What Is Bronquiosan? A Peruvian Blend for Easy Breathing

Ask around a market in Lima during cold season and someone will mention Bronquiosan before you finish describing your cough. It's not a single herb. It's a blend, and that's actually the point: eucalyptus, cat's claw, lungwort, and chuchuhuasi, all Amazonian in origin except eucalyptus, which Peru adopted generations ago and now treats as its own.

We carry this one as a tea, and enough customers ask what's actually in the bag that it seemed worth a straight answer instead of a marketing paragraph.

The four herbs, one at a time

Eucalyptus (eucalipto) is the herb doing the most documented work here. Its leaves contain 1,8-cineole, a compound that shows up in Vicks VapoRub and in prescription mucolytics in Germany. A 2003 double-blind trial published in Respiratory Medicine found that concentrated cineole capsules reduced bronchitis symptoms and shortened flare-ups compared to placebo. That study used a concentrated oil capsule, not steeped tea leaves, so a cup of Bronquiosan is a much gentler dose than what researchers tested. Still, the mechanism is real, and it's why eucalyptus shows up in cold remedies worldwide, not just in Peru.

Cat's claw (una de gato) is a woody Amazonian vine that Ashaninka and other communities have used for centuries as a general anti-inflammatory and immune tonic. Lab studies show it modulates certain immune markers, but most of that work is in cell cultures or small animal studies. Human trials on cat's claw tend to focus on joint pain and inflammation, not lungs specifically. Its presence in Bronquiosan leans more on tradition and general immune support than a lung-targeted mechanism.

Lungwort (pulmonaria) has an interesting backstory: European herbalists centuries ago named it "lungwort" because its spotted leaves resembled a diseased lung, under the old doctrine of signatures (the belief that a plant's appearance hints at what it treats). Modern research on it is thin. What it does reliably offer is mucilage and tannins, which can soothe an irritated throat the same way marshmallow root or slippery elm does. Worth having in the cup, but don't expect it to be doing heavy lifting on its own.

Chuchuhuasi is Amazonian bark, traditionally boiled into a tonic for joint aches, fatigue, and general vitality more than respiratory complaints specifically. Its inclusion here reads as a traditional wellness herb rounding out the blend rather than a targeted lung remedy. That's not a knock. Peruvian herbal blends are often built this way, layering a well-documented herb with several traditional ones, and it's honest to say so rather than claim all four are equally proven for breathing support.

How people actually drink it

The standard prep is simple: boil water, steep one tea bag for 5 to 7 minutes, drink hot. Many people reach for it at the very first scratchy-throat sign of a cold, not after it's already settled into the chest, and some add honey and lime the way you'd doctor up any cold tea. It's a comfort ritual as much as anything, and there's nothing wrong with that as long as expectations stay realistic.

If you only want the best-documented herb in the mix, our Premium Eucalyptus Tea is the single-ingredient version. Bronquiosan is for people who want the whole traditional combination in one bag rather than steeping several teas separately.

Where it fits, and where it doesn't

This is a comfort tea for mild congestion, a scratchy throat, or the first day of a cold, not a treatment for asthma, pneumonia, or bacterial bronchitis. If you're having real trouble breathing, running a fever for more than a couple of days, or coughing up colored mucus, that's a doctor visit, not a tea break. We'd rather say that plainly than have you wait on herbal tea when you need antibiotics or an inhaler.

A few cautions worth knowing: concentrated eucalyptus oil shouldn't be given to infants or small children (it can trigger laryngospasm at high doses), though tea-strength amounts are much milder. Cat's claw has mild blood-pressure-lowering effects in some studies, so check with your doctor if you're on blood pressure medication or blood thinners. Pregnant or nursing women should ask a healthcare provider before trying any new herbal blend, Bronquiosan included, since safety data on chuchuhuasi and cat's claw during pregnancy is limited.

Browse our full Respiratory Support collection if you want to compare options, including a single-herb eucalyptus version.

*These statements have not been evaluated by the FDA. Bronquiosan Tea is not intended to diagnose, treat, cure, or prevent any disease.