By API Standards
- Ibrutinib
- Ibuprofen
- Icotinib
- Idelalisib
- Iguratimod
- Ilaprazole
- Iloperidone
- Imatinib
- Imidocarb
- Indacaterol
- Indapamide
- Indirubin
- Indobufen
- Indoramin
- Inositol
- Insulin Glargine
- Iohexol
- Ipratropium
- Irbesartan
- Irinotican
- Isavuconazole
- Isoniazid
- Isosorbide
- Istradefylline
- Itopride
- Itraconazole
- Ivabradine
- Ixazomib