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In Full Support of the FDA., Hyperbaric Oxygen Therapy for indications other than the UHMS-approved indications is considered Off Label. The content and information provided within this site are for informational and educational purposes only. Consult a doctor before pursuing any form of medical treatment, including Hyperbaric Oxygen Therapy. The information provided on this site is not to be considered Medical Advice. Please consult with your Treating Medical Physician.

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A Successful Hyperbaric Oxygen Therapy Treatment: Length of Time and Number of Sessions

Updated: Nov 3

Hyperbaric Oxygen Therapy is used to treat a myriad of ailments. The nature of the ailment and the type of treatment will alter the effects of HBOT as well. The effects also vary whether you are considering the long-term or the short-term. In this post, we cover everything you need to know regarding the effects of HBOT, the optimal therapy length, and the possible side effects of Hyperbaric therapy last. If you are interested in undergoing treatment yourself, give us a call at Oxygen Health Spa.

The length of time in a typical hyperbaric oxygen therapy session varies between 45 min to 2 hours, and the standard HBOT session at Oxygen Health Spa lasts one hour. The nature of the injury and/or ailment will alter the duration required to feel the optimal effects of a hyperbaric chamber. "Depending on the protocol, the estimated duration of a session varies from 1.5 to 2 h and may be performed from one to three times daily, being given among 20 to 60 therapeutical doses depending on the condition" (Ortega et. al, 2021). The clients at Oxygen Health Spa experience beneficial effects after their first treatment. So how often should you have Hyperbaric Oxygen Therapy? The appropriate treatment of various ailments is as follows with the average being 84-minute sessions over 35 treatments.

  • Decompression sickness and arterial gas embolism: "Recompression rapidly alleviates the symptoms, and tables are available to determine safe periods for subsequent decompression. Treatment should be started as soon as possible and given in sessions of 2-5 hours until the symptoms have resolved" (Leach et. al, 1998).

  • Carbon Monoxide Poisoning: "60 to 90 minutes to clear the carbon monoxide faster and to help with an ischemia-reperfusion injury. With more severe cases of CO poisoning, treat with two to three treatments on a twice-a-day basis to help resolve the reperfusion injury" (Buboltz & Robins, 2022).

  • Post Radiation Damage: "30 preoperative 90-minute sessions and 10 postoperative sessions are recommended" (Leach et. al, 1998).

  • Skin Grafts and Wounds: "Several studies have shown improved healing and a lower incidence of amputation with 4-30 sessions" (Leach et. al, 1998).

  • Multiple Sclerosis: "At least 20 sessions of therapy for 90 minutes over four weeks, and were adequately assessed with evoked potentials and for functional and disability state" (Leach et. al, 1998).

  • Burns: Sessions are 90 minutes in length and should be continued for 20 to 30 sessions (Edwards & Cooper, 2022).

  • Non-Healing Wounds: Non-healing wounds may require 40 treatments or more (Mayo Clinic, 2022).

  • Diabetic Ulcers: "HBOT increased significantly (13 times more) the mean healing rate of chronic lower limb ulcers in diabetic patients, over a mean follow-up period of 45 months" (Albuquerque & Sousa, 2005).

  • Fibromyalgia: "The HBOT protocol comprised 40 sessions, 5 days/week, 90 minutes, 100% oxygen...The study provides evidence that HBOT can improve the symptoms and life quality of FMS patients. Moreover, it shows that HBOT can induce neuroplasticity and significantly rectify abnormal brain activity in pain-related areas of FMS patients" (Efrati et. al, 2015).

  • Parkinson's: 30 days of treatment in 2 sessions of 40 minutes each (Xu et. al, 2018)

  • Bell's Palsy: 60 minutes twice daily, five days per week until the facial palsy resolved; maximum 30 days (Holland et. al, 2012).

  • Colitis: The sessions were repeated five times per week for eight consecutive weeks (Bekheit et. al, 2016).

