Drug & supplement interaction

Ozone Therapy + Ondansetron

Ondansetron brand name: Zofran.

No Known Interaction

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Updated July 2026 · Pair last verified Sep 20, 2026

The bottom line No known interaction

We found no known interaction between Ozone Therapy and Ondansetron in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Ozone Therapy and Ondansetron

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Ondansetron and Ozone Therapy in our sources. This does not guarantee that the combination is completely free of risk — research on Ozone Therapy alongside specific medications may be limited.

Worth understanding: our licensed dataset holds no drug-interaction record for Ozone Therapy at all — not against Ondansetron, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.

Ozone Therapy is a treatment rather than something you take. Tell whoever provides it which medicines you use, and ask your prescriber whether it is appropriate for your health and treatment. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Ozone Therapy safety at a glance

Ozone Therapy overall Use caution Ozone is a toxic gas if inhaled, and most uses lack strong proof of benefit, so professional medical oversight is essential.

Pregnancy Avoid There is not enough safety data, so it is best avoided during pregnancy.

Breastfeeding Avoid There is not enough safety data, so it is best avoided while breastfeeding.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Ondansetron and Ozone Therapy? Ask Dr. Brian Staiger, PharmD, BCPS directly ›

What to actually watch for

No Interaction Found — But Data Suggests Ozone Therapy and Ondansetron May Share a Side Effect

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so having Ozone Therapy while taking the medicine can make those effects more likely to turn up, and harder to pin on one or the other if they do. One of them is worth acting on rather than waiting out — marked below.

A heart attack Worth acting on Additional detail
Ozone Therapy
“Ozone therapy, applied locally or rectally, has not been linked to serious adverse effects; however, a thorough evaluation of safety outcomes with these routes of administration has not been conducted.

Inhaled ozone therapy and ozone therapy injected into a herniated disc have been linked to cases of Anton syndrome, involving blindness secondary to ischemic stroke or secondary to encephalopathy, and also cases of hea…”

Ozone Therapy · Natural Medicines adverse-effect record, reported in cardiac arrest.
6 sources cited

16181. Re L, Mawsouf MN, Menendez S, et al. Ozone therapy: clinical and basic evidence of its therapeutic potential. Arch Med Res 2008;39:17-26. PubMed

16182. Bocci VA. Tropospheric ozone toxicity vs. usefulness of ozone therapy. Arch Med Res 2007;38:265-7. PubMed

106465. Santos GM, Pacheco RL, Bussadori SK, et al. Effectiveness and Safety of Ozone Therapy in Dental Caries Treatment: Systematic Review and Meta-analysis. J Evid Based Dent Pract 2020;20(4):101472. PubMed

98145. Avci S, Büyükcam F, Demir ÖF, Özkan S. Anton syndrome during oxygen-ozone therapy. Am J Emerg Med. 2015;33(6):856.e1-2. PubMed

98153. Vaiano AS, Valente C, De Benedetti G, Caramello G. Transient cortical blindness after intradiscal oxygen-ozone therapy. Indian J Ophthalmol. 2016;64(12):944-946. PubMed

102986. Chirchiglia D, Chirchiglia P, Stroscio C, Volpentesta G, Lavano A. Suspected Pulmonary Embolism after Oxygen-Ozone Therapy for Low Back Pain. J Neurol Surg A Cent Eur Neurosurg. 2019;80(6):503-506. PubMed
“Inhaled ozone therapy and ozone therapy injected into a herniated disc have been associated with cases of Anton syndrome. Anton syndrome involves blindness secondary to ischemic stroke. The patient is typically unaware of the blindness due to cerebral damage. Intravenously, ozone infusion has been linked to pulmonary embolism and death.”

