The best replacement for mdi is mdix.

The best alternatives to mdi are rated as following:
★★★★★  mdix
★★★★  sdi
★★★★  dpi
★★★★  nebulizer
★★  tdi
★  hfa
★  svn
★  nitie
★  nmims
★  sp jain
★  sdi r
★  imt
★  insulin pump
  inhaler
  fms
  iimk
  lake region
  iift
  xlri
  dry powder
  hdi
  neb
  pmdi
  iim shillong
  spacer
  hhn
  aerosol
  advair dpi
  nebulizers
  diskus
  presque isle
  albuterol mdi
  csii

Your alternative for mdi is not listed? Suggest!
Speaking about mdi, one probably shouldn't forget about spacer.

Other search terms related to mdi and their ratings are:
★★★★★ spacer
★★★ aerochamber
spacer device
vhc
You have in mind a companion for mdi and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of mdi in all years. Click on graph for more.
mdi
mdix
sdi