Herb & supplement monograph

Oxygen Therapy Drug Interactions, Uses, Safety & More

Medically reviewed by ·Updated June 2026
What is this page for?

First and foremost: how Oxygen Therapy interacts with medications. The heart of this page is the interaction list — every drug Oxygen Therapy is known to interact with, and how serious each one is.

But these pages have grown well beyond that into a full monograph — what Oxygen Therapy is, what people use it for and how strong the evidence is, its safety and side effects, and answers to the questions we’re asked most — written and reviewed by the clinical staff at HelloPharmacist. It’s educational information from our licensed clinical databases, not medical advice, and we don’t sell or endorse products. Our editorial policy

Check Oxygen Therapy against your medication

Add one medication
Oxygen Therapy
+
Start typing any prescription or over-the-counter drug name.
Reviewed by licensed pharmacists Sourced from Natural Medicines
On this page
Interaction report

Drugs that interact with Oxygen Therapy

0 medications have a known interaction with Oxygen Therapy, graded by severity. Select any drug for the full evidence-based detail.

We don’t currently list any known drug interactions for Oxygen Therapy. This doesn’t guarantee none exist — always confirm with your pharmacist before combining supplements with your medications.

Read The List Like a Pharmacist

What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

  • Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
  • Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
  • Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
  • No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

  • Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
  • Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
  • Possible. Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
  • Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

  • Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
  • Each drug listed above links to the full report for that exact Oxygen Therapy combination — clinical detail, likelihood, evidence level, and citations.
  • Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.
Monograph

Oxygen Therapy: Uses, Safety & Side Effects

Medically reviewed by · Reviewed June 2026 ·
The bottom line

Oxygen therapy is a real medical treatment that gives extra oxygen to people whose blood oxygen is low, and it can be lifesaving when prescribed and monitored by a healthcare provider. It is not a dietary supplement, and using too much oxygen or relying on unproven 'oxygen' wellness products can be harmful or simply ineffective. Always use oxygen only under medical guidance.

Common forms
Medical oxygen gas (nasal cannula, face mask, oxygen concentrator), hyperbaric oxygen chambers, and marketed 'oxygen' products such as canned oxygen, oxygenated water, and hydrogen peroxide drops
People commonly use it for
  • Low blood oxygen from lung disease (COPD)
  • Severe COVID-19 or pneumonia
  • Hyperbaric treatment of wounds and decompression sickness
  • Carbon monoxide poisoning
  • Cluster headaches
  • Marketed for 'energy,' altitude, or general wellness

Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.

Safety at a glance
OverallUse caution

Medical oxygen is safe and lifesaving when prescribed, but it is a drug that can cause harm if used without proper testing and monitoring.

PregnancyUse caution

Supplemental oxygen may be used in pregnancy when medically needed, but only under a doctor's supervision.

BreastfeedingUse caution

Use only as directed by a healthcare provider; medical oxygen does not pass into milk, but the underlying condition needs proper care.

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

Jump to a section

Overview

Oxygen therapy means giving a person extra oxygen to breathe. It is a medical treatment, not a plant or an herb. Oxygen is the gas our bodies need to make energy in every cell. When the lungs or heart cannot move enough oxygen into the blood, doctors may prescribe oxygen to make up the difference.

Medical oxygen comes in several forms. The most common is oxygen delivered through a small tube in the nose (nasal cannula) or a face mask, supplied by tanks or by a machine called an oxygen concentrator. A special form called hyperbaric oxygen therapy uses a pressurized chamber to deliver 100% oxygen at higher-than-normal pressure.

You may also see 'oxygen' marketed as a wellness product, such as canned oxygen for sports or altitude, oxygenated water, or hydrogen peroxide drops. These commercial products are very different from prescribed medical oxygen and are not proven to improve health in healthy people.

Uses & effectiveness

Medical oxygen is well proven and often lifesaving for people with low blood oxygen levels (hypoxemia). This includes serious lung diseases like COPD, severe pneumonia, severe COVID-19, heart failure, and other conditions where the body cannot get enough oxygen on its own. In these situations, the evidence strongly supports its use.

Hyperbaric oxygen therapy has solid evidence for certain specific conditions, such as decompression sickness ('the bends'), carbon monoxide poisoning, gas gangrene, and some hard-to-heal wounds like diabetic foot ulcers. It is also studied for many other conditions, but evidence is mixed or limited for most of those.

High-flow oxygen is a recognized treatment for cluster headaches and can relieve attacks for many people.

On the other hand, claims that breathing extra oxygen boosts energy, athletic performance, or general health in people with normal oxygen levels are not supported by good evidence. Canned oxygen, oxygenated water, and hydrogen peroxide products are not proven to provide these benefits, and some can be dangerous.

How it works

Every cell in the body uses oxygen to turn food into energy. Oxygen is carried from the lungs into the blood, where it attaches to a protein called hemoglobin in red blood cells, and is then delivered to tissues and organs.

When a person's lungs or heart cannot keep blood oxygen at a healthy level, organs can be starved of oxygen and become damaged. Supplemental oxygen raises the amount of oxygen available, helping the blood carry more to where it is needed.

