HBOT increases dissolved oxygen in plasma under pressure to accelerate tissue repair and trigger neuroplasticity. Ozone therapy introduces reactive oxygen species to stimulate immune and antioxidant responses. IV NAD+ replenishes a cellular coenzyme critical for energy metabolism and DNA repair. They work through different mechanisms, treat different conditions best, and are not interchangeable. Here is when each one makes sense.
How Each Therapy Works
- Pressurized O2 dissolves into plasma
- 14 FDA-cleared indications
- 69.7% venous ulcer area reduction (head-to-head)
- $150-$400/session
- Reactive O3 triggers antioxidant response
- Not FDA-approved in US
- 41.3% venous ulcer area reduction (head-to-head)
- Widely practiced in Europe
Hyperbaric Oxygen Therapy (HBOT)
HBOT places you in a pressurized chamber breathing 100% oxygen (in a hard chamber) or concentrated air (in a soft chamber). The elevated pressure dissolves oxygen directly into your blood plasma at levels far beyond what normal breathing achieves. At 2.0 ATA (atmospheres absolute) with 100% oxygen, arterial oxygen reaches approximately 1,800 mmHg, compared to around 100 mmHg at sea level.
This hyperoxygenation drives several downstream effects: angiogenesis (new blood vessel formation), stem cell mobilization from bone marrow, reduced inflammation via suppression of pro-inflammatory cytokines, enhanced white blood cell bacterial killing, and activation of hypoxia-inducible factor (HIF-1) pathways that regulate tissue repair genes.
FDA status: Cleared for 14 specific medical indications. Used off-label for dozens of other conditions. In the only head-to-head human trial against ozone therapy (Pasek et al., 2023),7 HBOT reduced venous ulcer area by 69.7% versus ozone’s 41.3%.
Ozone Therapy
Ozone therapy introduces ozone (O3), a reactive form of oxygen, into the body through several possible routes: major autohemotherapy (withdrawing blood, mixing it with ozone, and reinfusing it), rectal or vaginal insufflation, or direct injection into joints or tissues.
The mechanism is fundamentally different from HBOT. Ozone does not increase tissue oxygenation through pressure. Instead, ozone creates a controlled oxidative stress that triggers the body’s antioxidant defense systems (upregulating superoxide dismutase, catalase, and glutathione peroxidase), modulates the immune system, improves red blood cell flexibility and oxygen-hemoglobin dissociation (making it easier for tissues to extract oxygen from blood), and has antimicrobial effects. A 2018 systematic review of 9 RCTs (n=453) found ozone significantly improved chronic wound closure, though “no conclusive evidence” of superiority over standard care.2
FDA status: The FDA has not approved ozone as a medical treatment in the United States. It is classified as a toxic gas with no known useful medical application by the FDA. Ozone therapy is practiced in the US under physician discretion, and more widely accepted in Europe and Latin America.
IV NAD+ Therapy
Nicotinamide adenine dinucleotide (NAD+) is a coenzyme present in every cell in the body. It is essential for mitochondrial energy production, DNA repair, sirtuin activation (linked to longevity pathways), and over 500 enzymatic reactions. NAD+ levels decline with age, chronic illness, and metabolic stress.
IV NAD+ therapy delivers the coenzyme directly into the bloodstream, bypassing the digestive system for higher bioavailability than oral supplements. Typical infusions are 250 to 1,000 mg over 2 to 6 hours. The proposed mechanisms include restoring mitochondrial function, enhancing cellular energy production, supporting DNA repair pathways, and reducing neuroinflammation.
FDA status: NAD+ is not FDA-approved as a treatment for any specific condition. It is administered as a nutritional supplement or compounded preparation under physician supervision. A 2024 RCT found that IV NR (nicotinamide riboside) actually outperformed IV NAD+ for blood NAD+ levels at 3 hours, with 75% shorter infusion times and fewer side effects.5
“In the only human head-to-head trial, HBOT reduced venous ulcer area by 69.7% versus ozone therapy’s 41.3% — but ozone provided significantly more pain relief.”