  • Chrohn's Disease: 1 session per day; 10-50 total sessions (Rossignol, 2012).

  • Asthma: "Depending on the protocol, the estimated duration of the session varies from 1.5 to 2 h and may be performed from one to three times daily, being given among 20 to 60 therapeutical doses depending on the condition" (Ortega et. al, 2021)

  • Fatigue: 10 sessions of HBOT over 12 days. Each treatment session is 105 minutes (Robbins et. al, 2021)

  • Lyme Disease: "HBOT treatment duration of 1.5 hours for 30 sessions" (Huang et. al, 2014).

  • Arthritis: "21 sessions for 40 minutes" (Wilson et. al, 2007).

  • ADHD: 60 one-day sessions for 60 minutes (Hadanny, 2022)

  • Tinnitus: Between 60 and 120 minutes once or twice daily with a typical course will involve 20 to 40 such treatments (Bennett et. al, 2005)

  • Depression: Forty 60 min treatments (Stoller, 2015)

  • PTSD: Forty 60-minute treatments over 6 months (Harch et. al, 2017).

  • Alzheimer's: 60-minute treatments for 14 treatments (Shapira et. al, 2018).

  • Migraines: Forty 60-minute sessions over 8 weeks (Matera et. al, 2019).

  • Anxiety: Six 110-minute sessions per week over eight weeks (Feng et. al, 2017).

The Maximum Time One Should Spend in a Hyperbaric Chamber

At Oxygen Health Spa, the maximum time you can book is 3 hours in one day. The maximum length of time you can safely spend in a hyperbaric oxygen chamber however varies on your condition and needs. We recommend you consult your physician before any treatment. Nevertheless, we figured we would address this question by providing the incidence rate for oxygen toxicity, as a result of HBOT over-exposure, presented by Heyboer et. al, in the National Library of Medicine (2017). They examined 9 various studies depicted in this table:

Possible Side Effects of Hyperbaric Oxygen Therapy

The use of hyperbaric oxygen therapy is typically risk-free as depicted in the chart above regarding incident rates. However, rare complications do occur. Hyperbaric oxygen therapy is used for many benefits and side effects are minimal however some of the side effects of a hyperbaric chamber can include:

  • Temporary nearsightedness (myopia) caused by temporary eye lens changes

  • Middle ear injuries, including leaking fluid and eardrum rupture, due to changes in air pressure

  • Seizures as a result of too much oxygen (oxygen toxicity) in your central nervous system

  • Lung collapse caused by air pressure changes (barotrauma)

  • Lowered blood sugar in people who have diabetes treated with insulin

Final Remarks

At Oxygen Health Spa, our clients begin feeling the effects after their first session. We have had the privilege of serving many of our clients along their journey for years. Each individual has their own needs and everyone's ailments and injuries vary from one to the next. Upon reviewing the literature we found on average the exposure to Hyperbaric Oxygen Therapy consisted of 84-minute sessions over 35 treatments. There are minimal side effects with an insignificant incidence rate. We encourage you to take a breath in the right step today. Contact us!


Primary Data obtained from Oxygen Health Spa.

Leach, R. M., Rees, P. J., & Wilmshurst, P. (1998). Hyperbaric oxygen therapy. Bmj, 317(7166), 1140-1143.

Mayo Clinic (2022). Hyperbaric Oxygen Therapy.

Edwards, M., Singh, M., Selesny, S., & Cooper, J. S. (2017). Hyperbaric treatment of thermal burns.

Efrati, S., Golan, H., Bechor, Y., Faran, Y., Daphna-Tekoah, S., Sekler, G., ... & Buskila, D. (2015). Hyperbaric oxygen therapy can diminish fibromyalgia syndrome–prospective clinical trial. PloS one, 10(5), e0127012.

Buboltz, J. B., & Robins, M. (2021). Hyperbaric treatment of carbon monoxide toxicity. In StatPearls [Internet]. StatPearls Publishing.

