- Ibandronate
- Ibandronate Sodium
- Ibandronic Acid
- Ibogaine
- Ibrutinib
- Ibudilast
- Ibufenac
- Ibuprofen
- Ibutilide
- Icatibant
- Icotinib
- Idarubicin
- Idebenone
- Idelalisib
- Iditol
- Idobutal
- Ifosfamide
- Iguratimod
- Ilaprazole
- Illudin
- Iloperidone
- Iloprost
- Imatinib
- Imazapyr
- Imazethapyr
- Imeglimin
- Imidacloprid
- Imidapril
- Imidazol
- Imidazole
- Imidocarb
- Imidocarb Dipropiona...
- Iminostilbene
- Imipenem
- Imipramine
- Imiprothrin
- Imiquimod
- Indacaterol
- Indacaterol Maleate
- Indapamide
- Indazole
- Indicine
- Indigopurpurin
- Indinavir
- Indirubin
- Indobufen
- Indocyanine
- Indocyanine Green
- Indole
- Indoleacetic Acid
- Indomethacin
- Indoramin
- Indoxacarb
- Infigratinib
- Ingenol
- Inosine
- Inositol
- Intermedine
- Intermedine Na
- Iodixanol
- Iodobenzene
- Iodoethane
- Iohexol
- Ionone
- Iopamidol
- Iopromide
- Ioversol
- Ioxaglic
- Ioxaglic Acid
- Ipconazole
- Ipomeanol
- Ipragliflozin
- Ipratropium
- Ipratropium Bromide
- Ipriflavone
- Iprobenfos
- Iptacopan
- Irbesartan
- Irganox
- Irinotecan
- Iron Saccharate
- Irostadine
- Irsogladine
- Isatin
- Isavuconazole
- Isavuconazonium
- Isavuconazonium Sulf...
- Isocarbofos
- Isoconazole
- Isocycloseram
- Isodesmosine
- Isoeugenol
- Isofenphos
- Isoflavone
- Isoflurane
- Isoleucine
- Isomaltitol
- Isomaltol
- Isomaltose
- Isomelezitose
- Isometheptane
- Isometheptene
- Isoniazid
- Isoniazid�
- Isoorientin
- Isoparvifuran
- Isopetasin
- Isophorone
- Isoprenaline
- Isopropylmagnesium
- Isoproterenol
- Isopulegol
- Isoquinoline
- Isosorbide
- Isosorbide Dinitrate
- Isosorbide Mononitra...
- Isosulfan
- Isothipendyl
- Isotretinoin
- Isovaleric Acid
- Isoxaflutole
- Isoxsuprine
- Isradipine
- Istradefylline
- Itaconic Acid
- Itopride
- Itraconazole
- Ivabradine
- Ivacaftor
- Ivermectin
- Ivosidenib
- Ixabepilone
- Ixazomib
- Izuforant