110L Oxygen Can Replacement

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

If you've ever felt breathless after intense exercise, struggled at high altitude, or simply wanted a quick pick-me-up during a long day, you'll understand why supplemental oxygen has become increasingly popular outside of clinical settings. The portable oxygen can from Clear O2 contains 110 litres of concentrated oxygen, making it one of the larger-volume options available for personal use in the UK. At £83.49, it's designed as a replacement canister for existing Clear O2 mask systems, so you can keep using your equipment without interruption. Whether you're a weekend hiker, a competitive athlete, or someone managing everyday fatigue, having a reliable oxygen source to hand can make a real difference.

Supplemental oxygen in canister form is not a medical treatment for diagnosed respiratory conditions — it's a wellness and recovery aid. That said, it's worth understanding exactly what you're inhaling and why it might help. Atmospheric air contains roughly 21% oxygen. These canisters deliver a significantly higher concentration, which means each breath you take from the mask delivers more oxygen to your lungs than normal air would. If you're also browsing our vitamins and supplements range for energy support, pairing those with appropriate recovery tools like this canister could form part of a broader wellness routine.

How Does the Clear O2 110L Oxygen Can Work?

The mechanism is straightforward. When you press the valve on the canister, pressurised oxygen is released through the attached mask. You inhale this concentrated oxygen, which passes through your airways into the alveoli — the tiny air sacs in your lungs — where gas exchange occurs. From there, oxygen enters your bloodstream and is carried to your muscles, brain, and organs.

• Press the valve to release a controlled burst of oxygen into the mask.
• Breathe in slowly and steadily through the mask for 1–3 seconds per inhalation.
• Oxygen travels through the airways to the alveoli in the lungs.
• Gas exchange occurs: oxygen enters the blood, carbon dioxide is expelled.
• Oxygenated blood is circulated to muscles and organs, supporting recovery.

Who Should Consider Using This Oxygen Canister?

This product is aimed at healthy adults who want supplemental oxygen for non-medical purposes. It is not intended for people with diagnosed respiratory conditions such as COPD or asthma who require prescribed oxygen therapy — those individuals should speak to their GP or respiratory team. For everyone else, there are several situations where this canister may be genuinely useful.

• Athletes and gym-goers seeking faster post-exercise recovery.
• Hikers, climbers, or travellers visiting high-altitude destinations.
• People experiencing general fatigue or low energy during demanding days.
• Individuals who already own a Clear O2 mask system and need a replacement canister.

How Does the Clear O2 110L Can Compare to Smaller Oxygen Canisters?

How Should You Store and Handle This Oxygen Canister Safely?

Oxygen is not flammable itself, but it strongly supports combustion — meaning it can cause other materials to ignite or burn more intensely. Always store your portable oxygen can upright in a cool, dry location, well away from heat sources, open flames, and direct sunlight. Do not puncture, crush, or incinerate the canister even when empty. Keep it out of reach of children at all times.

If you're travelling with this canister, check airline and transport regulations before packing it. Many airlines restrict pressurised canisters in hold or cabin luggage. For those managing broader health needs alongside their travel plans, our travel health range includes additional products that may be useful before and during your trip.

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.

What Is the Clear O2 110L Oxygen Can Replacement and What Is It Used For?

The Clear O2 110L Oxygen Can Replacement is a pressurised canister containing high-concentration oxygen for inhalation. It is designed specifically as a refill for the Clear O2 mask system and is intended for non-medical, supplemental use. People use it to support recovery after physical exertion, to help with acclimatisation at altitude, and to manage feelings of fatigue or low energy. It is not a treatment for any diagnosed medical condition and should not be used as a substitute for prescribed oxygen therapy.

Oxygen makes up approximately 21% of the air we breathe. When you inhale from this canister, you receive a much higher concentration, which temporarily increases the amount of oxygen available to your lungs and bloodstream. This can help your body recover more quickly after demanding activity. It's worth noting that the NHS provides oxygen therapy for clinical conditions — this product sits firmly in the wellness category and is not equivalent to that.

What Do You Need to Know Before Using the Clear O2 110L Oxygen Can?

Before using this canister, read the following carefully. Whilst supplemental oxygen in canister form is generally considered safe for healthy adults at recommended use levels, there are important contraindications and precautions to be aware of.

Do not use this product if you:

• Have been diagnosed with COPD, hypercapnic respiratory failure, or any condition where supplemental oxygen is contraindicated without medical supervision.
• Are under 18 years of age without medical guidance.
• Are pregnant or breastfeeding — consult your GP before use.
• Have a known sensitivity or adverse reaction to high-concentration oxygen.

Drug and therapy interactions:

• No known interactions with oral medicines at recreational inhalation doses.
• If you use prescribed inhaled therapies (e.g. bronchodilators), speak to your pharmacist before combining with supplemental oxygen.
• Do not use alongside smoking or near any open flame — oxygen accelerates combustion significantly.

How Should You Use the Clear O2 110L Oxygen Can?

Always use this canister with the compatible Clear O2 mask. Do not attempt to use it with non-compatible equipment, as this may result in an uncontrolled release of oxygen. Follow these steps carefully each time you use it.

1. Ensure the canister is stored upright and at room temperature before use.
2. Attach the Clear O2 mask securely to the canister valve — you should hear a click when correctly fitted.
3. Hold the canister upright at all times during use.
4. Place the mask over your nose and mouth, ensuring a comfortable seal.
5. Press the valve gently to release oxygen and inhale slowly for 1–3 seconds.
6. Exhale normally, then repeat as needed — typically 3–5 breaths per session.
7. Release the valve fully between breaths to conserve canister volume.

If you are also managing respiratory symptoms such as a blocked nose or throat irritation, our ear, nose and throat range may offer complementary support.

What Are the Possible Side Effects of the Clear O2 110L Oxygen Can?

Side effects from short-term, recreational inhalation of supplemental oxygen are uncommon when the product is used as directed. However, you should be aware of the following.

Common side effects (may affect some users):

• Dry mouth or throat after use.
• Mild dizziness, particularly if you inhale too quickly or too deeply.
• Temporary lightheadedness — usually resolves within a few minutes.

Less common side effects:

• Headache following excessive use.
• Nausea if used immediately after intense physical activity.
• Throat irritation with prolonged or repeated sessions.

If you experience chest tightness, difficulty breathing, or any unusual symptoms after use, stop immediately and seek medical advice. Oxygen toxicity is a risk associated with prolonged high-concentration oxygen exposure in clinical settings, but is not expected at the short-duration, recreational doses this product is designed for.

How Should You Store the Clear O2 110L Oxygen Can?

• Store upright in a cool, dry place — ideally between 5°C and 25°C.
• Keep away from direct sunlight, radiators, and all heat sources.
• Never store near open flames, sparks, or smoking areas.
• Keep out of reach of children and pets.
• Do not puncture, crush, or incinerate — even when the canister appears empty.
• Check the valve and seal before each use; do not use if damaged.
• Dispose of responsibly in line with your local council's guidelines for pressurised containers.

For those managing other health conditions alongside their wellness routine, our pain relief collection includes a range of products that may complement your recovery plan.