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15L Oxygen Can Replacement for Mask and Tube

15L Oxygen Can Replacement for Mask and Tube

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  • ✔️ Delivers ~99% concentrated oxygen for rapid breathlessness relief
  • ✔️ Provides approximately 50–60 inhalation bursts per canister
  • ✔️ Lightweight and portable — ideal for travel and high altitude
  • ✔️ Includes replacement mask and tube for hygienic, ready-to-use convenience
  • ✔️ Suitable for adults with mild, exertion-related or altitude breathlessness

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What Is a Portable Oxygen Can and How Can It Help You?

 

Feeling short of breath can be unsettling — whether it happens after physical exertion, at altitude, or during recovery from illness. The portable oxygen can from Clear O2 is a 15-litre supplemental oxygen canister designed for short-term, on-the-go use. It comes complete with a replacement mask and tube, making it straightforward to use whenever you need a quick boost of oxygen. At £21.49, it offers an accessible option for adults who experience occasional, mild breathlessness outside of a clinical setting. According to the NHS, breathlessness can have many causes, and while mild cases may be managed with simple measures, persistent or severe breathlessness always warrants medical assessment.

This product is not a substitute for medically prescribed oxygen therapy. If you have a diagnosed respiratory condition, please speak to your GP before use. For those managing general wellness or occasional breathlessness from exertion or travel, this canister can be a practical addition to your health toolkit — much like keeping first aid essentials close to hand.

 

How Does the Clear O2 Oxygen Can Work?

 

The canister contains oxygen at a concentration of approximately 99%, significantly higher than the roughly 21% found in normal ambient air. When you press the valve and inhale through the mask, you receive a concentrated burst of oxygen directly into your airways. This temporarily raises the partial pressure of oxygen in your lungs, which can help ease the sensation of breathlessness and support your body's natural recovery processes after exertion.

  • Oxygen is delivered via a fitted mask and tube for a controlled, comfortable inhalation
  • Each short burst (1–3 seconds) provides a measurable increase in inhaled oxygen concentration
  • The effect is rapid — most users notice relief within a few breaths
  • The 15-litre capacity provides multiple uses from a single canister

 

Who Should Consider Using This Oxygen Canister?

 

This product is intended for adults who experience mild, temporary breathlessness. It is not designed for continuous or long-term oxygen therapy, which must always be prescribed and supervised by a healthcare professional. The NHS notes that supplemental oxygen is used in a variety of clinical and non-clinical contexts, but appropriate use depends heavily on the individual's underlying health status.

This canister may be suitable for:

  • Adults experiencing breathlessness after physical exertion or exercise
  • Travellers at high altitude where ambient oxygen levels are lower
  • Individuals recovering from mild illness who feel fatigued or short of breath
  • Those wanting a portable, convenient option for occasional supplemental oxygen use

 

How Does the Clear O2 15L Can Compare to Other Oxygen Options?

 

Feature Clear O2 15L Portable Can Home Oxygen Concentrator (Prescribed)
Requires prescription No — OTC purchase Yes — NHS or private prescription
Portability Highly portable, lightweight Limited — mains-powered unit
Intended use Short-term, occasional relief Long-term, continuous therapy
Oxygen concentration ~99% 87–95% (flow-dependent)

 

How Should You Store the Clear O2 Oxygen Can?

 

Proper storage is essential for both safety and product longevity. The portable oxygen can should be kept upright in a cool, dry location, away from direct sunlight, open flames, and heat sources. Oxygen supports combustion, so it must never be stored near anything flammable. Keep the canister out of reach of children at all times. Do not puncture, incinerate, or attempt to refill the canister. If you are also managing other health conditions and keeping various health products at home — such as those from our vitamins and supplements range — ensure all products are stored safely and separately according to their individual instructions.

This product is a medicine. Speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

Clear O2 15L Oxygen Can Replacement for Mask and Tube specifications
Treatment category Supplemental oxygen / respiratory support
Mechanism of action Delivers concentrated oxygen via inhalation to temporarily increase oxygen availability in the lungs
Effective for Mild, temporary breathlessness; exertion; altitude; recovery
Suitable for Adults aged 18 and over
Active ingredient Oxygen (O2) approximately 99%
Pack size 15 litres
UK classification General Sale / OTC
Preparation Pressurised gas canister
Route of administration Inhalation via mask and tube

Specifications of Clear O2 15L Oxygen Can Replacement for Mask and Tube

 

What Is the Clear O2 Oxygen Can and What Is It Used For?

