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OHECON 0.25 %/10 % MEDICINAL COMPRESSED GAS

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This page is for general information. Consult a doctor for personal advice. Call emergency services if symptoms are severe.
About the medicine

How to use OHECON 0.25 %/10 % MEDICINAL COMPRESSED GAS

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This page provides general information and does not replace a doctor’s consultation. Always consult a doctor before taking any medication. Seek urgent medical care if symptoms are severe.

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Introduction

Package Leaflet: Information for the User

Ohecon 0.25%/ 10% Compressed Medical Gas

Carbon Monoxide (CO) / Helium (He)

Read this package leaflet carefully before starting to use this medicine, as it contains important information for you.

  • Keep this package leaflet, as you may need to read it again.
  • If you have any questions, ask your doctor or nurse.
  • If you experience side effects, consult your doctor, even if they are not listed in this package leaflet. See section 4.

Contents of the Package Leaflet

  1. What Ohecon is and what it is used for
  2. What you need to know before starting to use Ohecon
  3. How to administer
  4. Possible side effects
  5. Storage of Ohecon
  6. Package Contents and Additional Information

1. What Ohecon is and what it is used for

Ohecon is a medical gas for diagnostic use only for lung function. It is used during diagnostic tests of lung function: determination of diffusion capacity / transfer factor and lung volume.

The medicinal gas Ohecon can only be used in patients who are able to perform the test, regardless of their age.

Doctor consultation

Not sure if this medicine is right for you?

Discuss your symptoms and treatment with a doctor online.

2. What you need to know before starting to use Ohecon

Do not use this medicinal gas:

Unless your doctor has asked you to undergo respiratory function tests.

Warnings and Precautions

Consult your doctor before starting to use Ohecon.

If you have a history of coronary arteriopathy, you may be at risk of myocardial ischemia caused by carbon monoxide, as indicated by changes in the ECG (ST segment descent).

Children

This medicinal gas should be used with caution in children due to the lack of data on the systemic toxicity of this mixture.

Pregnancy and Breastfeeding

If you are pregnant or breastfeeding, think you may be pregnant, or plan to become pregnant, consult your doctor before using this medicinal gas.

Driving and Using Machines

The use of this medicinal gas during respiratory function tests does not affect the ability to drive and use machines.

3. How to Administer Ohecon

Ohecon can only be used for respiratory function tests by inhalation and exactly as your doctor or the medical staff responsible has indicated. If you have any doubts, consult your doctor or the medical staff attending you.

Only the doctor or the medical staff responsible should decide the duration of the respiratory function test and the frequency of repetition of the test.

Safety Instructions

Smoking or lighting open flames is not allowed in the room where the medicinal gas is being used.

If you have any doubts about the use of this medicine, consult your doctor or the medical staff attending you.

Medicine questions

Started taking the medicine and have questions?

Discuss your symptoms and treatment with a doctor online.

4. Possible Side Effects

During inhalation of this medicinal gas during respiratory function tests, very unlikely side effects such as dizziness, chest pain, and disorientation may occur. If any symptoms of this nature occur during the use of the medicinal gas, inhalation should be suspended immediately and medical treatment should be administered.

Reporting Side Effects

If you experience any side effects, consult your doctor, pharmacist, or nurse, even if they are possible side effects not listed in this package leaflet. You can also report them directly through the Spanish Pharmacovigilance System for Human Use Medicines: www.notificaRAM.es. By reporting side effects, you can contribute to providing more information on the safety of this medicine.

5. Storage of Ohecon

Keep this medicinal gas out of the sight and reach of children.

Do not use this medicinal gas after the expiration date shown on the gas cylinder after CAD.

Do not dispose of the container of this medicinal gas; return it to the supplier.

These measures will help protect the environment.

Store below 50°C.

All regulations regarding the handling of pressure vessels must be followed.

Store in the original gas cylinder. Do not transfer the contents of the original gas cylinder to another gas cylinder.

Store gas cylinders indoors, in well-ventilated rooms or outdoors under cover and protected from adverse weather conditions.

