Safety, contraindications and screening
Who should not use an ozone sauna?
Do not use an ozone sauna if you are pregnant or menstruating, have active bleeding, a platelet disorder such as haemophilia, thrombosis, active hyperthyroidism, any heart condition or a pacemaker, are an active alcoholic, or have had a heart attack or stroke in the last three months. This list is not complete: if you have any diagnosed condition, ask your doctor first.
The reasons fall into two groups. Ozone thins the blood, which rules out active bleeding from any site, menstruation, platelet disorders including haemophilia, and thrombosis, where a loosened clot could travel. Heat raises the heart rate, which rules out pregnancy (the mother’s raised heart rate raises the baby’s), active hyperthyroidism, any heart condition, active alcoholism, and recent heart attack or stroke, where we advise waiting three months. A pacemaker is listed separately: we prohibit ozone therapy because the far infrared might interfere with the device.
Several exclusions are timed rather than permanent:
- Menstruation. Wait until your period has finished, then book as normal.
- Two to three months after major surgery.
- Four days after a chemotherapy session, and tell the treating doctor.
- Eight hours after your last alcoholic drink.
- One to two hours either side of a session for vitamin C and supplements.
Medication. If you take any medication, ask your doctor or pharmacist whether to time your session around it. Never skip, delay or move a prescribed dose to fit a session.
This is not the complete list. The summary above is not a complete medical contraindication list. If you have a diagnosed condition that does not appear on it, that silence is not clearance — ask your doctor. Be open with the person running your session about your history and current medication; they can only choose safe settings from what you tell them.