Pasek et al., IJERPH 2023
Head-to-Head Comparison
| Factor | HBOT | Ozone Therapy | IV NAD+ |
|---|---|---|---|
| Mechanism | Pressure-driven tissue hyperoxygenation dissolves O2 into plasma at 10-15x normal levels | Controlled oxidative stress upregulates antioxidant pathways (Nrf2, glutathione); modulates cytokines | Coenzyme replenishment supporting sirtuin activation, PARP-mediated DNA repair, mitochondrial ATP |
| Evidence level | Strong — 14 FDA-approved indications, hundreds of RCTs, multiple Cochrane reviews | Emerging — systematic reviews exist but high bias; most RCTs are small; no FDA approval | Weak — mostly small pilots; recent RCTs raise questions about IV NAD+ vs IV NR |
| Typical protocol | 60-90 min sessions, 20-60 sessions, 5x/week at 2.0-2.4 ATA | 30-60 min sessions, 10-20 sessions; autohemotherapy or insufflation; no standardized dosing | 2-4 hour IV drip per session; 5-10 sessions typical; 250-500 mg per infusion |
| Cost range | $150-400/session; full course $5,000-15,000; Medicare covers approved uses | $100-300/session; 10-20 sessions: $2,000-5,000; rarely insured | $500-1,000/session; 5-10 sessions: $5,000-10,000+; never insured |
| FDA status | Cleared for 14 conditions | Not FDA-approved; classified as toxic gas; banned or restricted in some US states | Not FDA-approved as therapy; sold as wellness service or compounded preparation |
| Side effects | Ear barotrauma (common, mild); O2 toxicity seizures (rare); claustrophobia; temporary myopia | Risk of air embolism (IV route); oxidative damage if overdosed; respiratory irritation; deaths reported from improper administration | Nausea, chest pressure, GI symptoms, elevated heart rate during infusion; possible inflammatory response |
| Best supported conditions | Diabetic wounds, radiation injury, decompression sickness, CO poisoning, chronic wounds, sudden hearing loss | Chronic wounds (weak evidence); dental infections (emerging); musculoskeletal pain (emerging) | Addiction/withdrawal (very small studies); fatigue; possibly heart failure (RCT pending) |
When to Choose Each Therapy
Choose HBOT when:
- You have a condition with published HBOT evidence (long COVID, TBI, stroke recovery, diabetic wounds, radiation injury)
- You need tissue-level repair, not just systemic modulation
- Your condition involves poor blood flow or oxygen delivery to specific tissues
- You want the therapy with the strongest regulatory and evidence base
Choose ozone therapy when:
- You are dealing with chronic infections (Lyme, mold illness, viral reactivation) where immune modulation is the priority
- You want to enhance your body’s antioxidant capacity
- Joint conditions where direct ozone injection (prolozone) may help
- You are already doing HBOT and want a complementary therapy that works through a different mechanism
Choose IV NAD+ when:
- Fatigue, brain fog, or low energy are your primary complaints and you suspect mitochondrial dysfunction
- You are in addiction recovery (NAD+ has been used in detox protocols since the 1960s)
- You want to support cellular aging pathways (sirtuin activation, DNA repair)
- You are looking for a shorter-term intervention that can complement longer HBOT or other protocols
“A 2024 RCT found that IV NR (nicotinamide riboside) outperformed IV NAD+ for blood NAD+ levels, had 75% shorter infusion times, and caused fewer side effects — raising questions about whether IV NAD+ is the best way to boost NAD+.”
Hawkins et al., medRxiv 2024
Can You Stack These Therapies?
Yes, and many integrative medicine practitioners do. These therapies target different physiological systems and can complement each other:
- HBOT + IV NAD+: Common combination for TBI and long COVID. HBOT drives tissue repair and neuroplasticity; NAD+ supports the mitochondrial energy needed for those repair processes.
- HBOT + ozone therapy: Used in chronic infection protocols. HBOT kills anaerobic bacteria directly through oxygen exposure; ozone modulates the immune response to help the body clear persistent infections.
- All three: Some longevity clinics offer all three as part of comprehensive protocols. The rationale is that they address three different bottlenecks: tissue oxygenation (HBOT), immune function (ozone), and cellular energy (NAD+).
There are no published studies specifically examining these combinations head-to-head. The stacking approach is based on mechanistic reasoning and clinical observation, not randomized trial data.
Frequently Asked Questions
Is HBOT better than ozone therapy?
