| Indium In-111 pentetate | 135998-32-2 | Other substances | 0 |
| Indobufen | 63610-08-2 | Antihypertensive agents | 0 |
| Indole-3-carbinol | 700-06-1 | Antineoplastics | 0 |
| Indoleacetamide | 879-37-8 | | 0 |
| Indoleacetic acid | 87-51-4 | | 0 |
| Indolylpropionic Acid | | | 0 |
| Indoprofen | 31842-01-0 | | 0 |
| Indoximod | 110117-83-4 | Other substances | 0 |
| Indoxyl sulfate | 487-94-5 | | 0 |
| Indralin | 156691-86-0 | | 0 |
| Indusatumab vedotin | 1514889-12-3 | Other substances | 0 |
| Inebilizumab | 1299440-37-1 | Anticancer drugs | 0 |
| Inecalcitol | 163217-09-2 | | 0 |
| Infigratinib | 872511-34-7 | Anticancer drugs | 0 |
| Ingavirin | 219694-63-0 | Anti-infective Agents | 0 |
| Ingenol | Ingenol | | 0 |
| Ingenol disoxate | 1383547-60-1 | | 0 |
| Iniparib | 160003-66-7 | Antineoplastics | 0 |
| Inlezifigene civaparvovec | 2143578-31-6 | | 0 |
| Inobrodib | 2222941-37-7 | | 0 |
| Inodiftagene vixteplasmid | 2166100-08-7 | | 0 |
| Inolimomab | 152981-31-2 | Other substances | 0 |
| Inosine 5'-sulfate | 70023-32-4 | Gastrointestinal Agents | 0 |
| Inosinic Acid | 131-99-7 | | 0 |
| Inositol 2,4,5-trisphosphate | 91840-07-2 | | 0 |
| Inositol nicotinate | 6556-11-2 | Lipid-lowering agents | 0 |
| Inotersen | 1492984-65-2 | Central Nervous System Agents | 0 |
| Inotuzumab ozogamicin | 635715-01-4 | Antibacterials | 0 |
| Insulin Detemir | 169148-63-4 | | 0 |
| Insulin Glulisine | 207748-29-6 | | 0 |
| Insulin argine | 68859-20-1 | Other substances | 0 |
| Insulin icodec | 1188379-43-2 | Hormonal Agents | 0 |
| Insulin peglispro | 1200440-65-8 | Hormonal Agents | 0 |
| Insulin tregopil | 874442-57-6 | Other substances | 0 |
| Intepirdine | 607742-69-8 | | 0 |
| Interferon Alfa-2a, Recombinant | 76543-88-9 | | 0 |
| Interferon Alfa-2b, Recombinant | 98530-12-2 | | 0 |
| Interferon alfa-n1 | 74899-72-2 | | 0 |
| Interferon alfa-n3 | | | 0 |
| Interferon alfacon-1 | 118390-30-0 | | 0 |