervine Effects

Less well-known than its respiratory benefits, mullein has a subtle calming quality that many tea drinkers notice. The plant contains small amounts of rosmarinic acid and other compounds that have demonstrated mild anxiolytic effects in animal studies. Traditionally, mullein tea was sometimes given before bed to ease the restlessness that accompanies being sick — a practical intersection of its respiratory and calming properties.

This gentler sedative action pairs well with dedicated calming herbs like valerian, passionflower, and lavender. For a full exploration of herbal approaches to relaxation, see our anxiety guide and sleep guide.

6. Urinary Tract & Mild Diuretic Effects

Historical records from European herbalism list mullein as a mild diuretic, used to support kidney function and ease urinary discomfort. While modern clinical studies on this specific use are limited, the saponin content provides a plausible mechanism — saponins are known to have mild diuretic effects in several other plant species. Some naturopathic practitioners still include mullein in kidney-support blends alongside other herbs.

Mullein in Traditional Chinese Medicine

Understanding mullein through the TCM framework illuminates why it works so broadly for respiratory complaints. In TCM theory, coughs arise from different patterns: Lung heat produces yellow phlegm and a burning throat; Lung dryness creates a dry, hacking cough with scanty mucus; phlegm-damp accumulation leads to a heavy, productive cough with copious white sputum.

Mullein is unusual because it addresses multiple patterns simultaneously. Its cool nature clears heat. Its mucilage moistens dryness. Its saponins transform and expel phlegm. Think of it as a Lung janitor — it cools down inflammation, moistens parched tissue, and sweeps out the mucus, all in one pass.

In TCM energetics, the Lung governs the Qi of the entire body and controls the skin. When the Lung is obstructed by phlegm-heat, not only does breathing suffer, but the skin may become dull or break out, and overall vitality drops. By restoring clear Lung function, mullein indirectly supports whole-body Qi circulation.

Best TCM pairings: Mullein + chrysanthemum flower + raw honey for Lung heat patterns. Mullein + dried pear + lily bulb (百合) for Lung dryness. Mullein + ginger + tangerine peel for phlegm-damp patterns (the ginger warms and moves, counterbalancing mullein’s cool nature).

How to Brew Mullein Tea

Brewing mullein tea requires one extra step that most herbal teas do not — straining through a fine cloth. The leaves are covered in tiny hair-like trichomes that can irritate the throat if they end up in your cup. A coffee filter, cheesecloth, or fine mesh strainer solves this completely.

Brewing Instructions

1. 1

   Step 1: Heat your water to a full boil — 212°F (100°C)

   Mullein is a hardy herb that needs full boiling water to extract its saponins and mucilage effectively. Unlike delicate green teas, there is no risk of bitterness from high temperatures with mullein.

2. 2

   Step 2: Measure 1-2 tablespoons (3-5g) of dried leaves and/or flowers per 8oz cup

   The leaves provide more mucilage and expectorant saponins; the flowers contribute extra anti-inflammatory flavonoids. Using a blend of both is ideal. For acute respiratory issues, use the higher amount.

3. 3

   Step 3: Steep for 10-15 minutes, covered

   Mullein needs a longer steep than most herbal teas to fully release its mucilage. Cover the vessel to retain volatile compounds. The tea will turn a pale gold-green color when properly steeped.

4. 4

   Step 4: Strain through a fine filter

   This is the critical step. Pour through a coffee filter, fine cheesecloth, or paper tea filter to catch the fine leaf hairs. Skipping this step can cause throat irritation — the opposite of what you want from a respiratory herb.

Brewing Variations

• Double-strength respiratory brew: 2 tbsp leaves + 1 tbsp flowers, 6oz water, steep 15 minutes covered. Drink 3-4 times daily during a chest cold.
• Mullein + peppermint cold relief blend: Equal parts mullein leaf and peppermint leaf. The menthol opens sinuses while mullein soothes the chest. Excellent when congested.
• Mullein + honey throat soother: Brew strong, strain well, stir in a generous spoonful of raw honey. Sip slowly, letting the liquid coat the throat. Buckwheat honey works especially well here.
• Iced mullein sun tea: Place 4 tbsp dried mullein in a quart jar of water, set in the sun for 4-6 hours, strain through a fine filter, and chill. Mild and refreshing.
• Cold brew: 3 tbsp mullein in 16oz room-temperature water, refrigerate 12 hours. Strain very thoroughly. Produces a milder, sweeter infusion.

For more techniques, visit our complete brewing methods guide.

Flavor Profile & Pairings

Mullein tea has a mild, slightly earthy flavor with faint honey-like sweetness and very little bitterness when properly steeped. The aroma is gentle and herbaceous, reminiscent of dried hay with a subtle floral note from the flowers. It is one of the most neutral-tasting medicinal herbs, which makes it an excellent base for blends.

