The best replacement for nitroglycerin is nitroprusside.

The best alternatives to nitroglycerin are rated as following:
★★★★★  nitroprusside
★★★  tnt
★★  nifedipine
★★  nipride
★★  aspirin
★★  nitric oxide
★  nitroglycerin
★  dynamite
★  isosorbide mononitrate
  nitrates
  isordil
  nitrostat
  nitrate
  nicardipine
  isosorbide dinitrate

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

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



Google Trends

Scale is based on the average worldwide traffic of nitroglycerin in all years. Click on graph for more.
nitroglycerin
nitroprusside
tnt