The best replacement for formoterol is salmeterol.

The best alternatives to formoterol are rated as following:
★★★★★  salmeterol
★  arformoterol
★  tiotropium
  budesonide
  indacaterol
  fluticasone/salmeterol

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

Other search terms related to formoterol and their ratings are:
★★★★★ budesonide
★★ fluticasone
You have in mind a companion for formoterol and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of formoterol in all years. Click on graph for more.
formoterol
salmeterol
arformoterol