Official product information
All ten ingredients named on the BreathiZen label, what each one is, why it plausibly belongs in a breathing spray, and the amount — which is not published for a single one of them.
Written and reviewed by the BreathiZen Editorial Desk · Last updated September 22, 2026
Quick answer
BreathiZen names ten ingredients: mullein leaf extract, marshmallow root, bromelain powder, cordyceps militaris, corydalis root, California poppy seed, ginger root extract, green tea extract, L-theanine and organic lemon extract. No amount is published for any of them, so the strength of the formula cannot be judged from the label.
The list
Ten ingredients are named on the BreathiZen label. That is a real number and it is worth something — plenty of products in this category hide behind the words “proprietary blend” and name nothing at all.
What the label does not give you is any amount. Not a milligram figure, not an activity unit, not a percentage. So the useful question is not “is mullein good for you” but “what can I actually learn from a list without numbers”, and the answer is: quite a lot about intent, and nothing about strength.
Below, each ingredient gets the same four things — what it is, why it plausibly sits in a breathing formula, what the amount is, and what is worth checking with a clinician. Then a table puts all ten side by side.
All ten
Tap any card to open it. Every one of them ends with the same line.
Mullein leaf extract
The traditional respiratory herb in the formula.
Mullein (Verbascum thapsus) is a tall roadside plant whose soft leaves have been brewed as a tea in European and North American folk practice for coughs and chest tightness.
It is the ingredient most people recognise on a lung formula. Traditional use is long. Controlled human research on mullein for breathing is thin, so treat it as tradition rather than proof.
Amount in BreathiZen: not published
Bromelain powder
A pineapple enzyme group, usually used for swelling and comfort.
Bromelain is a mix of protein-digesting enzymes taken from pineapple stem and fruit. Supplement labels normally rate it in GDU or MCU activity units rather than milligrams alone.
Activity units matter more than weight for an enzyme. This label gives neither, so there is no way to judge the strength of the bromelain in this bottle.
Amount in BreathiZen: not published
Cordyceps militaris
A cultivated mushroom used in traditional tonics for stamina.
Cordyceps militaris is an orange club fungus grown on grain substrate. It is the cultivated species used in most modern supplements, as opposed to the wild caterpillar fungus.
Traditional East Asian use centres on breath and stamina. Human evidence is early and mostly small. Extract strength varies a lot between growers.
Amount in BreathiZen: not published
Marshmallow root
A demulcent - it coats and soothes rather than acts on the lungs.
Marshmallow root (Althaea officinalis) is rich in mucilage, a slippery plant fibre that forms a film on the tissue it touches.
In a spray it makes obvious sense: it is one of the few ingredients whose traditional use actually depends on touching the throat. It soothes the throat; it does not reach the lungs.
Amount in BreathiZen: not published
California poppy seed
A calming herb from traditional European practice.
California poppy (Eschscholzia californica) is the orange state flower of California. It is not opium poppy and does not contain morphine.
Its traditional use is rest and calm, not breathing. On this label it reads as part of the calm side of the formula rather than the lung side.
Amount in BreathiZen: not published
Corydalis root
A traditional Chinese herb used for discomfort.
Corydalis yanhusuo is a tuber used in traditional Chinese medicine, usually processed with vinegar before use.
Its traditional role is comfort, not breathing. Human research is limited and mostly on pain rather than the airway.
Amount in BreathiZen: not published
Ginger root extract
A warming kitchen root with the best-documented safety record here.
Ginger (Zingiber officinale) is the rhizome used worldwide as a spice and as a traditional remedy.
NCCIH says research shows ginger may be helpful for nausea and vomiting in pregnancy, and that results for other uses are mixed. Nothing in that review is about breathing.
Amount in BreathiZen: not published
Green tea extract
A polyphenol extract - and the ingredient that needs the clearest label.
Green tea extract concentrates the catechins in Camellia sinensis leaves, chiefly EGCG. Some extracts also carry caffeine; some are decaffeinated.
NCCIH reports that liver injury has been reported in people taking green tea extract, uncommonly, and more often in people with a particular immune gene variant. That is exactly why an unpublished amount matters here.
Amount in BreathiZen: not published
L-theanine
The amino acid from tea leaves, used for calm focus.
L-theanine is an amino acid found almost only in tea. It is the one isolated compound on this label rather than a whole-plant extract.
It has the cleanest research picture of the ten for calm and attention. It is not a respiratory ingredient, and no amount is published here either.
Amount in BreathiZen: not published
Organic lemon extract
Taste and a light citrus note for a spray taken on the tongue.
Lemon extract from Citrus limon. On a spray it does most of its work on flavour.