Ozone Therapy · Natural Medicines adverse-effect record, reported in cardiac arrest.
5 sources cited

98145. Avci S, Büyükcam F, Demir ÖF, Özkan S. Anton syndrome during oxygen-ozone therapy. Am J Emerg Med. 2015;33(6):856.e1-2. PubMed

98153. Vaiano AS, Valente C, De Benedetti G, Caramello G. Transient cortical blindness after intradiscal oxygen-ozone therapy. Indian J Ophthalmol. 2016;64(12):944-946. PubMed

16183. Bocci VA. Scientific and medical aspects of ozone therapy. State of the art. Arch Med Res 2006;37:425-35. PubMed

102986. Chirchiglia D, Chirchiglia P, Stroscio C, Volpentesta G, Lavano A. Suspected Pulmonary Embolism after Oxygen-Ozone Therapy for Low Back Pain. J Neurol Surg A Cent Eur Neurosurg. 2019;80(6):503-506. PubMed

102989. He R, Huang Q, Yan X, Liu Y, Yang J, Chen X. A Case of Paradoxical Embolism Causing Anterior Spinal Cord Syndrome and Acute Myocardial Infarction Following the Intradiscal Oxygen-Ozone Therapy. Front Neurol. 2019;10:137. PubMed
Ondansetron

Listed in the ADVERSE REACTIONS section of the FDA label for Ondansetron. Read the label on DailyMed ›

Reported for Ozone Therapy but not commonly for Ondansetron: blood clots, memory problems, a stroke or mini-stroke and hearing loss.

Effects for Ondansetron come from the ADVERSE REACTIONS section of its FDA label; effects for Ozone Therapy come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 121,840 voluntary FDA FAERS reports for Ondansetron that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

From our Q&A

Questions About Ozone Therapy or Ondansetron

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Ozone Therapy or Ondansetron, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Ondansetron

This page covers Ozone Therapy only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Ondansetron page lists 195 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Grapefruit (major), Lithium (major), St. John's Wort (major) and 1,3-dmaa (moderate).

By severity: 4 major · 145 moderate · 46 minor.

From our pharmacist’s overview on the Ondansetron page

“Ondansetron (Zofran) often stands between you and relentless nausea from chemotherapy or surgery, so read this page carefully. Four of the 195 ingredients rate major.”

Reviewed by 2 · Jul 18, 2026

Open the Ondansetron interaction page

How much people look this up

Where Ozone Therapy and Ondansetron Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Ozone Therapy

Steady interest

#1,282 of 1,452 supplements looked up here in the last 7 days

29 days ago today

Medication Ondansetron

Top half

#1,381 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?

Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Ozone Therapy reference on this page ↓
Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Ozone Therapy and Ondansetron records this page draws on were last updated July 10, 2026.
What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.

Data structure & sourcing designed and verified by Dr. Brian Staiger, PharmD, BCPS.

Treatment approach

About Ozone Therapy

What is Ozone Therapy?

Wound and skin infections
Joint and back pain
Immune support
Dental and gum care
Chronic infections
General 'detox' and wellness claims

Ozone therapy uses a reactive form of oxygen for a wide range of unproven health claims, and it is not a dietary supplement or herb. High-quality evidence for most uses is limited, and breathing ozone is harmful to the lungs. If you are considering it, talk to a licensed doctor or pharmacist first, since safety and benefit are not well established.

Medical ozone gas (a mixture of oxygen and ozone) · Gas insufflation, ozonated water, ozonated oils, major and minor autohemotherapy (blood treatment), injections

An interaction check asks whether these two react with each other — it does not ask whether Ozone Therapy is a good idea for someone in your situation. Here is what our Ozone Therapy record says about it on its own.

Ozone Therapy: dosing

There is no standardized, proven dose for ozone therapy, and it varies widely between providers and methods. Concentrations, volumes, and treatment schedules are not well established by high-quality research.Because ozone is reactive and potentially harmful, you should never try to make or use it at home. If you are considering ozone therapy, only do so under the supervision of a licensed, experienced healthcare professional, and discuss it with your own doctor or pharmacist first to make sure it is appropriate and safe for you.

From our Ozone Therapy monograph — the full record covers uses, side effects and every documented interaction.

