The best replacement for saccharin is aspartame.

The best alternatives to saccharin are rated as following:
★★★★★  aspartame
★★★★★  stevia
★★★★★  sucralose
★★  sucrose
★★  splenda
★★  saccharin
★  saccharine
  sodium saccharin
  aspartame worse
  nutrasweet

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

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



Google Trends

Scale is based on the average worldwide traffic of saccharin in all years. Click on graph for more.
saccharin
aspartame
stevia