Honest reading: this is there so a daily spray tastes like something you will use again. That is a real job on a product you take every morning.
Amount in BreathiZen: not published
Side by side
| Ingredient | What it is doing here | Amount in BreathiZen | General reference range |
|---|---|---|---|
| Mullein leaf extract | The traditional respiratory herb in the formula. | not published | No agreed research dose |
| Bromelain powder | A pineapple enzyme group, usually used for swelling and comfort. | not published | Commonly 200-400 mg a day in trials, activity-unit dependent |
| Cordyceps militaris | A cultivated mushroom used in traditional tonics for stamina. | not published | No agreed research dose |
| Marshmallow root | A demulcent - it coats and soothes rather than acts on the lungs. | not published | No agreed research dose |
| California poppy seed | A calming herb from traditional European practice. | not published | No agreed research dose |
| Corydalis root | A traditional Chinese herb used for discomfort. | not published | No agreed research dose |
| Ginger root extract | A warming kitchen root with the best-documented safety record here. | not published | Commonly 1-2 g a day of dried root in trials |
| Green tea extract | A polyphenol extract - and the ingredient that needs the clearest label. | not published | EGCG commonly up to about 300-400 mg a day in trials |
| L-theanine | The amino acid from tea leaves, used for calm focus. | not published | Commonly 100-400 mg a day in trials |
| Organic lemon extract | Taste and a light citrus note for a spray taken on the tongue. | not published | Not applicable |
Reference ranges are general and depend heavily on the preparation used. They are not a claim about this product and they are not drawn from a trial of it, because no trial of it exists.
Our reading
Six honest groupings. Two of them are compliments and four are not.
Marshmallow root and mullein leaf. Marshmallow's mucilage works by coating what it touches, and mullein's traditional use is as a throat tea. Both of those descriptions need contact, which is the one thing a spray gives you and a capsule does not.
Ginger and green tea. NCCIH has reviewed both. Neither review is about breathing — ginger's evidence sits around nausea, and green tea's conclusion is that definite conclusions cannot yet be reached for most of the purposes it is used for.
L-theanine, California poppy and corydalis. All three have traditional or researched uses around calm, rest and comfort. None is a respiratory ingredient, and it is fair to ask what they are doing on a lung label.
Bromelain and cordyceps militaris. Bromelain is rated in activity units that are not printed. Cordyceps extract strength varies enormously between growers, and no extract ratio is published.
Organic lemon extract. On a spray you take every morning, making it pleasant is a genuine job. It is not a lung ingredient and we will not pretend it is.
No carrier is named — a liquid needs one, usually water plus glycerin or alcohol. No preservative is named. No allergen statement appears beyond the seal artwork. Those are ordinary label items and they are absent.
The honest section
NIH's Office of Dietary Supplements makes a point that applies directly here: US law does not require dietary supplements to be standardised, and there is no legal or regulatory definition of the term in the United States. It adds that for most botanicals, the constituents responsible for their effects are not known.
Put that next to a label with no amounts and you get the honest position. Two unknowns stack: you do not know how much plant material is in the bottle, and for most of these plants nobody knows exactly which compounds matter. A published amount would have fixed the first unknown. It would not have fixed the second, but it is the one the seller could have fixed.
If any of those appear, this page changes and the date at the bottom of it moves forward. That is the whole correction policy.
Questions
Ten named ingredients: mullein leaf extract, marshmallow root, bromelain powder, cordyceps militaris, corydalis root, California poppy seed, ginger root extract, green tea extract, L-theanine and organic lemon extract.
Not published. No amount appears for any of the ten ingredients in the material supplied to us. We say so on every page rather than filling the gap with a guess.
Not published. Green tea extract can carry caffeine or be decaffeinated, and the label does not say which one is used here. If caffeine matters to you, call the order desk on +1 (302) 200-3480 before you buy.
It is the one ingredient here with a documented safety signal. NCCIH reports that liver injury has been reported in people taking green tea extract, uncommonly, and more often in people with a particular gene variant found in 5 to 15 percent of Americans. Stop and call a clinician if you notice yellow skin, dark urine or unusual tiredness.
Several ingredients can. Bromelain and ginger may add to blood thinners. California poppy and corydalis may add to sedatives. L-theanine may add to blood-pressure medicine. Marshmallow root can slow how fast other medicines are absorbed.
No. Every reference on this site is about a single ingredient or about supplements in general. None of them tested this bottle.
References
Published prices run $49 to $89 a bottle with a 60-day money-back window. Order desk +1 (302) 200-3480.
60-day money-back window · ships from inside the US · order desk +1 (302) 200-3480