BreathiZen Reviews: Company Publishes Mullein, Ginger and Lemon Research Summary for Its Oral Spray

New reference file pairs each botanical on the BreathiZen spray label with published studies and regulatory reviews, and states where the evidence stops

LAKELAND, Florida, November 4, 2026 – BreathiZen, the maker of an oral herbal spray supplement, today published a research summary that sets out what scientific literature and health regulators report about the three botanicals on its label: mullein leaf, ginger root and organic lemon. The summary is intended for consumers who search Breathizen Reviews before deciding whether the product fits their routine.

The company said the summary responds to a pattern in the questions it receives. Google Trends lists “breathizen reviews,” “breathizen reviews and complaints,” “breathizen spray” and “breathizen spray reviews” among breakout search queries for the product over the past year, along with the alternate spelling “breathi zen” and the botanical name “mullein.” Many of those searches ask the same thing in different words: what is in the bottle, and what does the research on those ingredients actually say?

Official Website: forbreathizen.com

“Most people who write to us have already read a dozen opinions about mullein online, and a lot of them disagree with each other,” said Kevin Shaw, Media Relations Manager at BreathiZen. “We’d rather show people the studies themselves and be clear about which ones were done in a test tube, which were done in people, and which say nothing about a product like ours at all.”

What BreathiZen Spray Is

BreathiZen is a liquid dietary supplement for adults that is sprayed into the mouth. It is not an inhaler, a nasal spray or a chest rub, and the liquid is not meant to be breathed in. Each 2-fluid-ounce (60 mL) bottle provides 100 servings. The label directs users to shake the bottle and spray four pumps, about 0.60 mL, into the mouth or onto the tongue once a day. The company suggests taking it in the morning, before the first meal.

Because BreathiZen is sold as a dietary supplement, it falls under a different federal framework from medicines. The U.S. Food and Drug Administration does not approve dietary supplements before they go on sale, and supplement labels may not claim to diagnose, treat, cure or prevent any disease. The BreathiZen label carries the standard FDA statement to that effect.

How to Read the BreathiZen Label

The Supplement Facts panel lists a single “Proprietary Blend” of 154 mg per four-spray serving. It names three botanicals, in descending order by weight: mullein (Verbascum thapsus) leaf extract 10:1, ginger (Zingiber officinale) root extract and organic lemon (Citrus limon) extract. The other ingredients are purified water, glycerin, natural flavors, citric acid, potassium sorbate and sodium benzoate.

Two details on the panel shape how the research summary should be read.

The first is the “10:1” ratio beside mullein. It means the leaf was concentrated during extraction so that one part of finished extract corresponds to about 10 parts of dried leaf. The ratio describes how the extract was made, not how much mullein is in a serving.

The second is the proprietary blend format. Federal labeling rules allow a company to list the total weight of a blend without disclosing the weight of each ingredient, provided the ingredients appear in descending order. The panel therefore shows that mullein is the largest of the three botanicals by weight, but it does not show the exact amount of any single one. For that reason, the summary does not compare doses used in published studies with a serving of the spray. It says so in each section.

The summary also notes that some websites and advertisements have described the BreathiZen formula with ingredients that are not on the current panel. The company’s position is that the panel on the bottle is the authoritative record of what a serving contains, and that any description that differs from it should be checked against the label.

Mullein: Long Traditional Use, Few Human Trials

Mullein is a tall, woolly-leafed plant native to Europe and Asia that now grows widely across North America. Its leaves and flowers have a long history in European and Asian herbal traditions.

The most detailed regulatory review comes from the European Medicines Agency. Its Committee on Herbal Medicinal Products assessed mullein flower and concluded that, on the basis of long-standing use, mullein flower medicines can be used for relief of sore throat associated with dry cough and cold. That conclusion falls under the European “traditional use” category. It means the committee found evidence of safe use over at least 30 years and judged the effect plausible, while noting that clinical trial evidence is insufficient. The committee also recorded a lack of clinical studies on mullein flower medicines.

The research summary points out two limits of that review. It covers mullein flower, while BreathiZen uses mullein leaf extract. And it applies to licensed herbal medicines in the European Union, not to dietary supplements in the United States.

Academic reviews describe the same pattern of rich tradition and limited human data. A 2006 review by Tatli and Akdemir in the Fabad Journal of Pharmaceutical Sciences catalogued traditional uses of Verbascum species across many cultures, including as an expectorant and a demulcent, along with laboratory findings on extracts. A 2005 review by Turker and Gürel in Phytotherapy Research examined research on common mullein and noted that commercial interest in the plant was growing. A 2022 review led by Ashutosh Gupta, also in Phytotherapy Research, described the plant’s flavonoids, iridoid glycosides, saponins and other constituents, and summarized experimental work on its biological properties.

