Hyperbaric Oxygen Therapy, commonly known as HBOT, is becoming more familiar in Vietnam’s wellness and medical-wellness space. In destinations such as Hoi An, Da Nang, Ho Chi Minh City, and Hanoi, more wellness centers are introducing advanced recovery therapies alongside traditional spa models. This is happening since locals, travelers, expats are actively looking for more curated health-conscious travel lifestyles.
This guide explains what you need to know before your first HBOT session, from how the treatment works and what to expect during the appointment to who should avoid or delay therapy.
How Does HBOT Therapy Work?
HBOT therapy works by combining oxygen with increased atmospheric pressure inside a hyperbaric chamber. Under normal conditions, oxygen is mostly carried through the body by red blood cells. In an HBOT session, the higher-pressure environment allows oxygen to behave differently, making more oxygen available in the blood and supporting delivery to tissues that may need additional recovery support.
- More oxygen dissolves into the blood plasma, which is the liquid part of the blood. This can improve overall oxygen availability beyond what red blood cells normally carry.
- Oxygen may reach areas with reduced circulation because more oxygen is available in the plasma, helping support tissues where blood flow is limited or healing demand is higher.
- Tissue repair processes may be supported through oxygen’s role in collagen production, new blood vessel formation, and immune cell activity.
- Treatment conditions are carefully controlled, including chamber pressure, oxygen exposure, session duration, and safety procedures.
What to Expect During Your First HBOT Session
Before Session
- Before your first HBOT session, you will complete a health screening and discuss your medical history, current medications, wellness goals, and any conditions that may affect your safety or comfort during treatment.
- Verita Health nurses may ask about ear or sinus problems, lung conditions, recent illness, diabetes, pregnancy, claustrophobia, previous surgeries, or any health concerns that could influence whether HBOT is suitable for you at that time.
- You will also receive instructions on what to wear and what not to bring into the chamber. Certain items, such as electronics, oils, lotions, perfumes, or flammable materials, may not be allowed for safety reasons.
This stage matters because HBOT should be tailored to your health profile. It is not a one-size-fits-all wellness service, and the right preparation helps create a safer, calmer first experience.
During Session
- During the session, you will lie inside the hyperbaric chamber while the pressure gradually increases. The process is usually steady and controlled, giving your body time to adjust.
- As the chamber pressurizes, you may feel fullness or popping in your ears, similar to what happens during takeoff or landing on a flight. This is a common sensation when pressure changes.
- A nurse should guide you on how to equalize ear pressure and remain available throughout the session if you feel discomfort, anxiety, or need assistance at any point.
After Session
- At the end of the session, the chamber pressure is slowly returned to normal before you exit. This gradual process helps your body adjust comfortably after being in a pressurized environment.
- Some people feel relaxed or slightly tired afterward, while others may not notice an immediate difference after the first session. Both responses can be normal, especially when HBOT is part of a longer wellness or recovery plan.
After your session, it is helpful to hydrate, avoid rushing into intense activity, and give your body time to settle before returning to the rest of your day. The Verita Health team will check how you feel, ask about any ear pressure or discomfort, and explain what to watch for after leaving the centre.
Comparing Mild HBOT vs. Medical HBOT
Not all hyperbaric oxygen experiences are the same. Mild HBOT and medical HBOT can differ in chamber type, pressure level, oxygen delivery, clinical oversight, and intended use.
| Factor | Mild Hyperbaric Chamber | Medical HBOT |
| Typical Pressure Range | Often around 1.1–1.35 ATA, and up to 1.5 ATA | Commonly around 1.5 – 1.9 ATA |
| Primary Objective |
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| Potential Benefits |
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| Suitable For | Screened wellness users, beginners, and people looking for lower-intensity recovery support under appropriate supervision. | Patients with a clear medical need, physician-directed therapy, or conditions where HBOT is part of an established treatment protocol. |
| Supervision Needed | Should still involve screening and clear instructions before the session. | Requires stricter medical oversight, patient monitoring, fire-safety procedures, pressure protocols, and emergency readiness. |
At Verita Health Hoi An, we offer a more flexible and personalised HBOT experience with two different chamber options. You can choose to lie down in a spacious chamber for a more relaxing session, or sit upright in a compact chamber depending on your comfort and preference. Our team will guide you in selecting the most suitable option based on your needs, ensuring a comfortable and supportive experience throughout your therapy.
Who Should Avoid or Delay HBOT?
HBOT is not suitable for everyone, and some people should delay treatment until a health concern has been reviewed or resolved. A proper screening helps protect your safety, especially because pressure changes can affect the ears, sinuses, lungs, and blood sugar control. Before booking a session, speak with a healthcare provider if any of the following apply to you:
- An untreated collapsed lung or a history of serious lung disease
- Current ear pain, sinus infection, fever, cold, or congestion
- Diabetes, especially if you use insulin or glucose-lowering medication
- Pregnancy or a complex medical condition
- Severe claustrophobia or anxiety in enclosed spaces
- Recent surgery, implanted devices, or medications that require review
What HBOT Can and Cannot Promise
For first-time clients, the most responsible way to approach HBOT is with clear expectations: it may support oxygen delivery and recovery-related processes, but it does not replace medical care or promise instant transformation.
| HBOT will support | HBOT cannot promise |
| Better oxygen availability in the body under controlled pressure | Immediate results after one session |
| Recovery, relaxation, and tissue-support processes when used appropriately | A cure for every condition or symptom |
| A broader wellness plan guided by trained professionals | Replacement for diagnosis, medication, or medical treatment |
How to Choose an HBOT Centre in Vietnam
Choosing an HBOT centre should go beyond price or convenience. Because treatment involves oxygen, pressure, and safety protocols, look for a provider that takes screening, supervision, and client comfort seriously.
- Licensed medical or wellness setting
- Clear health screening before treatment
- Trained staff available during the session
- Transparent guidance on pressure, duration, and safety rules
- Clean, calm environment that helps you feel at ease
If this is your first time considering HBOT, experience it at Verita Health Hoi An, a longevity centre in Central Vietnam designed for travellers who want a more guided approach to recovery, wellness, and healthy ageing. You can receive professional guidance from the Verita Health team, with access to consultation from Dr. Abdulla El Hossami, Verita Healthcare’s Leading Medical Expert, to better understand whether HBOT is suitable for your health profile, recovery goals, and travel schedule. Make an appointment today to receive personalised advice and a safe, well-supported first HBOT experience.