In hyperbaric therapy, the higher pressure forces much more oxygen to dissolve into the blood and tissues. This can help fight certain infections, support wound healing, and clear harmful gases like carbon monoxide more quickly.

Safety & precautions

Although oxygen is natural and necessary, medical oxygen is treated as a drug because the wrong amount can cause harm. Too little does not help; too much can be toxic to the lungs and, in some people with chronic lung disease, can actually slow their breathing. For this reason, oxygen should be used at the flow rate and for the time your provider prescribes, often guided by tests of your blood oxygen level.

Oxygen also makes fires burn much faster. Never smoke or allow open flames near oxygen equipment. Keep tanks away from heat and store them properly.

Pregnancy: Supplemental oxygen may be given during pregnancy when there is a medical need, such as low oxygen levels, but only under a doctor's supervision. Do not self-treat.

Breastfeeding: Medical oxygen does not enter breast milk, but the condition requiring oxygen should be managed by a healthcare provider. Use only as directed.

People with certain conditions, such as some chronic lung diseases, must be especially careful, since too much oxygen can be dangerous for them. Hyperbaric therapy has its own risks and is not suitable for everyone.

Side effects

Common, usually mild side effects of breathing supplemental oxygen include a dry or irritated nose, dry mouth, nosebleeds, and skin irritation where the tubing or mask sits. A humidifier and skin care can help.

More serious problems can occur with too much oxygen over time, including lung irritation or damage (oxygen toxicity). In some people with advanced lung disease, high oxygen can dangerously reduce their drive to breathe.

Hyperbaric oxygen therapy can cause ear pain or injury from the pressure changes, temporary changes in vision, sinus discomfort, and, rarely, seizures or collapsed lung. The biggest hazard with any oxygen use is fire.

Unproven 'oxygen' products carry their own risks. Drinking or injecting hydrogen peroxide can be very dangerous and even fatal, and should never be done.

Dosing

There is no single 'dose' of oxygen that fits everyone. Medical oxygen is prescribed and adjusted by a healthcare provider based on your blood oxygen levels, your condition, and your symptoms. It is usually measured as a flow rate (liters per minute) or a percentage of oxygen, and often guided by a fingertip oxygen monitor (pulse oximeter) or blood tests.

Because the right amount is so individual, you should never change your oxygen flow or stop it on your own. Follow the exact instructions on your prescription and equipment, and check with your pharmacist or doctor if you have questions.

Over-the-counter 'oxygen' wellness products are not standardized and are not a substitute for prescribed medical oxygen.

References & further reading

The 2 sources that drive our Oxygen Therapy monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing.

  1. Oxygen Therapy — MedlinePlus (U.S. National Library of Medicine) Source
  2. Oxygen Therapy — Cleveland Clinic Source
Keep reading

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.

Pharmacist Counseling Corner

Oxygen Therapy: Common Questions

Does Oxygen Therapy interact with prescription medications?
We do not currently list any known drug interactions for Oxygen Therapy. This does not guarantee that none exist, so always confirm with your pharmacist before combining it with your medications.
How are Oxygen Therapy interactions rated?
Each interaction is graded major, moderate, or minor based on how clinically significant it is and the strength of the evidence behind it. Major interactions are the most serious and are best avoided, or used only under close professional supervision.
Is it safe to take Oxygen Therapy with my medications?
It depends on the specific medication. Some combinations are fine, while others call for monitoring, timing changes, or should be avoided. Check your exact drug above and confirm with your pharmacist or doctor before starting, stopping, or changing anything.
Where does this Oxygen Therapy interaction information come from?
Our interaction data is built on the Natural Medicines database — an evidence-graded reference for vitamins, herbs, and supplements — and is reviewed by licensed HelloPharmacist pharmacists, who may add clinical context.
Is Oxygen Therapy a supplement I can buy and use on my own?
No. Medical oxygen is a prescription treatment that must be used under a healthcare provider's guidance, because both too little and too much can cause harm. Store-bought 'oxygen' products are not the same thing and are not proven to improve health in people with normal oxygen levels.
Will breathing extra oxygen give me more energy or improve my workouts?
If your oxygen levels are already normal, there is no good evidence that breathing extra oxygen boosts energy or athletic performance. Canned oxygen and oxygenated water are marketed for this but are not proven to work.
Can too much oxygen be harmful?
Yes. Breathing very high levels of oxygen for too long can irritate or damage the lungs, and in some people with chronic lung disease it can dangerously slow their breathing. This is why oxygen should only be used at the level your doctor prescribes.
Is it safe to drink hydrogen peroxide or oxygenated water for health?
Drinking or injecting hydrogen peroxide can be extremely dangerous and even deadly, and should never be done. Oxygenated water is generally harmless but has no proven health benefit.

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

Where next
Supplement interaction checkerCheck any supplement or product against your medications Drug–drug interactionsCheck two or more of your medications against each other Browse medications A–ZEvery drug we’ve checked against herbs & supplements NDC & pricing lookupFind a drug’s NDCs, packaging and costs Ask a pharmacistFree, personal answer from our licensed team

Have a question about Oxygen Therapy?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist