When patients have trouble using Metered Dose Inhalers (MDIs), the medication that the MDIs dispense may end up on the tongue, on the back of the throat or in the air rather than in the lungs. AeroChamber Plus® Valved Holding Chamber (VHC) helps patients inhale MDI medications correctly. AeroChamber Plus VHC is a device available for patients who may have difficulty with the coordination and control involved in using MDIs correctly. Inhalation Valve: Built-in, low-resistance, one-way valve opens easily and prevents exhalation back into the chamber. Universal Adapter: Fits most commonly prescribed MDIs. Dishwasher Safe: Take-apart unit allows for easy cleaning and is dishwasher safe at temperatures as stated in leaflet.