By API Standards
- Rabeprazole
- Ralfinamide
- Raloxifene HCl
- Ramelteon
- Ranitidine
- Ranolazine
- Rapamycin
- Rasagiline
- Rebamipide
- Regorafenib
- Remdesivir
- Repaglinide
- Ribociclib
- Rifaximin
- Riociguat
- Risperidone
- Ritonavir
- Rivaroxaban
- Rivastigmine
- Roflumilast
- Ropinirole
- Rosuvastatin
- Roxadustat
- RPR 121057
- RS 94287
- Rufinamide
- Rupatadine
- Rutin