 

The Clear O2 15L Oxygen Can is an over-the-counter supplemental oxygen product designed for short-term inhalation use in adults. It delivers a high-concentration stream of oxygen (approximately 99%) through a mask and tube to help relieve mild, temporary breathlessness. It is used by people who feel short of breath after physical activity, at high altitude, or during recovery from illness. It is not a medical device for treating diagnosed respiratory conditions such as COPD, asthma, or heart failure — those conditions require medically supervised oxygen therapy prescribed by a GP or specialist.

The NHS explains that breathlessness can arise from a wide range of causes, from exertion and anxiety to underlying lung or heart conditions. This product addresses only the mildest, most transient end of that spectrum. If your breathlessness is new, worsening, or accompanied by chest pain, dizziness, or coughing up blood, seek urgent medical attention.

 

What Do You Need to Know Before Using the Clear O2 Oxygen Can?

 

Before using this product, read the following carefully. Certain individuals should not use supplemental oxygen canisters without medical supervision.

Do not use this product if you:

  • Have been diagnosed with COPD, emphysema, or chronic hypercapnia (raised CO2 levels) — high-flow oxygen can suppress your breathing drive
  • Are under 12 years of age
  • Have a known allergy or sensitivity to any component of the product
  • Are using the canister near open flames, lit cigarettes, or heat sources — oxygen is highly flammable
  • Are pregnant or breastfeeding, unless advised by a healthcare professional

Drug interactions:

  • No significant pharmacological drug interactions are known for inhaled supplemental oxygen at OTC concentrations
  • If you are on prescribed respiratory medications (e.g. bronchodilators, corticosteroids), consult your GP or pharmacist before use

 

How Should You Use the Clear O2 Oxygen Can?

 

Using this canister correctly ensures you get the most benefit while staying safe. Follow these steps carefully each time you use it.

  1. Remove the protective cap from the canister nozzle
  2. Attach the tube securely to the nozzle outlet
  3. Connect the mask to the other end of the tube
  4. Place the mask over your nose and mouth, ensuring a comfortable seal
  5. Press the valve button to release oxygen and inhale slowly and steadily
  6. Release the valve between breaths — do not hold it open continuously
  7. Use for short bursts of 1–3 seconds per inhalation as needed
  8. After use, replace the cap and store the canister upright in a cool, dry place
Indication Age Group Dose Frequency
Mild breathlessness / exertion Adults 18+ 1–3 second bursts as needed Intermittent; not continuous
Altitude-related breathlessness Adults 18+ 1–3 second bursts as needed As required; limit total daily use
Post-exertion recovery Adults 18+ Short inhalation bursts Occasional use only

If you are also managing symptoms such as a cough or congestion alongside breathlessness, you may find relevant products in our cold and flu range helpful.

 

What Are the Possible Side Effects of the Clear O2 Oxygen Can?

 

When used as directed, side effects from this product are uncommon. However, as with any inhaled product, some people may notice mild effects, particularly if the canister is used more frequently than recommended.

Common side effects:

  • Mild dryness of the mouth or throat
  • Slight dizziness if used excessively or too rapidly
  • Mild headache following overuse

Less common side effects:

  • Nasal dryness or irritation (particularly with prolonged use)
  • Nausea in sensitive individuals
  • Feeling of tightness in the chest if the mask seal is too tight

Oxygen toxicity is a serious concern with prolonged, high-flow oxygen use in clinical settings, but is extremely unlikely with the short, intermittent bursts provided by this OTC canister. If you experience worsening breathlessness, chest pain, or confusion at any point, stop use immediately and seek emergency medical help.

 

How Should You Store the Clear O2 Oxygen Can?

 

  • Store upright in a cool, dry place at room temperature
  • Keep away from direct sunlight, radiators, and heat sources
  • Never store near open flames, lit candles, or smoking materials
  • Keep out of reach of children and pets
  • Do not puncture, crush, or attempt to refill the canister
  • Do not dispose of in household fire — take to an appropriate recycling or disposal point
  • Check the expiry date before each use and do not use beyond it

If you are building a home health kit, you might also want to explore our electrical health and diagnostic range, which includes pulse oximeters useful for monitoring your blood oxygen levels at home.

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Frequently Asked Questions

Where can I buy a portable oxygen can online in the UK?

You can buy the Clear O2 15L portable oxygen can directly from Cured Pharmacy online for £21.49, with fast UK delivery and no prescription required. It is an over-the-counter product available to adults aged 18 and over. Simply add it to your basket and check out securely through our GPhC-registered pharmacy.

How does a portable oxygen can work in the body?

When you inhale from the canister, you receive a concentrated burst of approximately 99% oxygen, compared to the roughly 21% found in normal air. This temporarily raises the partial pressure of oxygen in your lungs, making more oxygen available for your bloodstream and tissues. The effect is rapid and can help ease the sensation of breathlessness within a few breaths.