Xu, J. J., Yang, S. T., Sha, Y., Ge, Y. Y., & Wang, J. M. (2018). Hyperbaric oxygen treatment for Parkinson's disease with severe depression and anxiety: A case report. Medicine, 97(9).

Holland, N. J., Bernstein, J. M., & Hamilton, J. W. (2012). Hyperbaric oxygen therapy for Bell's palsy. Cochrane Database of Systematic Reviews, (2).

Bekheit, M., Baddour, N., Katri, K., Taher, Y., El Tobgy, K., & Mousa, E. (2016). Hyperbaric oxygen therapy stimulates colonic stem cells and induces mucosal healing in patients with refractory ulcerative colitis: a prospective case series. BMJ Open Gastroenterology, 3(1), e000082.

Rossignol, D. A. (2012). Hyperbaric oxygen treatment for inflammatory bowel disease: a systematic review and analysis. Medical gas research, 2(1), 1-11.

Ortega, M. A., Fraile-Martinez, O., García-Montero, C., Callejón-Peláez, E., Sáez, M. A., Álvarez-Mon, M. A., ... & Canals, M. L. (2021). A general overview on the hyperbaric oxygen therapy: Applications, mechanisms and translational opportunities. Medicina, 57(9), 864.

Robbins, T., Gonevski, M., Clark, C., Baitule, S., Sharma, K., Magar, A., ... & Randeva, H. S. (2021). Hyperbaric oxygen therapy for the treatment of long COVID: early evaluation of a highly promising intervention. Clinical Medicine, 21(6), e629.

Huang, C. Y., Chen, Y. W., Kao, T. H., Kao, H. K., Lee, Y. C., Cheng, J. C., & Wang, J. H. (2014). Hyperbaric oxygen therapy as an effective adjunctive treatment for chronic Lyme disease. Journal of the Chinese Medical Association, 77(5), 269-271.

Wilson, H. D., Toepfer, V. E., Senapati, A. K., Wilson, J. R., & Fuchs, P. N. (2007). Hyperbaric oxygen treatment is comparable to acetylsalicylic acid treatment in an animal model of arthritis. The Journal of Pain, 8(12), 924-930.

Hadanny, A., Catalogna, M., Yaniv, S., Stolar, O., Rothstein, L., Shabi, A., ... & Efrati, S. (2022). Hyperbaric oxygen therapy in children with post-concussion syndrome improves cognitive and behavioral function: a randomized controlled trial. Scientific Reports, 12(1), 1-16.

Bennett, M. H., Kertesz, T., Perleth, M., Yeung, P., & Lehm, J. P. (2012). Hyperbaric oxygen for idiopathic sudden sensorineural hearing loss and tinnitus. Cochrane Database of Systematic Reviews, (10).

Stoller, K. P. (2015). All the right moves: the need for the timely use of hyperbaric oxygen therapy for treating TBI/CTE/PTSD. Medical gas research, 5(1), 1-7.

Harch, P. G., Andrews, S. R., Fogarty, E. F., Lucarini, J., & Van Meter, K. W. (2017). Case control study: hyperbaric oxygen treatment of mild traumatic brain injury persistent post-concussion syndrome and post-traumatic stress disorder. Medical gas research, 7(3), 156.

Shapira, R., Efrati, S., & Ashery, U. (2018). Hyperbaric oxygen therapy as a new treatment approach for Alzheimer’s disease. Neural regeneration research, 13(5), 817.

Matera, D. V., Smith, B., & Lam, B. (2019). Revisiting the expanded use of hyperbaric oxygen therapy for treatment of resistant migraines. Medical gas research, 9(4), 238.

Feng, J. J., & Li, Y. H. (2017). Effects of hyperbaric oxygen therapy on depression and anxiety in the patients with incomplete spinal cord injury (a STROBE-compliant article). Medicine, 96(29).

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