BreathiZen Side Effects And Interactions
No side-effect list was published for this product. This one is built from what each named ingredient is known to do.
No side-effect list was published for BreathiZen, so this page is built from the known profile of its ten named ingredients. The most likely issues are stomach upset from bromelain or ginger, caffeine from green tea extract, and drowsiness from L-theanine, California poppy or corydalis. The most important interaction is with blood thinners.
How this page was built
The seller did not publish a side-effect list, and we are not going to invent one. What we have done instead is take the ten named ingredients and write down what each is known to cause, drawing on published research and on the NIH's own guidance about supplement interactions (NCCIH (National Institutes of Health)).
There is a limit to how far that can go. Because the amounts are not published, nobody can say whether any ingredient is present at a level likely to cause anything. A trace of green tea extract behaves differently from 500 mg of it. Read everything below as "what to watch for", not "what will happen".
Stop and ask if any of these appear
Unusual bruising or bleeding, including bleeding gums. A rash or swelling. Yellowing of the skin or eyes. Unusual drowsiness. Persistent stomach pain. None of these is expected, and all of them are reasons to stop and speak to a clinician.
Ingredient by ingredient
| Ingredient | What it can cause | Who needs to be careful |
|---|---|---|
| Bromelain | Stomach upset, diarrhoea, mouth or throat irritation. It slows clotting. Allergy is possible if you react to pineapple or latex | Blood thinners. Anyone with surgery booked. Pineapple or latex allergy |
| Green tea extract | Caffeine effects: jitteriness, a faster pulse, poor sleep. Liver strain has been reported with concentrated extracts at high doses | Caffeine-sensitive people. Anyone with a liver condition. Anyone on stimulants |
| Ginger root | Heartburn, reflux, mild stomach upset. Mild blood thinning | Anyone with reflux or gallstones. Anyone on a blood thinner |
| L-theanine | Drowsiness in some people. A mild drop in blood pressure | Anyone on blood pressure medicine or a sedative |
| California poppy | Drowsiness. Safety data is thin and it has never been tested alone | Anyone on a sedative or sleeping tablet. Pregnancy |
| Corydalis root | Sedation, stomach upset. Human safety data is very limited | Anyone on opioid pain medicine, a sedative, or with a liver condition. Pregnancy |
| Marshmallow root | Rarely anything of its own. It can slow absorption of other medicines taken at the same moment | Anyone on a medicine where timing matters — leave an hour either side |
| Mullein leaf | Rarely, skin or throat irritation | Anyone allergic to plants in the figwort family |
| Cordyceps militaris | Mild stomach upset. It may affect immune signalling | Anyone on an immunosuppressant. Anyone with an autoimmune condition |
| Organic lemon | Acidity, which can bother reflux or sensitive teeth | Anyone with bad reflux or enamel erosion |
The interactions that matter most
Blood thinners — the important one
Bromelain slows clotting. Ginger does the same, more mildly. Green tea affects vitamin K handling. Stack those on top of warfarin, apixaban, rivaroxaban, clopidogrel or a daily aspirin and you have a real, documented interaction risk. This is not a theoretical caution, and it is the one reason on this page to speak to a clinician before you start rather than afterwards.
Surgery
Stop at least two weeks before any planned operation, including dental surgery, and tell the team you were taking it. Bromelain is the reason.
Sedatives, sleeping tablets and opioid pain medicine
Three ingredients here are mildly calming: L-theanine, California poppy and corydalis. None is strong. Together, on top of a prescribed sedative, they can add up to more drowsiness than you planned for.
Asthma, COPD and blood pressure medicine
The seller's own FAQ says to show the label to a clinician if you take any of these, and we agree. The concern is less about a direct clash and more about nobody substituting a spray for a prescribed treatment. Never reduce a prescribed inhaler or tablet because you started a supplement.
Immunosuppressants
Cordyceps has effects on immune signalling. If you take an immunosuppressant after a transplant or for an autoimmune condition, this needs medical advice.
Who should not take it at all
- Anyone under 18.
- Anyone pregnant or breastfeeding.
- Anyone on a blood thinner, without clinical advice first.
- Anyone with surgery booked in the next two weeks.
- Anyone with a known allergy to pineapple, latex or plants in the figwort family.
- Anyone with a liver condition, without clinical advice first.
How to have the conversation
Take the bottle with you, or a photograph of the label. Say which medicines you take and ask specifically about bromelain and green tea extract. It is a two-minute conversation and it resolves everything on this page.
What to do if you react to it
Stop taking it
Do not try to work through it or halve the dose to see.
Write down what happened
What, when, how long after the dose, and what else you took that day. Your clinician will ask all four.
Speak to a clinician
Especially for bleeding, bruising, a rash, swelling or any yellowing of the skin or eyes.
