p The only valved holding chamber (VHC) available with the Flow-Vu indicator When patients have trouble using Metered Dose Inhalers (MDIs), the medication that the MDIs dispense may end up on the back of the throat or on the roof of the mouth. AeroChamber Plus Flow-Vu Anti-Static Valved Holding Chamber (VHC) helps patients inhale MDI medications correctly. AeroChamber Plus Flow-Vu VHC is a device available by prescription only for patients who may have difficulty with the coordination and control involved in using MDIs correctly. /p