How to Read Oxygen Therapy Prescriptions: Understanding LPM & Delivery Modes
When your doctor prescribes oxygen therapy, you’ll often see terms like “2 LPM continuous flow” or “pulse dose mode at 3 LPM.” Understanding these terms is essential to ensure you’re getting the right oxygen supply for your health needs. In this guide, we’ll help you decode your oxygen prescription LPM (liters per minute) and understand the difference between continuous oxygen concentrators and pulse dose oxygen concentrators — so you can choose the best VARON device for your lifestyle.
What Does LPM Mean in an Oxygen Prescription?
Oxygen prescription LPM refers to how much oxygen your body needs per minute, measured in liters. The “LPM” value in your prescription — such as 1 LPM, 3 LPM, or 5 LPM — determines how much oxygen the concentrator delivers to you.

A higher oxygen prescription LPM means you need a greater flow of oxygen to maintain optimal blood oxygen levels. For example:
-
1–2 LPM: Typically for mild oxygen therapy, often during sleep or light activity.
-
3–5 LPM: For moderate, continuous oxygen support.
-
6–7 LPM or higher: Usually for patients needing consistent oxygen for longer periods or with more severe conditions.
Understanding your oxygen prescription LPM helps ensure your concentrator delivers exactly what your body needs — no more, no less.
Continuous vs. Pulse Dose: Two Main Oxygen Delivery Modes
Oxygen concentrators come in two main types — continuous oxygen concentrator and pulse dose oxygen concentrator — each suited to specific medical and lifestyle needs.
1. Continuous Oxygen Concentrator
A continuous oxygen concentrator provides a constant stream of oxygen, measured by the prescribed LPM. It delivers oxygen whether you’re inhaling or exhaling, ensuring steady oxygen support. This makes it ideal for home use or for patients requiring stable oxygen throughout the day and night.
Example:
The VARON 1–7L/min Home Oxygen Concentrator VH-3 is a powerful continuous oxygen concentrator designed for long-term home use. It offers 1–7L adjustable continuous flow oxygen supply, up to 90% oxygen concentration — allowing you to precisely match your oxygen prescription LPM.
It also incorporates a nebulization function and auto oxygen humidification function, which improve comfort during inhalation. With low noise, a power-saving hidden display, and ultra-intelligent control, the VH-3 ensures quiet, efficient, and user-friendly operation.
This continuous oxygen concentrator is perfect for patients who need consistent oxygen therapy during rest, sleep, or light activity at home.
2. Pulse Dose Oxygen Concentrator
A pulse dose oxygen concentrator delivers oxygen only when you inhale. Instead of a continuous flow, it senses your breathing and sends a pulse of oxygen with each breath. This makes it energy-efficient and portable — perfect for users who need oxygen on the go.
Example:
The VARON 5L Pulse Flow Portable Oxygen Concentrator VP-2 provides 1–5L adjustable pulse flow oxygen supply of 93%±3% concentration. It features dual oxygen delivery modes for both continuous and pulse settings, ensuring a stable and reliable oxygen supply at all times.
With a large replaceable battery and a lightweight 4.85 lb body, the VP-2 makes mobility easy — ideal for travel, errands, or outdoor activities. This pulse dose oxygen concentrator lets you stay active while still meeting your prescribed oxygen needs.
Matching Your Oxygen Prescription LPM with the Right Device
Choosing between a continuous oxygen concentrator and a pulse dose oxygen concentrator depends on your oxygen prescription LPM, lifestyle, and daily activity levels.

| Factor | Continuous Oxygen Concentrator (VH-3) | Pulse Dose Oxygen Concentrator (VP-2) |
|---|---|---|
| Delivery Type | Continuous flow | Breath-triggered pulse |
| Oxygen Concentration | Up to 90% | 93% ± 3% |
| Flow Range | 1–7 LPM | 1–5 LPM |
| Best Use | Home, sleep, long-term therapy | Travel, active lifestyle |
| Key Feature | Auto humidification & nebulization | Dual oxygen delivery modes |
| Mobility | Stationary | Portable with battery |
Before purchasing, always check your oxygen prescription LPM and consult your healthcare provider to confirm whether a continuous oxygen concentrator or pulse dose oxygen concentrator is suitable for you.
VARON: Trusted Oxygen Solutions for Every Need
VARON combines medical-grade reliability with user-focused innovation. Whether you need stable, all-day home oxygen or portable, travel-friendly oxygen delivery, VARON provides a solution that aligns with your prescription and lifestyle.
-
For home users: The VARON VH-3 continuous oxygen concentrator delivers customizable flow rates and smart humidification for maximum comfort.
-
For travelers: The VARON VP-2 pulse dose oxygen concentrator offers mobility, long battery life, and consistent performance wherever you go.
Both models are engineered to meet your oxygen prescription LPM requirements accurately — ensuring safe, effective, and worry-free oxygen therapy.
Final Thoughts
Understanding your oxygen prescription LPM is the key to choosing the right oxygen concentrator. Whether you need a continuous oxygen concentrator like the VARON VH-3 for steady oxygen at home, or a pulse dose oxygen concentrator like the VARON VP-2 for mobility and convenience, VARON ensures you breathe easier with advanced, reliable, and efficient technology.
Discover the full range of VARON oxygen concentrators in the Philippines and find the model that fits your prescription and lifestyle.
👉 Explore VARON Oxygen Solutions Today – Breathe Better, Live Better.



