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Carbon Dioxide 5%/ Oxygen Medical Gas Mixture – patient leaflet, side effects, dosage

Text from the MHRA, as of · About this document

Medicine strength:
5%
Contains active substance:

Patient leaflet - Carbon Dioxide 5%/ Oxygen Medical Gas Mixture

1. WHAT IS 5% CARBON DIOXIDE/ OXYGEN MEDICAL GAS MIXTURE AND WHAT IS IT USED FOR

5% Carbon Dioxide/Oxygen Medical Gas Mixture is a medicinal gas mixture, supplied in cylinders filled to a high pressure.

5% Carbon Dioxide/Oxygen Medical Gas Mixture is used to stimulate breathing following a period of absent or reduced breathing.

2. THINGS TO CONSIDER BEFORE USE

5% Carbon Dioxide/Oxygen Medical Gas Mixture is only given to you in a hospital or clinic under the supervision of a healthcare professional. Ensure that your healthcare professional is aware of any medical conditions that you may have.

Take special care with 5% Carbon Dioxide/ Oxygen Medical Gas Mixture if:

  • you have a chronic lung disease such as

    bronchitis.

  • you are taking other drugs that affect your

    breathing.

  • it is taken with anaesthetic agents, as using

    these together can affect the normal rhythms of the heart.

  • you have accidentally taken Paraquat (a

    type of weed killer), advise your healthcare professional before using this medicinal gas mixture, as there is a possibility of toxic effects to the lungs

Taking other medicines

5% Carbon Dioxide/Oxygen Medical Gas Mixture should not be used with adrenaline or similar drugs.

5% Carbon Dioxide/Oxygen Medical Gas mixture can affect other medicines in the body, including those taken for treating high blood pressure and muscle relaxants.

If you have been taking or prescribed Bleomycin (to treat cancer), Amiodarone (to treat an irregular heartbeat) or Nitrofurantoin and similar antibiotics (to treat infection), advise your healthcare professional before using this medicinal gas mixture, as there is a possibility of toxic effects to the lungs.

Tell your healthcare professional if you are taking or have recently taken any other medicines, including medicines obtained without a prescription.

Pregnancy and breast feeding

5% Carbon Dioxide/Oxygen Medical Gas Mixture will not affect you or your baby if used during pregnancy or whilst breast-feeding.

Driving and using machines

You may drive and use machines after using 5% Carbon Dioxide/Oxygen Medical Gas Mixture providing that your healthcare professional considers that you are both fit and capable.

3. HOW TO USE 5% CARBON DIOXIDE/ OXYGEN MEDICAL GAS MIXTURE

Instructions for use

Your healthcare professional will ensure that your 5% Carbon Dioxide/Oxygen Medical Gas Mixture supply is suitable for your use and that the equipment has been set up correctly so that you receive the right amount of gas.

When you are given your 5% Carbon Dioxide/ Oxygen Medical Gas Mixture it will be supplied via a facemask.

If you have any further questions on how this product is used, ask your healthcare professional.

4. POSSIBLE SIDE EFFECTS

Like all medicines 5% Carbon Dioxide/Oxygen Medical Gas Mixture may cause side effects although not everybody will get them.

The side effects which may occur are:

  • sweating
  • feeling sick
  • headache

Reporting of side effects

If you experience any of these side effects, or if you notice any side effects not listed in this leaflet, contact your healthcare professional immediately. You can also report side effects directly to the Medicines and Healthcare Products Regulatory Agency (MHRA) via the Yellow Card Scheme www. mhra.gov.uk/yellowcard and to BOC Healthcare. By reporting side effects you can help provide more information on the safety of this medicine.

5. HOW TO STORE 5% CARBON DIOXIDE/ OXYGEN MEDICAL GAS MIXTURE CYLINDERS

Expiry date

5% Carbon Dioxide/Oxygen Medical Gas Mixture should not be used after the expiry date stated on the batch label on the cylinder.

Product should be used in strict rotation so that cylinders with the earliest expiry date are used first.

Cylinder storage

Cylinders should be securely stored, in a well ventilated, dry and clean area, away from oils, greases, flammable materials and sources of extreme temperature.

The healthcare professional in the hospital or clinic will be responsible for making sure the cylinders are stored correctly.

DO NOT SMOKE or have a naked flame near your 5% Carbon Dioxide/Oxygen gas cylinder. The oxygen will make a flame burn much more violently.

NEVER use oil based moisturising creams with your cylinder equipment.

6. FURTHER INFORMATION

What 5% Carbon Dioxide/ Oxygen Medical Gas Mixture contains

Your cylinder contains 5% Medical Carbon Dioxide and 95% Medical Oxygen.

There are no other ingredients.

5% Carbon Dioxide/Oxygen Medical Gas Mixture Cylinders

5% Carbon Dioxide/Oxygen Medical Gas Mixture is supplied in the following size cylinders:

Cylinder

Cylinder

Contents

Cylinder Size

Cylinder Contents

(Litres) (Litres)

F 1360 J 6800 AV 1500 L 7200 G 3400

The shoulder of the cylinder is colour coded grey and white. The body is colour coded black.

Shoulder of cylinder viewed from above

Body of cylinder viewed from the side

All cylinders require separate pressure regulators to be fitted to the cylinder valves before use.

Marketing Authorisation Holder and Manufacturer BOC Ltd

Forge

43 Church Street West Woking

Surrey

GU21 6HT

Tel 0800 111333 This leaflet was last approved in 05/2022

Effective / Last Review Date: 12 Sep 2016 / Doc No / Version / Status: REG-22738 / 1 / Released

About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PL 00735/5010

MHRA data as of 13 October 2026

Found a mistake? Tell us on the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Facts about Carbon Dioxide 5%/ Oxygen Medical Gas Mixture

Active substance Oxygen
Strength 5%
Marketing authorisation PL 00735/5010 (first authorised 2 November 2005)
Marketing authorisation holder BOC Ltd

Sources: the MHRA product information (products.mhra.gov.uk). Contains public sector information licensed under the Open Government Licence v3.0.