Protect gas cylinders from impacts, falls, oxidizing and flammable materials, humidity, heat sources, or ignition.

Different types of medicinal gas should be separated from each other. Full and empty gas cylinders should be stored separately.

6. Package Contents and Additional Information

Composition of Ohecon

  • The active ingredients are carbon monoxide and helium.
  • The other components are nitrogen and oxygen.

Appearance of the Product and Package Contents

Ohecon is a colorless, odorless, and tasteless compressed medical gas.

10-liter aluminum gas cylinder (identified with a bright green tip and white body) filled to a pressure of 150 bar, equipped with a residual pressure valve made of copper with a specific outlet connection.

Marketing Authorization Holder and Manufacturer

Marketing Authorization Holder

Messer Ibérica de Gases S.A.U.

Autovía Tarragona-Salou, km. 3.8

E-43480, Vilaseca (Tarragona)

Spain

Manufacturer

Messer Austria GmbH

Industriestraße 5

2352 Gumpoldskirchen

Austria

This medicine is authorized in the EEA member states under the following names:

PneumoXON: Netherlands, Austria, Germany, and Romania

Ohecon: Czech Republic, Poland, and Spain

Date of the Last Revision of this Package Leaflet:

May 2023

Detailed information on this medicine is available on the website of the Spanish Agency for Medicines and Health Products (AEMPS) (http://www.aemps.gob.es/

Online doctors for OHECON 0.25 %/10 % MEDICINAL COMPRESSED GAS

Discuss questions about OHECON 0.25 %/10 % MEDICINAL COMPRESSED GAS, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

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Tarek Agami

General medicine 11 years exp.

Dr. Tarek Agami is a general practitioner registered in both Portugal and Israel, with broad experience in family and preventive medicine. He offers online consultations for adults and children, providing personalised support for primary care needs, chronic disease management, and everyday health concerns.

Dr. Agami received clinical training and worked in leading medical institutions in Israel (Kaplan Medical Center, Barzilai Medical Center, Wolfson Medical Center) and Portugal (European Healthcare City, Viscura Internacional, Hospital Dr. José Maria Grande, Hospital Vila Franca de Xira). His approach combines international medical standards with individualised attention to each patient.

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Dr. Agami provides medical support for patients using GLP-1 medications (such as Ozempic or Mounjaro) as part of a weight loss strategy. He offers individualised treatment planning, regular follow-up, dose adjustment, and advice on combining medication with sustainable lifestyle changes. Consultations follow the medical standards accepted in Portugal and Israel.

Dr. Agami is committed to evidence-based, patient-centred care, ensuring that each person receives trusted medical support tailored to their health goals.

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Nuno Tavares Lopes

Family medicine 18 years exp.

Dr. Nuno Tavares Lopes is a licensed physician in Portugal with 17 years of experience in emergency medicine, family and general practice, and public health. He is the Director of Medical and Public Health Services at an international healthcare network and serves as an external consultant for the WHO and ECDC.

  • Emergency care: infections, fever, chest/abdominal pain, minor injuries, paediatric emergencies
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Dr. Nuno Tavares Lopes provides medical support for patients using GLP-1 medications (Mounjaro, Wegovy, Ozempic, Rybelsus) as part of a weight loss strategy. He offers individualised treatment planning, regular follow-up, dose adjustment, and advice on combining medication with sustainable lifestyle changes. Consultations follow the medical standards accepted in Europe.

Dr. Lopes also provides interpretation of medical tests, follow-up care for complex patients, and multilingual support. Whether for urgent concerns or long-term care, he helps patients act with clarity and confidence.

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Anastasiia Hladkykh

Psychiatry 15 years exp.

Dr Anastasiia Hladkykh is a physician-psychotherapist and psychologist with over 14 years of experience working with individuals struggling with various types of addictions and their families. She provides online consultations for adults, combining medical knowledge with deep psychological support and practical tools.

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Experience and background:
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Anastasiia Shalko

Family medicine 13 years exp.