Body: Light. Mullein produces a pale golden-green liquor that is smooth and slightly viscous from the mucilage content — you can feel the “coating” quality on the throat, which is part of its therapeutic action.

Best times to drink: Morning (to clear overnight congestion), throughout the day during respiratory illness, or whenever lung support is desired.

Food pairings: Mullein’s neutral profile means it does not clash with food. It goes well alongside toast and honey, light soups, roasted root vegetables, and mild crackers. During illness, pair it with chicken broth for a soothing combination.

Similar herbs: If you find mullein helpful, explore echinacea (for immune activation), peppermint (for sinus and airway opening), and marshmallow root (another mucilage-rich throat soother). For a broader exploration of what might suit your needs, browse our best herbal teas guide.

Buying Guide: What to Look For

Mullein is widely available and relatively affordable, but quality varies significantly. Here is how to find the good stuff.

Quality markers:

• Cut-and-sifted leaf — avoid powdered mullein, which is harder to strain and often has more stem material. Properly dried leaves should look grayish-green with visible fuzzy texture.
• Whole flowers — if buying flowers separately or as a blend, look for intact yellow petals. They should still have color and a faint sweet smell.
• Fresh aroma — good mullein smells mildly herbaceous and slightly sweet. Stale mullein smells like old cardboard.
• Organic certification — mullein grows as a weed, but commercially cultivated mullein should carry USDA Organic or equivalent to avoid pesticide contamination.
• Minimal stems — the stems contain far fewer active compounds. A quality product is mostly leaf and flower material.

Red flags: excessive stem content, brown or blackened leaves, musty smell, very fine powder (difficult to strain), no origin information.

For detailed product recommendations, check out our best herbal teas section. If you are building a respiratory support collection, our immunity guide covers complementary herbs and blends.

Safety & Contraindications

Frequently Asked Questions

What does mullein tea taste like?

Mullein tea has a mild, earthy flavor with a slight honey-like sweetness and very little bitterness. It is one of the most neutral-tasting medicinal herbs, making it easy to drink on its own or blend with other teas like peppermint or chamomile. The mucilage gives it a slightly smooth, coating quality in the mouth — pleasant rather than slimy.

Does mullein tea help with coughs and congestion?

Mullein has a long and well-documented history of use for respiratory complaints. Its saponins act as natural expectorants, helping to thin and loosen mucus so it can be coughed up more easily. The mucilage content simultaneously soothes irritated throat and bronchial tissue. Germany’s Commission E has approved mullein flower for coughs and bronchitis. Many people find it helpful during chest colds, especially when combined with raw honey. For related herbs, see our immunity guide.

Is mullein tea safe to drink every day?

Mullein tea is generally considered safe for daily use in moderate amounts (1-3 cups per day). It has no caffeine and no documented toxicity at normal tea consumption levels. The most important safety step is to always strain the tea through a fine filter to remove the tiny leaf hairs, which can irritate the throat if swallowed. If you are pregnant, nursing, or taking medications, consult your healthcare provider before making it a daily habit.

Can you smoke mullein instead of drinking it as tea?

Smoking dried mullein leaf is an old folk practice — Native American tribes used it to open congested airways. Some modern herbalists still suggest it for specific respiratory purposes. However, inhaling any combusted plant material introduces irritants and carcinogens to the lungs. Tea is a far safer and more efficient delivery method for mullein’s beneficial compounds. The boiling water extracts the saponins and mucilage effectively without the risks associated with smoke inhalation.

How is mullein tea different from mullein ear oil?

Mullein tea is a water infusion of the dried leaves and flowers, taken internally for respiratory support. Mullein ear oil is made by infusing the flowers in olive oil over several weeks and is used topically — dropped into the ear canal for earache relief. They use different plant parts, different solvents (water vs. oil), and target different conditions. A clinical study found that herbal ear drops containing mullein flower were as effective as conventional anesthetic drops for ear pain in children.

What herbs pair well with mullein tea?

Mullein blends beautifully with many herbs. For respiratory support, try it with peppermint (opens airways), echinacea (activates immune defenses), or ginger (adds warming circulation). For calming blends, combine with chamomile or lavender. For throat soothing, pair with marshmallow root and raw honey. Mullein’s neutral flavor makes it one of the most versatile blending bases in the herbal tea world. Visit our recipes section for specific blend formulas.

Does mullein tea have caffeine?

No. Mullein is completely caffeine-free. It comes from the Verbascum thapsus plant, which has no relation to Camellia sinensis (the plant that produces caffeinated green, black, and oolong teas). You can drink mullein tea at any time of day, including before bed, without any effect on sleep. In fact, its mild calming properties may gently support relaxation. For more about sleep-supportive teas, see our dedicated guide.