A humidifier bottle is a medical accessory used with oxygen concentrators or oxygen cylinders to add moisture to the oxygen being delivered to patients. During oxygen therapy, dry oxygen can sometimes cause irritation or dryness in the nose and throat. The humidifier bottle helps solve this by passing the oxygen through sterile water, which adds humidity before it reaches the patient. It is usually made from durable, medical-grade plastic and designed with secure connectors to attach easily to oxygen flow meters or concentrators. Many humidifier bottles also include safety valves and clear measurement markings for proper water levels. Lightweight and easy to clean, this device improves patient comfort during long-term oxygen therapy and helps reduce dryness in the respiratory tract, making breathing support more comfortable and effective.