How do I use the Clear O2 oxygen can step by step?

Using the canister is straightforward. Follow these steps:

  1. Attach the tube to the canister nozzle
  2. Connect the mask to the tube
  3. Place the mask over your nose and mouth
  4. Press the valve and inhale slowly for 1–3 seconds
  5. Release the valve between breaths

Never hold the valve open continuously, and always store the canister upright after use.

How many uses does a 15L oxygen can provide?

A 15-litre canister typically provides approximately 50–60 short inhalation bursts of around 1–2 seconds each, though this varies depending on how long each burst lasts. It is designed for intermittent, short-term use rather than continuous oxygen therapy. If you find you are using it very frequently, speak to your GP about whether you need a formal assessment of your breathing.

What is the best time to use a portable oxygen can?

Use the canister as soon as you notice mild breathlessness — for example, immediately after strenuous exercise, upon arriving at high altitude, or during recovery from illness. There is no fixed schedule; it is an as-needed product. Avoid using it as a preventative measure before any activity without first speaking to a healthcare professional.

Who is eligible to use the Clear O2 oxygen can?

This product is suitable for adults aged 18 and over who experience mild, temporary breathlessness from exertion, altitude, or fatigue. It is not suitable for children under 12, or for people with diagnosed respiratory conditions such as COPD or chronic hypercapnia, without medical supervision. If you are unsure whether this product is right for you, speak to your pharmacist before purchasing.

Can I use the oxygen can if I have asthma or COPD?

If you have asthma, COPD, or any other diagnosed respiratory condition, you must consult your GP or pharmacist before using any supplemental oxygen product. In people with COPD and chronic hypercapnia, high-concentration oxygen can dangerously suppress the breathing drive. The NHS recommends that oxygen therapy for these conditions is always medically supervised and prescribed.

Are there any side effects from using a portable oxygen can?

Side effects are uncommon when the canister is used as directed, but may include mild dryness of the mouth or throat, slight dizziness, or a mild headache if used excessively. Nasal dryness can occur with prolonged use. If you experience chest pain, worsening breathlessness, or confusion, stop use immediately and seek urgent medical attention.

How do I manage side effects from using an oxygen canister?

Most mild side effects, such as dry mouth or slight dizziness, resolve quickly once you stop using the canister. Staying well hydrated can help reduce throat and nasal dryness. If side effects persist or worsen, stop use and speak to your pharmacist or GP. You can also explore our ear, nose and throat range for products that may help with nasal dryness or irritation.

What are the alternatives to a portable oxygen can?

Alternatives include NHS-prescribed home oxygen concentrators for those with chronic respiratory conditions, or breathing exercises recommended by the NHS for managing mild breathlessness. For altitude-related breathlessness, acclimatisation strategies and, in some cases, medication such as acetazolamide (prescribed) may be appropriate. A portable oxygen can is best suited to occasional, short-term use only.

How long can you use a portable oxygen can for?

This product is intended for short-term, intermittent use only — not for continuous or long-term oxygen therapy. If you find yourself relying on it daily or multiple times a day, this is a sign that you should seek a medical assessment. Long-term oxygen needs must be managed through a GP referral and formal respiratory evaluation.

Is the Clear O2 oxygen can safe to use on a plane or at altitude?

The canister can be used at altitude to help relieve breathlessness caused by lower ambient oxygen levels, which the NHS describes as a common feature of altitude sickness. However, pressurised canisters may be subject to airline restrictions, so always check with your airline before travelling with this product. If you are travelling to high altitude, speak to your GP or a travel health clinic in advance.

What happens if I use the oxygen can too much?

Excessive use of supplemental oxygen in healthy individuals is unlikely to cause serious harm in the short term, but may lead to dizziness, headache, or nausea. In people with certain lung conditions, overuse can be dangerous. If you feel you are relying on the canister frequently, this is a signal to seek medical advice rather than continue self-managing with an OTC product.

What are the latest findings on supplemental oxygen for breathlessness?

Current NHS and clinical guidance confirms that supplemental oxygen is beneficial for people with documented low blood oxygen levels, but evidence for its use in people with normal oxygen saturation is more limited. For mild, exertion-related breathlessness in otherwise healthy adults, short-term use of a portable oxygen can may provide symptomatic relief. Monitoring your oxygen levels at home with a pulse oximeter — available in our electrical health and diagnostic range — can help you understand whether supplemental oxygen is genuinely needed.

Can I use the Clear O2 oxygen can during exercise or sport?