Read the full Ozone Therapy monograph & all interactions

Medication

About Ondansetron

What Is Ondansetron Used For?

Brand name: Zofran

Ondansetron is used to prevent nausea and vomiting in several situations. Oral forms (tablets, orally disintegrating tablets, and oral solution) are approved to prevent nausea and vomiting from highly or moderately emetogenic (nausea-causing) cancer chemotherapy, from radiation therapy to the abdomen or whole body, and from surgery.

Ondansetron injection (given intravenously or intramuscularly in a clinical setting) is approved to prevent nausea and vomiting from emetogenic cancer chemotherapy — including high-dose cisplatin — in adults and children as young as 6 months old, as well as to prevent postoperative nausea and vomiting.

Most-Reported Side Effects for Ondansetron

From FAERS, the FDA’s public side-effect reporting system (121,840 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Nausea 14,459 reports

Fatigue 10,275 reports

Diarrhea 9,488 reports

Vomiting 8,777 reports

Dyspnea 5,971 reports

See full Ondansetron drug information

Keep checking

Other Drugs & Ozone Therapy

Browse every other medication we’ve checked against Ozone Therapy — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major

0Moderate

0Minor

2,829No known interaction

2,829 No interaction

No interaction 2,829 drugs checked — show the list

We also checked Ozone Therapy against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Ozone Therapy list.

See the full Ozone Therapy interactions page

See every supplement checked against Ondansetron, ranked by severity

Evidence & sources

Ozone Therapy References

The 39 references that drive our Ozone Therapy monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

Re L, Mawsouf MN, Menendez S, et al. Ozone therapy: clinical and basic evidence of its therapeutic potential. Arch Med Res 2008;39:17-26. PubMed
Bocci VA. Tropospheric ozone toxicity vs. usefulness of ozone therapy. Arch Med Res 2007;38:265-7. PubMed
Bocci VA. Scientific and medical aspects of ozone therapy. State of the art. Arch Med Res 2006;37:425-35. PubMed
Tafil-Klawe M, Wozniak A, Drewa T, et al. Ozone therapy and the activity of selected lysosomal enzymes in blood serum of patients with lower limb ischaemia associated with obliterative atheromatosis. Med Sci Monit 2002;8(7):CR520-5.
Ragab A, Shreef E, Behiry E, et al. Randomised, double-blinded, placebo-controlled, clinical trial of ozone therapy as treatment of sudden sensorineural hearing loss. J Laryngol Otol 2009;123(1):54-60. PubMed
Garber GE, Cameron DW, Hawley-Foss N, et al. The use of ozone-treated blood in the therapy of HIV infection and immune disease: a pilot study of safety and efficacy. AIDS 1991;5(8):981-4. PubMed
Andreula CF, Simonetti L, De Santis F, et al. Minimally invasive oxygen-ozone therapy for lumbar disk herniation. AJNR Am J Neuroradiol 2003;24(5):996-1000.
Pawlak-Osinska K, Kazmierczak H, Kazmierczak W, Szpoper M. Ozone therapy and pressure-pulse therapy in Meniere's disease. Int Tinnitus J 2004;10(1):54-7.
Avci S, Büyükcam F, Demir ÖF, Özkan S. Anton syndrome during oxygen-ozone therapy. Am J Emerg Med. 2015;33(6):856.e1-2. PubMed
Celakil T, Muric A, Gokcen Roehlig B, Evlioglu G, Keskin H. Effect of high-frequency bio-oxidative ozone therapy for masticatory muscle pain: a double-blind randomised clinical trial. J Oral Rehabil. 2017;44(6):442-451. PubMed
Dogan M, Ozdemir Dogan D, Düger C, et al. Effects of high-frequency bio-oxidative ozone therapy in temporomandibular disorder-related pain. Med Princ Pract. 2014;23(6):507-10. PubMed
León Fernández OS, Viebahn-Haensler R, Cabreja GL, et al. Medical ozone increases methotrexate clinical response and improves cellular redox balance in patients with rheumatoid arthritis. Eur J Pharmacol. 2016;789:313-318. PubMed
Magalhaes FN, Dotta L, Sasse A, Teixera MJ, Fonoff ET. Ozone therapy as a treatment for low back pain secondary to herniated disc: a systematic review and meta-analysis of randomized controlled trials. Pain Physician. 2012;15(2):E115-29. DOI
Sivalingam VP, Panneerselvam E, Raja KV, Gopi G. Does Topical Ozone Therapy Improve Patient Comfort After Surgical Removal of Impacted Mandibular Third Molar? A Randomized Controlled Trial. J Oral Maxillofac Surg. 2017;75(1):51.e1-51.e9. PubMed
Sönmez O, Külahli I, Vural A, Sahin MI, Aydin M. The evaluation of ozone and betahistine in the treatment of tinnitus. Eur Arch Otorhinolaryngol. 2013;270(7):1999-2006. PubMed
Vaiano AS, Valente C, De Benedetti G, Caramello G. Transient cortical blindness after intradiscal oxygen-ozone therapy. Indian J Ophthalmol. 2016;64(12):944-946. PubMed
Zhang Y, Ma Y, Jiang J, Ding T, Wang J. Treatment of the lumbar disc herniation with intradiscal and intraforaminal injection of oxygen-ozone. J Back Musculoskelet Rehabil. 2013;26(3):317-22. PubMed
Arias-Vázquez PI, Tovilla-Zárate CA, Hernández-Díaz Y, et al. Short-Term Therapeutic Effects of Ozone in the Management of Pain in Knee Osteoarthritis: A Meta-Analysis.PM R. 2019;11(8):879-887. PubMed
Bahrami MH, Raeissadat SA, Nezamabadi M, Hojjati F, Rahimi-Dehgolan S. Interesting effectiveness of ozone injection for carpal tunnel syndrome treatment: a randomized controlled trial. Orthop Res Rev. 2019;11:61-67.
Celakil T, Muric A, Gökcen Roehlig B, Evlioglu G. Management of pain in TMD patients: Bio-oxidative ozone therapy versus occlusal splints. Cranio. 2019;37(2):85-93. PubMed
Chirchiglia D, Chirchiglia P, Stroscio C, Volpentesta G, Lavano A. Suspected Pulmonary Embolism after Oxygen-Ozone Therapy for Low Back Pain. J Neurol Surg A Cent Eur Neurosurg. 2019;80(6):503-506. PubMed
de Sire A, Stagno D, Minetto MA, Cisari C, Baricich A, Invernizzi M. Long-term effects of intra-articular oxygen-ozone therapy versus hyaluronic acid in older people affected by knee osteoarthritis: A randomized single-blind extension study. J Back Muscul PubMed
Gandhi KK, Cappetta EG, Pavaskar R. Effectiveness of the adjunctive use of ozone and chlorhexidine in patients with chronic periodontitis. BDJ Open. 2019;5:17. PubMed
He R, Huang Q, Yan X, Liu Y, Yang J, Chen X. A Case of Paradoxical Embolism Causing Anterior Spinal Cord Syndrome and Acute Myocardial Infarction Following the Intradiscal Oxygen-Ozone Therapy. Front Neurol. 2019;10:137. PubMed
