AeroEclipse XL Nebuliser with breath actuated delivery, aerosol is only produced when you breathe in. This means medication is not wasted between breaths or if you need to take a break (for example if you need to cough or have a conversation). This puts you in control of your aerosol treatment. Other nebulizers continuously produce aerosol regardless of whether you are inhaling, exhaling or resting, resulting in medication being lost to the air instead of delivered to your lungs.