Mullein is most commonly used as a tea made from dried leaves or flowers, but it also works as an oil, tincture, poultice, or capsule. Each form suits a different purpose, from soothing a cough to easing ear pain. Here’s how to prepare and use mullein effectively, along with what to watch out for.
Mullein Tea: The Most Popular Form
Tea is the simplest and most widely used way to take mullein. It works well for respiratory issues like coughs, colds, and congestion because the plant contains natural mucilage, a gel-like substance that coats irritated tissue in your throat and airways. Mullein also acts as an expectorant, helping thin mucus so you can cough it up more easily.
To make mullein tea, add 1 to 2 teaspoons of dried mullein leaves or flowers to a cup of boiling water. Remove the water from heat before adding the plant material, then let it steep for 10 to 15 minutes. The steeping time matters: too short and you won’t extract enough of the active compounds, too long and the tea turns bitter.
The most important step is straining. Mullein leaves are covered in tiny hair-like fibers that will irritate your throat if you swallow them. A standard tea strainer won’t catch them. Use a coffee filter or fold several layers of cheesecloth over your cup and pour through that. This is non-negotiable, even with commercially packaged loose leaf mullein.
Most herbalists suggest drinking 2 to 3 cups per day when you’re using it for respiratory support. There are no official dosage guidelines, so starting with one cup and working up is a reasonable approach.
Mullein Oil for Ear Pain
Mullein flower oil is a traditional remedy for the pain of middle ear infections. The oil is typically made by infusing mullein flowers in olive oil over several weeks, and it’s often combined with garlic or other herbs in commercial preparations. One preliminary study found that herbal ear drops containing mullein helped relieve ear infection pain, though the study lacked a placebo group, so the evidence isn’t definitive.
To use it, warm the oil to room temperature (never heat it directly) and apply 1 to 3 drops onto a small piece of cotton. Place the cotton gently in the opening of the affected ear. You can repeat this up to three times a day. Two important caveats: avoid letting the oil contact the eardrum directly, and don’t use mullein oil for swimmer’s ear (an infection of the outer ear canal), which requires different treatment. This remedy is specifically for middle ear infections.
Tinctures and Liquid Extracts
Mullein tinctures are alcohol-based extracts that concentrate the plant’s compounds into a small volume. They’re convenient if you don’t want to brew tea multiple times a day. A typical dose is one to two dropperfuls (roughly 30 to 60 drops) mixed into a glass of water, taken once or twice daily.
Mullein also comes as an aqueous (water-based) extract. For this form, dilute 1 to 2 mL into about half a cup of water and drink it up to three times daily. Keep the total aqueous extract below 6 mL per day.
Poultice for Skin and Joints
A mullein poultice applies the plant directly to the body’s surface. It’s traditionally used on bruises, minor burns, skin irritation, and sore joints. To make one, wash fresh mullein leaves and simmer them in a small amount of water for about five minutes. Let them cool until they’re comfortable to touch, squeeze out the excess water, and lay the leaves directly on the affected area. This only works on intact skin: don’t apply a poultice to open or bleeding wounds.
Mullein Capsules
Capsules containing dried mullein leaf powder are the most standardized option. They come in various strengths, so the dose depends on the product. If you prefer a consistent, measured amount without any preparation, capsules are the most straightforward choice. Follow the dosage on the specific product you buy, since concentrations vary widely between brands.
Harvesting Your Own Mullein
Mullein is a biennial plant, meaning it lives for two years. In its first year, it produces a low rosette of large, fuzzy leaves but no flowers. These first-year leaves can be harvested for tea or poultices. In the second year, the plant sends up a tall flower stalk (sometimes over six feet) covered in small yellow blossoms. It dies after this blooming season.
Pick leaves and flowers on a dry day when there’s no dew or rain on the plant. Morning moisture can promote mold during drying. Harvest flowers in summer as they bloom. Dry them in a single layer in a warm, well-ventilated area out of direct sunlight until they’re crisp, then store in an airtight container.
Safety Considerations
Mullein leaves and flowers have a strong safety profile for most adults. No specific drug interactions have been documented, and no formal contraindications have been identified. That said, safety data for pregnant or breastfeeding women is limited, so there’s no established guidance for those groups.
The one part of the plant to avoid is the seeds. Mullein seeds contain rotenone, a naturally occurring compound that is toxic to humans and is actually used commercially as a pesticide. Rotenone poisoning has no antidote and can be fatal. When harvesting or buying mullein, make sure you’re using only leaves and flowers.
The fine hairs covering mullein leaves deserve repeated emphasis. Whether you’re making tea, handling fresh leaves, or working with dried material, always filter thoroughly before drinking. Those tiny fibers are the most common cause of a negative experience with mullein, and they’re entirely avoidable with proper straining.