Hu B, Zheng J, Liu Q, Yang Y, Zhang Y. The effect and safety of ozone autohemotherapy combined with pharmacological therapy in postherpetic neuralgia. J Pain Res. 2018;11:1637-1643. PubMed
Nociti V, Picarelli C, Losavio FA, et al. Posterior Reversible Encephalopathy Syndrome After Intramuscular Oxygen-Ozone Therapy. Can J Neurol Sci. 2020;47(3):416-418. PubMed
Noori-Zadeh A, Bakhtiyari S, Khooz R, Haghani K, Darabi S. Intra-articular ozone therapy efficiently attenuates pain in knee osteoarthritic subjects: A systematic review and meta-analysis. Complement Ther Med. 2019;42:240-247. PubMed
Tasdemir Z, Oskaybas MN, Alkan AB, Cakmak O. The effects of ozone therapy on periodontal therapy: A randomized placebo-controlled clinical trial. Oral Dis. 2019;25(4):1195-1202. PubMed
Tirelli U, Cirrito C, Pavanello M, Piasentin C, Lleshi A, Taibi R. Ozone therapy in 65 patients with fibromyalgia: an effective therapy. Eur Rev Med Pharmacol Sci. 2019;23(4):1786-1788.
Rapone B, Ferrara E, Corsalini M, et al. The Effect of Gaseous Ozone Therapy in Conjunction with Periodontal Treatment on Glycated Hemoglobin Level in Subjects with Type 2 Diabetes Mellitus: An Unmasked Randomized Controlled Trial. Int J Environ Res Publi PubMed
Santos GM, Pacheco RL, Bussadori SK, et al. Effectiveness and Safety of Ozone Therapy in Dental Caries Treatment: Systematic Review and Meta-analysis. J Evid Based Dent Pract 2020;20(4):101472. PubMed
Talmaç AC, Çalisir M. Efficacy of gaseous ozone in smoking and non-smoking gingivitis patients. Ir J Med Sci 2021;190(1):325-333. PubMed
Moraschini V, Kischinhevsky ICC, Calasans-Maia MD, et al. Ineffectiveness of ozone therapy in nonsurgical periodontal treatment: a systematic review and metaanalysis of randomized clinical trials. Clin Oral Investig 2020;24(6):1877-1888. PubMed
Simon C, Le Corroller T, Pauly V, Creze M, Champsaur P, Guenoun D. Intradiscal oxygen-ozone therapy for the treatment of symptomatic lumbar disc herniation: A preliminary study. J Neuroradiol 2022;49(2):180-186. PubMed
Chaudhry K, Rustagi N, Bali R, et al. Efficacy of adjuvant ozone therapy in reducing postsurgical complications following impacted mandibular third-molar surgery: A systematic review and meta-analysis. J Am Dent Assoc 2021;152(10):842-854. PubMed
Kaymaz S, Karasu U, Alkan H, et al. Efficacy of local oxygen-ozone therapy for the treatment of digital ulcers refractory to medical therapy in systemic sclerosis: A randomized controlled study. Mod Rheumatol 2021.
Kelekis A, Bonaldi G, Cianfoni A, et al. Intradiscal oxygen-ozone chemonucleolysis versus microdiscectomy for lumbar disc herniation radiculopathy: a non-inferiority randomized control trial. Spine J 2022;(6):895-909. PubMed
Colombo M, Gallo S, Garofoli A, Poggio C, Arciola CR, Scribante A. Ozone gel in chronic periodontal disease: A randomized clinical trial on the anti-inflammatory effects of ozone application. Biology (Basel) 2021;10(7):625. PubMed
Hassanien M, Rashad S, Mohamed N, Elawamy A, Ghaly MS. Non-invasive Oxygen-Ozone therapy in treating digital ulcers of patients with systemic sclerosis. Acta Reumatol Port. 2018;43(3):210-216.

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Having Ozone Therapy While Taking Ondansetron: Common Questions

Is it safe to have Ozone Therapy while taking Ondansetron?

We do not list a known interaction between Ozone Therapy and Ondansetron. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.

Do Ozone Therapy and Ondansetron have any of the same side effects?

Yes — our sources link each of them separately to one of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.

Does Ondansetron interact with any supplements?

Yes. Ondansetron has documented interactions with 195 supplements in our database — Ozone Therapy is not one of them. The Ondansetron interaction page linked on this page lists every one, ranked by severity.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Where next

Keep Exploring

Ozone Therapy monograph Uses, safety profile, and every drug interaction in one place Ondansetron drug information The full plain-English guide to this medication Ondansetron supplement interactions Every supplement checked against Ondansetron, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 39 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Ondansetron and Ozone Therapy?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.