They are not directly comparable because they work through different mechanisms. HBOT has a stronger evidence base and FDA clearance for specific conditions. Ozone therapy has a longer history in European medicine and may be better suited for immune modulation. The one head-to-head human trial (Pasek 2023) found HBOT superior for wound closure while ozone provided better pain relief.7
Is IV NAD+ worth the cost?
At $500 to $1,000 per infusion, IV NAD+ is expensive relative to the current evidence base. Recent data from a 2024 RCT suggests IV NR may actually outperform IV NAD+ for raising blood NAD+ levels while causing fewer side effects.5 If your primary issues are fatigue and brain fog, consider discussing IV NR with your provider as well. For conditions with stronger evidence for HBOT (long COVID, TBI), start with HBOT and consider NAD+ as an adjunct.
Can I do ozone therapy at home?
Some patients do rectal ozone insufflation at home with purchased equipment. This is less regulated than clinic-based major autohemotherapy. Home ozone carries additional safety risks (ozone is a respiratory irritant and must not be inhaled). If you pursue home ozone, work with a practitioner who can supervise your protocol and ensure you are using medical-grade equipment.
Which therapy should I try first?
Start with the therapy that has the strongest evidence for your specific condition. For most conditions in the BaricBoost coverage area (long COVID, TBI, stroke, wound healing), that is HBOT. If your primary issue is immune dysfunction or chronic infection, consult with an integrative medicine practitioner about ozone. If fatigue and mitochondrial function are your main concerns, IV NAD+ (or IV NR) may be the right starting point.
References
- Altinel O et al. (2011). Comparison of hyperbaric oxygen and medical ozone therapies in a rat model of experimental distal colitis. Scand J Clin Lab Invest. DOI: 10.3109/00365513.2010.548875
- Fitzpatrick E, Holland O, Vanderlelie J. (2018). Ozone therapy for chronic wounds: A systematic review. Int Wound J. DOI: 10.1111/iwj.12907
- Gibson SM et al. (2021). IV NAD Improves Cognitive Performance in Human Subjects. Arch Phys Med Rehabil. DOI: 10.1016/j.apmr.2021.07.585
- Hadanny A, Efrati S et al. (2021). HBOT for COVID-19 Patients: A Prospective RCT. SSRN. DOI: 10.2139/SSRN.3745115
- Hawkins J et al. (2024). Randomized, placebo-controlled pilot: Niagen+ IV and NAD+ IV in healthy adults. medRxiv. DOI: 10.1101/2024.06.06.24308565
- Karli G et al. (2023). Comparison of HBO and ozone in testicular torsion model. DOI: 10.1007/s00068-023-02276-y
- Pasek J et al. (2023). Topical HBOT vs Local Ozone in Venous Leg Ulcers. Int J Environ Res Public Health. DOI: 10.3390/ijerph20031967
- Ponsoni C et al. (2025). Ozone therapy in dentistry: systematic review and meta-analysis. MedNEXT. DOI: 10.54448/mdnt22s610
- Reyna K et al. (2026). IV NAD+ vs NR: retrospective tolerability pilot. Front Aging. DOI: 10.3389/fragi.2026.1652582
- Uysal B et al. (2010). HBO vs Ozone in Acute Necrotizing Pancreatitis. Pancreas. DOI: 10.1097/MPA.0b013e3181bb5ae3
Medical Disclaimer
The content on BaricBoost.com is for informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.
Author
Seph Fontane Pennock is the founder of BaricBoost.com and Regenerated.com, a clinic directory for regenerative medicine serving 10,000+ providers across the United States. He previously built and sold PositivePsychology.com, which grew to 19 million users and became the largest evidence-based positive psychology resource on the web. Seph brings direct experience as an HBOT patient, having completed protocols at clinics across three continents while navigating mold illness, systemic inflammation, and autoimmune conditions. His treatment journey includes hyperbaric oxygen therapy, peptide protocols, NAD+ therapy, and consultations with specialists from Dubai to Cape Town to Mexico. This combination of entrepreneurial track record and lived patient experience shapes everything published on BaricBoost.com. Every article is grounded in peer-reviewed research, informed by real clinical encounters, and written for patients making high-stakes treatment decisions. Seph's focus is on bringing transparency, scientific rigor, and practical guidance to the hyperbaric oxygen therapy space.
