An apparatus and method for preparing a pH balanced saline solution and using the saline solution for rinsing a nasal passage. The apparatus includes a container having flexible sidewalls and an opening for a removable cap. The cap has a rounded convex upper portion curving away from an opening at the cap's uppermost surface and has a conduit in the cap's interior, which conduit extends into the container when the apparatus is fully assembled or is connected to a tube that extends in the container. A saline solution is prepared by adding sodium chloride and sodium bicarbonate to distilled water. The sidewalls of the container, filled with the saline solution, are compressed to urge the saline solution through the conduit, or tube and conduit, and through the opening in the cap and into a nasal passage, the cap being pressed against a nostril to provide a comfortable and effective seal.
A method and device for filling or partially filling the nasal cavities of a person through both nostril openings with a liquid essentially while the head of the person is at a safe forward angle of tilt by pooling or tubing means for establishing communication of liquid with the nasal cavity of the person and by inhalation or external pressure allowing any liquid exiting the rear of the nasal cavities to drain into the back of the oral cavity of the mouth and embodiments of the device requiring the head of the user to be at a prescribed or greater angle of tilt during use by comprising spilling or shutting off means for assuring the head of the person is at least at a prescribed forward angle of tilt during use.