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Ozone therapy session at Ohen Group

Medical Ozone Generator

The Ohen 4.1

High Concentration Medical Ozone

Ohen has been specially designed to meet the need for high-quality medical ozone generators for health enhancement at home as well as for use by practitioners. We work closely with some of the most respected medical ozone specialists in the world. One of Ohen Group’s design engineers has received an international award from the European Editorial Office for medical ozone machines and developments.

Ohen 4.1 medical ozone machine
  • Ear insufflation

  • Inhalation through olive oil

  • Cupping skin surfaces and organs

  • Limb bagging

  • Vaginal insufflation

  • Rectal insufflation

  • Ozonating water

  • Disinfection and purification of air

A Full Package

The Ohen 4.1 comes with all accessories to administer

Every purchase also comes with:

  • Low flow pediatric regulator free with the purchase of an oxygen cylinder

  • Access to customer-only online resources

  • Access to priority support and healthcare practitioners

Ohen units carry a one-year full manufacturer's warranty and ongoing therapy support to the registered customer. We offer quotes in EUR, GBP, or ZAR, and units can be shipped with either EU or UK power adaptors.


Features of the Ohen 4.1

  • Low flow rates allow the Ohen unit to produce high ozone concentrations while using less oxygen than other ozone generators. This reduces the amount of refills needed if using an oxygen cylinder (one 3L cylinder lasts 3 months with regular use).

  • Ohen medical grade resistant materials are sourced from Italy and Germany with accessories sourced in local markets (see our going green initiatives).

  • The only one of its kind that can be used for both home and professional medical use.

  • Pre-calibrated output creating an easy to use interface without a need to understand how to provide the correct concentrations of ozone. The Ohen unit only provides the highest concentration. Simply set a treatment time and turn the Ohen unit on.

  • The Ohen 4.1 is accurately calibrated to produce high-grade medical ozone from medical oxygen.

  • The Ohen unit can be serviced and repaired, and replacement accessories are available to purchase.

  • Extremely safe to administer with or without knowledge of ozone.

The Ohen unit complies with all the major requirements of medical ozone generators which includes:

  • The oxygen source is high purity oxygen and not ambient air. Ambient air contains 21% oxygen and chemical toxins.

  • The output of the ozone generator is calibrated and measures in micrograms of ozone per milliliter of oxygen (µg/ml) and not the industrial standard of milligrams per hour (mg/h)

  • The machine should be within the accepted concentration of ozone produced that is viable for human use. Concentrations too weak will have no beneficial impact and concentrations too strong are harmful. 

  • The material used in manufacturing medical ozone machines must be of medical grade to produce high quality medical ozone (often other ozone machine manufacturers use industrial standard material). The materials must also be ozone resistant; many materials such as plastic and rubber polymers will perish quickly when exposed to medical grade ozone.

Units are registered to the paying customer who will receive the value added services. Reselling of Ohen units is prohibited; however, to transfer ownership to someone else, please contact us for assistance. High-value trade-ins are also available should you wish to upgrade.


Practitioners and Commercial Use:

Our Ohen units are carefully manufactured and calibrated in line with international standards and compliance. At Ohen Group, we take this very seriously due to the nature and uses of our products. However, at times, our customers misuse or are irresponsible with our units, such as when modified units, units tested to be inoperable, or damaged units are used against our technicians' advice. Unlawful actions or malpractice are reported to us at times, which may put our customers at risk. The 'our pick' practitioners listed on this website are recommended by us. You can contact us at any time to evaluate the efficacy of other practitioners and/ or their units before you visit them or check if their unit/s or company are blacklisted below. Any individual has the right to query a serial number with us (found on the underside of Ohen units), with the exception of requesting personal information.


As of 16/02/2024 the following units are blacklisted: s/n 18050305, both units used by Rene Lessing Aesthetics on patients, one Ohen 3.1 unit used by Dr. Francois van Wyk on patients, all units used by Mr. Izak Grové on patients. Please report any other issues or malpractice in writing to

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