Most of that experimental work involved cell cultures, isolated tissues or animals. The University of Michigan Health library states that human clinical trials are lacking to confirm the use of mullein for any condition. The summary includes that statement alongside the reviews so that readers can see both the volume of laboratory interest and the absence of human trials.

Ginger: The Most Studied of the Three

Ginger root has a far larger clinical record than mullein. In 2020, a systematic review in the journal Nutrients by Anh and colleagues examined 109 randomized controlled trials of ginger. It found consistent support for some uses, most notably morning sickness in pregnancy, and more mixed results for others. The authors also reported that only 43 of the 109 trials met their criteria for high-quality evidence, and they called for better-designed studies.

None of the strongest findings in that review concern breathing. The research summary also cites a 2013 laboratory study from Columbia University, published in the American Journal of Respiratory Cell and Molecular Biology, which found that ginger and several of its compounds, including 6-gingerol and 6-shogaol, relaxed isolated airway smooth muscle tissue. That study was conducted on tissue samples, not on people, and it used purified compounds rather than a blended oral spray.

The National Center for Complementary and Integrative Health, part of the National Institutes of Health, describes ginger as generally well tolerated in the amounts eaten as food and in typical supplement amounts. It advises people who take medicines to talk with a health care provider before using ginger supplements.

Lemon: A Familiar Food Ingredient

Lemon is one of the most widely eaten citrus fruits, and lemon extracts are common food flavorings. A 2020 review by Klimek-Szczykutowicz and colleagues in the journal Plants described the chemistry of lemon fruit, juice and essential oil, including flavonoids, limonoids and other phenolic compounds, and their uses in the food, pharmaceutical and cosmetic industries.

The BreathiZen panel does not list a vitamin C amount. The summary therefore advises readers not to treat the lemon extract in the spray as a measured source of vitamin C.

The Other Ingredients on the Label

The non-botanical ingredients serve as the base, flavor and preservative system for a water-based liquid. Glycerin gives the liquid body and a mildly sweet taste. Citric acid adjusts acidity. Potassium sorbate and sodium benzoate are preservatives found in many beverages, syrups and sauces. The FDA lists glycerin, citric acid, potassium sorbate and sodium benzoate as generally recognized as safe for use in food when used in line with good manufacturing practice.

How the Summary Grades Each Source

The summary sorts its references by the kind of evidence they represent, because a reader who sees the word “study” next to an ingredient often cannot tell how much weight it carries. It uses four categories.

Traditional-use assessments, such as the European Medicines Agency review of mullein flower, record how long and how safely a plant has been used. They do not test whether it works, and the agency says so in its own conclusions.

Laboratory studies examine extracts or purified compounds on cells or isolated tissue. They can show how a compound behaves under controlled conditions, but they cannot show what happens when a person takes a product by mouth, where the compound is diluted, digested and processed by the body.

Animal studies add a living system but still differ from human use in dose, delivery and biology. The summary lists them separately and does not treat them as evidence about people.

Randomized controlled trials and systematic reviews of those trials are the strongest category the summary cites. Even there, the summary notes the quality of the trials. The 2020 ginger review, for example, judged fewer than half of the trials it examined to be high quality.

Each reference in the summary carries one of these four labels. Of the 10 references, none is a clinical trial of mullein leaf extract, and none studies the combination of ingredients in the BreathiZen spray.

“If a reader takes one thing from the summary, we hope it’s the habit of asking what kind of study they’re looking at,” Shaw said. “That applies to anything they read about supplements, including what they read about us.”

What the Research Does Not Show

The summary closes its research section with a point the company describes as the most important in the document. Every study it cites examined an individual ingredient, usually in a different form, amount or population from a four-spray serving of BreathiZen. A trial of ginger capsules does not show what a blended liquid containing ginger will do. Laboratory work on compounds isolated from mullein does not show what a person will notice after using a mullein leaf extract.

BreathiZen has not published clinical research on the finished spray. The summary makes no claim about what the product does for breathing, lung function or any health condition, and it does not include customer testimonials.

“We could have published a list of benefits,” Shaw said. “We published a reading list instead, with notes on what each study can and cannot tell you. If someone reads it and decides the product isn’t for them, that’s a reasonable outcome too.”

BreathiZen Reviews and Complaints: What Customers Raise Most

The company said the summary also draws on recurring themes in BreathiZen spray reviews posted online in recent months.