Call the order desk
Ring +1 (302) 200-3480 with your order ID. A reaction is a perfectly good reason to use the 60-day guarantee, and the desk handles returns.
Report it
Serious reactions to a supplement can be reported to the FDA through its MedWatch programme. It is how problems in this category get found.
Safety questions
Is BreathiZen safe?
For most healthy adults, botanicals like these are well tolerated. That is not the same as safe for everyone. Because the amounts are not published, no one can check them against the doses used in research, and that limits what anybody can honestly say.
What are the side effects?
No side-effect list was published for this product. Based on the ingredients: bromelain can upset the stomach and can raise bleeding risk, green tea extract carries caffeine and has been linked to liver problems at high doses, and ginger can cause heartburn.
Can I take it with my medication?
Ask a clinician first, and take the bottle with you. Bromelain and green tea can both add to a blood thinner. Anything calming can add to a sedative. The NIH's NCCIH publishes a plain guide to supplement and medicine interactions, and we link to it.
Can I take it before surgery?
Stop at least two weeks before planned surgery and tell your surgical team. Bromelain affects clotting.
I have asthma or COPD. Can I take it?
Show the label to your clinician before you start. This is a supplement, not a treatment and not a rescue medicine. Never stop or reduce a prescribed inhaler or tablet because you started a supplement.
Does BreathiZen contain caffeine?
Green tea extract can carry caffeine, and the amount is not published. If caffeine is a problem for you, ask the desk before you order.
Is it addictive?
There is nothing in the named ingredient list with a recognised dependence risk.
Can children take it?
No. Adults 18 and over.
References
Every source linked here was opened and checked.
- Braun et al. — 2005. Therapeutic use, efficiency and safety of the proteolytic pineapple enzyme Bromelain-POS in children with acute sinusitis in Germany. In Vivo · PMID 15796206.
- Leelakanok et al. — 2023. Efficacy and safety of bromelain: A systematic review and meta-analysis. Nutrition and Health · PMID 37157782.
- Gupta et al. — 2022. Health-promoting and disease-mitigating potential of Verbascum thapsus L. (common mullein): A review. Phytotherapy Research · PMID 35088467.
- Fink et al. — 2018. Marshmallow Root Extract for the Treatment of Irritative Cough: Two Surveys on Users' View on Effectiveness and Tolerability. Complementary Medicine Research · PMID 30064132.
- Bonaterra et al. — 2020. Anti-inflammatory and Anti-oxidative Effects of Phytohustil and Root Extract of Althaea officinalis L. on Macrophages in vitro. Frontiers in Pharmacology · PMC7090173.
- Hirsch et al. — 2016. Cordyceps militaris Improves Tolerance to High-Intensity Exercise After Acute and Chronic Supplementation. Journal of Dietary Supplements · PMID 27408987.
- Oh et al. — 2018. Consuming Green Tea at Least Twice Each Day Is Associated with Reduced Odds of Chronic Obstructive Lung Disease in Middle-Aged and Older Korean Adults. The Journal of Nutrition · PMID 29378037.
- Townsend et al. — 2013. Effects of Ginger and Its Constituents on Airway Smooth Muscle Relaxation and Calcium Regulation. American Journal of Respiratory Cell and Molecular Biology · PMID 23065130.
- Evans et al. — 2021. A Randomized, Triple-Blind, Placebo-Controlled, Crossover Study to Investigate the Efficacy of a Single Dose of l-Theanine on Stress in a Healthy Adult Population. Neurology and Therapy · PMID 34562208.
- Hanus et al. — 2004. Double-blind, randomised, placebo-controlled study of a fixed combination containing Crataegus oxyacantha and Eschscholtzia californica with magnesium in mild-to-moderate anxiety disorders. Current Medical Research and Opinion · PMID 14741074.
- Zhang et al. — 2014. A Novel Analgesic Isolated from a Traditional Chinese Medicine. Current Biology · PMID 24388848.
- Hemilä et al. — 2013. Vitamin C for preventing and treating the common cold. Cochrane Database of Systematic Reviews · PMID 23440782.
- U.S. Food and Drug Administration. Is It Really 'FDA Approved'?. FDA.gov.
- U.S. Food and Drug Administration. Questions and Answers on Dietary Supplements. FDA.gov.
- Electronic Code of Federal Regulations. 21 CFR Part 111: Current Good Manufacturing Practice for Dietary Supplements. eCFR.gov.
- NCCIH (National Institutes of Health). Know the Science: How Medications and Supplements Can Interact. NCCIH.nih.gov.
Order BreathiZen from the official website
One serving a day, ten named botanicals, and sixty days to change your mind. Start with one bottle if this is new to you.
60-day money-back guarantee · ships from the United States · questions on +1 (302) 200-3480