Dr. Anastasiia Shalko is a general practitioner with a background in both paediatrics and general medicine. She graduated from Bogomolets National Medical University in Kyiv and completed her paediatric internship at the P.L. Shupyk National Medical Academy of Postgraduate Education. After working as a paediatrician in Kyiv, she relocated to Spain, where she has been practising general medicine since 2015, providing care for both adults and children.

Her work focuses on urgent, short-term medical concerns – situations where patients need quick guidance, symptom assessment and clear next steps. She helps people understand whether their symptoms require in-person evaluation, home management or a change in treatment. Common reasons for booking an online consultation include:

  • acute respiratory symptoms (cough, sore throat, runny nose, fever)
  • viral illnesses such as colds and seasonal infections
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Tomasz Grzelewski

Dermatology 21 years exp.

Dr Tomasz Grzelewski is an MD, PhD specialist in allergy, paediatrics, general practice and sports medicine, with a clinical focus on dermatology, endocrinology, allergology and sports-related health. He has more than 20 years of clinical experience and completed his medical training at the Medical University of Łódź, where he defended his PhD thesis with distinction. His doctoral research was recognised by the Polish Society of Allergology for its innovative contribution to the field. Throughout his career, he has gained extensive expertise in diagnosing and managing a wide range of allergic and paediatric conditions, including modern allergen desensitisation techniques.

For five years, Dr Grzelewski served as the Head of two paediatric departments in Poland, managing complex clinical cases and leading multidisciplinary teams. He also worked in medical centres in the United Kingdom, gaining experience across both primary care and specialist environments. With over a decade of telemedicine experience, he has provided online consultations across Europe and is valued for his clear, structured and evidence-based medical guidance.

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In addition to his background in allergology and paediatrics, he completed dermatology studies through the Cambridge Education Group (Royal College of Physicians of Ireland) and a Clinical Endocrinology course at Harvard Medical School. This advanced training enhances his ability to manage skin manifestations of allergies, atopic conditions, urticaria, endocrine-related symptoms and complex immunological reactions.

Patients commonly seek his care for:

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Dr Tomasz Grzelewski is known for his clear communication style, structured medical approach and ability to explain treatment options in a concise and accessible way. His multidisciplinary background across allergy, paediatrics, dermatology and endocrinology allows him to provide safe, up-to-date and comprehensive care for patients of all ages.
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Frequently Asked Questions

Is a prescription required for OHECON 0.25 %/10 % MEDICINAL COMPRESSED GAS?
OHECON 0.25 %/10 % MEDICINAL COMPRESSED GAS requires a prescription in Spain. You can check with a doctor online whether this medicine may be appropriate for your situation.
Who manufactures OHECON 0.25 %/10 % MEDICINAL COMPRESSED GAS?
OHECON 0.25 %/10 % MEDICINAL COMPRESSED GAS is manufactured by Messer Iberica De Gases, S.A.U.. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of OHECON 0.25 %/10 % MEDICINAL COMPRESSED GAS online?
Doctors such as Family doctors, Psychiatrists, Dermatologists, Cardiologists, Endocrinologists, Gastroenterologists, Pulmonologists, Nephrologists, Rheumatologists, Hematologists, Infectious disease physicians, Allergists, Geriatricians, Paediatricians, Oncologists may assess whether OHECON 0.25 %/10 % MEDICINAL COMPRESSED GAS is appropriate, depending on your situation and local regulations. You can book an online consultation to discuss your symptoms and possible next steps.
What are the alternatives to OHECON 0.25 %/10 % MEDICINAL COMPRESSED GAS?
Other medicines with the same active substance () include MEDICAL AIR COMPRESSED GAS LINDE 200 BAR, COMPRESSED MEDICAL GAS, SYNTHETIC MEDICAL AIR METAL CARBIDES, 22% V/V, MEDICAL GAS, COMPRESSED, SYNTHETIC MEDICAL AIR NIPPON GASES 200 BAR, COMPRESSED MEDICAL GAS. These may have different brand names or formulations but contain the same therapeutic ingredient. Always consult a doctor before switching or starting a new medicine.
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