The most frequent complaint concerns the spray mechanism rather than the liquid. Some reviewers have described pumps that stopped dispensing after several uses or residue forming near the nozzle. The label directs users to shake the bottle well before each use and to store it in a cool, dry place away from heat, light and humidity. The company advises against moving the liquid into a different container, because the serving size on the label is based on the original metered pump.

A second theme is confusion about the formula, often traced to web pages that list ingredients not found on the current label. A third is difficulty reaching support. Customers with a problem can email the support address printed on the bottle, contact@customercs.com, with their order details and the lot number from the bottle.

Reviews have also included positive accounts and comments from customers who said it was too early to judge. The company said it does not cite individual reviews in the summary and encourages readers to look at a range of recent reviews, including lower-rated ones, rather than relying on any single account.

Who Should Check With a Doctor First

The BreathiZen label asks anyone who is pregnant or nursing, anyone under 18 and anyone with a known medical condition to speak with a physician before use, and not to exceed the suggested serving. People who take prescription medicines should also check with a doctor or pharmacist first. The NIH Office of Dietary Supplements advises telling every health care provider about any supplement in use, including before a scheduled procedure.

Breathing changes, a cough that lasts more than a few weeks, wheezing or chest discomfort can have many causes. These call for evaluation by a health care professional rather than a dietary supplement.

Frequently Asked Questions

1. What is BreathiZen spray? BreathiZen, sometimes searched as “breathi zen,” is an oral herbal spray dietary supplement. Four pumps are sprayed into the mouth once a day.

2. Is BreathiZen a nasal spray or an inhaler? No. It is a liquid supplement taken by mouth. It is not sprayed into the nose and is not meant to be inhaled.

3. What ingredients are in BreathiZen? The label lists a 154 mg proprietary blend of mullein leaf extract 10:1, ginger root extract and organic lemon extract, in a base of purified water and glycerin with natural flavors, citric acid, potassium sorbate and sodium benzoate.

4. Is BreathiZen approved by the FDA? The FDA does not approve dietary supplements before they go on sale. BreathiZen is sold as a dietary supplement and carries the standard FDA disclaimer.

5. Is there clinical research on BreathiZen itself? No. The research summary covers studies on individual ingredients. The company has not published a clinical study on the finished spray.

6. How long does one bottle last? At four pumps a day, a 60 mL bottle provides 100 servings.

7. Where can I read the research summary? The summary is posted on the BreathiZen website, forbreathizen.com. The full reference list also appears at the end of this release.

References

1. European Medicines Agency, Committee on Herbal Medicinal Products. Verbasci flos (mullein flower): summary for the public and EU herbal monograph.

2. Tatli II, Akdemir ZS. Traditional uses and biological activities of Verbascum species. Fabad Journal of Pharmaceutical Sciences. 2006;31(2):85-96.

3. Turker AU, Gürel E. Common mullein (Verbascum thapsus L.): recent advances in research. Phytotherapy Research. 2005;19(9):733-739. doi:10.1002/ptr.1653

4. Gupta A, Atkinson AN, Pandey AK, Bishayee A. Health-promoting and disease-mitigating potential of Verbascum thapsus L. (common mullein): a review. Phytotherapy Research. 2022.

5. University of Michigan Health. Mullein. Health Library.

6. Anh NH, Kim SJ, Long NP, et al. Ginger on human health: a comprehensive systematic review of 109 randomized controlled trials. Nutrients. 2020;12(1):157. doi:10.3390/nu12010157

7. Townsend EA, Siviski ME, Zhang Y, et al. Effects of ginger and its constituents on airway smooth muscle relaxation and calcium regulation. American Journal of Respiratory Cell and Molecular Biology. 2013;48(2):157-163. doi:10.1165/rcmb.2012-0231OC

8. National Center for Complementary and Integrative Health. Ginger: Usefulness and Safety.

9. Klimek-Szczykutowicz M, Szopa A, Ekiert H. Citrus limon (lemon) phenomenon: a review of the chemistry, pharmacological properties, applications in the modern pharmaceutical, food, and cosmetics industries, and biotechnological studies. Plants. 2020;9(1):119. doi:10.3390/plants9010119

10. NIH Office of Dietary Supplements. Dietary Supplements: What You Need to Know.

None of these sources mentions, reviews or endorses BreathiZen.

About BreathiZen

BreathiZen, based in Lakeland, Florida, produces an oral herbal spray dietary supplement for adults, made in the USA with globally sourced ingredients. Its formula combines mullein leaf, ginger root and organic lemon extracts in a water and glycerin base.

Media Contact Kevin Shaw Media Relations Manager, BreathiZen Email: contact@customercs.com Phone: +1 (507) 448-8190 Website: forbreathizen.com

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Individual experiences vary. Consult a qualified health care professional before starting any dietary supplement.