Some people use supplemental oxygen canisters during or immediately after intense exercise to support recovery, and this is a common use case for products like the Clear O2 can. However, there is limited clinical evidence that it meaningfully improves athletic performance in healthy individuals with normal oxygen saturation. It is best used for post-exercise recovery rather than during activity, and should not replace proper fitness training or medical management of any underlying condition.

How Should You Use the Clear O2 Oxygen Can?

Using the Clear O2 15L oxygen can correctly is straightforward, but it is important to follow each step carefully to ensure you inhale safely and get the most from each canister. Always read the product instructions included in the packaging before first use.

Never attempt to use the canister without the mask and tube attached. If the mask or tube becomes damaged, replace them before using the canister again.

What Is the Correct Dose of the Clear O2 Oxygen Can?

There is no fixed dose in the traditional sense, as this is an as-needed inhalation product. However, each inhalation should be kept to short bursts of 1–3 seconds, and you should not use the canister continuously or for prolonged periods in a single session. The table below provides general guidance based on common use cases.

When Is the Best Time to Use the Clear O2 Oxygen Can?

Use the canister as soon as you notice mild breathlessness — for example, immediately after strenuous physical activity, upon arriving at high altitude, or during a period of fatigue or recovery. There is no fixed time of day for use; this is an on-demand product. Avoid using it as a routine preventative measure before activity without first seeking advice from a healthcare professional.

If you are using it at altitude, begin use as soon as you notice symptoms such as light-headedness or shortness of breath, rather than waiting until symptoms become severe.

How Long Can You Use the Clear O2 Oxygen Can For?

This product is designed for short-term, intermittent use only. It is not intended to replace medically prescribed oxygen therapy or to be used on a continuous, daily basis. A single 15-litre canister provides approximately 50–60 short inhalation bursts, after which it should be disposed of responsibly and replaced if needed.

If you find that you are using supplemental oxygen frequently or that your breathlessness is not improving, this is a clear sign that you should seek a medical assessment. Persistent breathlessness may indicate an underlying condition that requires proper diagnosis and treatment.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

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What Are the Most Common Side Effects of the Clear O2 Oxygen Can?

When used as directed — in short, intermittent bursts — the Clear O2 oxygen can is generally well tolerated by most adults. Side effects are uncommon, but some people may notice mild effects, particularly if they use the canister more frequently than recommended or hold each inhalation for too long.

  • Mild dryness of the mouth or throat
  • Slight dizziness, particularly if used too rapidly
  • Mild headache following excessive use
  • Feeling of lightheadedness immediately after inhalation

What Are the Less Common Side Effects of the Clear O2 Oxygen Can?

Less commonly, some users may experience the following, particularly with prolonged or repeated use in a single session. These effects are more likely if the canister is used beyond its intended purpose.

  • Nasal dryness or irritation
  • Mild nausea in sensitive individuals
  • A feeling of tightness around the face if the mask is fitted too tightly
  • Temporary flushing or warmth in the face

What Are the Serious Side Effects of the Clear O2 Oxygen Can?

Serious side effects from short-term, OTC supplemental oxygen use are rare in otherwise healthy adults. However, in people with certain underlying conditions — particularly COPD with chronic hypercapnia — high-concentration oxygen can suppress the hypoxic drive to breathe, which is a medical emergency. Oxygen toxicity, while a recognised risk in clinical high-flow oxygen therapy, is extremely unlikely with the brief, intermittent use this product is designed for.

Seek emergency medical help immediately if you experience any of the following after use:

  • Worsening breathlessness or inability to catch your breath
  • Chest pain or tightness
  • Confusion or altered consciousness
  • Blue tinge to the lips or fingertips (cyanosis)

What Should You Do If You Experience Side Effects?

For mild side effects such as dry mouth or slight dizziness, simply stop using the canister and rest. Drinking water can help relieve throat and mouth dryness. Most mild effects resolve within a few minutes of stopping use. Do not continue using the canister if you feel unwell. If symptoms persist or you are concerned, contact your pharmacist or GP for advice before using the product again.

If you experience any serious symptoms as listed above, call 999 or go to your nearest A&E immediately. Do not attempt to self-manage serious respiratory symptoms with an OTC product.

Can the Clear O2 Oxygen Can Interact With Other Medicines?

No significant pharmacological drug interactions are known for inhaled supplemental oxygen at the concentrations delivered by this OTC canister. However, if you are taking prescribed respiratory medications — such as bronchodilators, corticosteroids, or any medicines for heart or lung conditions — you should speak to your GP or pharmacist before using this product. This is particularly important if your prescribed medicines affect your breathing pattern or respiratory drive.

If you are concerned about any side effects, contact your pharmacist or GP immediately.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

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Content last updated: 31 Mar 2025

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