Normobaric oxygen is oxygen breathed at normal sea level pressure, while hyperbaric oxygen therapy is near 100% oxygen in a chamber at 2 to 3 ATA. Pressure lifts plasma oxygen from about 1.5 to 6 mL per 100 mL of blood.
Mild HBOT runs at 1.3 to 1.5 ATA in a soft chamber on air or concentrator oxygen, while medical HBOT runs at 2.0 to 3.0 ATA on 100 percent oxygen, delivering about eight times the arterial oxygen.
One hyperbaric chamber session costs $80 to $300 at US clinics whose published prices Regenerated.com checked on October 1, 2026, and prepaid hospital HBOT visits cost $431 to $1,029.
A new soft-shell home hyperbaric chamber costs $4,495 to about $24,372, with a median listed price of $13,495 across 11 verified July 2026 listings. Personal hard-shell chambers have a median of $41,700, and used clinical monoplace units list from $49,500 to $128,625.
Ozone therapy and hyperbaric oxygen therapy (HBOT) work differently: HBOT dissolves extra oxygen into plasma under pressure, while ozone triggers an antioxidant response. HBOT has 14 FDA-cleared indications; ozone therapy and IV NAD+ have none.
The FDA has cleared hyperbaric oxygen therapy chambers for 13 conditions, while the UHMS approves 15 indications in 2026 after adding avascular necrosis. Stroke and soft home chambers appear on neither list.
HBOT for sports recovery speeds the clearance of muscle-damage markers but does not reduce soreness or improve performance, according to a 2025 meta-analysis of 10 randomized trials (299 subjects).
A hard shell hyperbaric chamber reaches 2.0 to 2.4 ATA on 100% oxygen and about 1,824 mmHg arterial oxygen, while a soft shell chamber reaches about 1.3 ATA on air and about 230 mmHg. The positive wound and neurological HBOT trials all used hard chambers.
