By API Standards
- Ibandronate Sodium Monohydrate
- Ibrutinib
- Ibuprofen
- Idebenone
- Idelalisib
- Iguratimod
- Ilaprazole
- Iloperidone
- Imatinib
- Imipramine
- Imiquimod
- Indacaterol
- Indapamide
- Indigo Carmine
- Indobufen
- Indocyanine
- Indocyanine Green
- Indometacin
- Indomethacin
- Indoramin
- Iodine
- Iohexol
- Ipratropium
- Irbesartan
- Irganox
- Irganox 1035
- Irinotican
- Isavuconazole
- Isoniazid
- Isoprenaline
- Isothipendyl
- Isotretinoin
- Itopride
- Itraconazole
- Ivabradine
- Ivabradine Hydrochloride
- Ivacaftor
- Ivermectin
- Ixazomib