| Kaolin | 1332-58-7 | Antidiarrheals | 3 |
| Ketanserin tartrate | 83846-83-7 | 5HT2 antagonists | 3 |
| L-5-Methyltetrahydrofolate Calcium | 151533-22-1 | Vitamins | 3 |
| L-Citrulline | 372-75-8 | Amino acids | 3 |
| Lesinurad | 878672-00-5 | Uric acid lowering agents | 3 |
| Levobupivacaine hydrochloride | 27262-48-2 | | 3 |
| Lifitegrast | 1025967-78-5 | | 3 |
| Lixisenatide | 320367-13-3 | GLP1 agonists | 3 |
| Lurbinectedin | 497871-47-3 | Antineoplastics | 3 |
| Macrogol 1000 | | Laxatives | 3 |
| Manganese | 7439-96-5 | Means in metabolic disorders | 3 |
| Maropitant | | Antiemetics | 3 |
| Mavacamten | 1642288-47-8 | Cardiac stimulants | 3 |
| Meat Peptone | | Indifferent resources | 3 |
| Medetomidine | 86347-14-0 | Alpha-2 adrenergic agonist | 3 |
| Medrogestone | 977-79-7 | Progestagens | 3 |
| Menadione | 58-27-5 | Vitamins | 3 |
| Mephenesin | | Muscle relaxants | 3 |
| Mequitazine | 29216-28-2 | Antihistamines | 3 |
| Metaraminol | 54-49-9 | Adrenergic agents | 3 |
| Methyl nalbuphine | 90242-27-6 | Opioid analgesics | 3 |
| Methylnaltrexone | 916055-93-1 | Opioid antagonists | 3 |
| Methylprednisolone Sodium Succinate | | Corticosteroids | 3 |
| Methylprednisolone acetate Micronised | | Corticosteroids | 3 |
| Metyrosine | 672-87-7 | Adrenergic agents | 3 |
| Midostaurin | 120685-11-2 | Protein kinase inhibitors | 3 |
| Miglitol | 72432-03-2 | Glycemic Agents | 3 |
| Mivacurium | 133814-19-4 | Neuromuscular blocking agents | 3 |
| Morclofone | 31848-01-8 | Anti-arrhythmics | 3 |
| Mycophenolate Sodium | 137863-13-9 | | 3 |
| Myo-Inositol | | Vitamins | 3 |
| N-Acetyl-L-carnosine | 113507-06-5 | | 3 |
| N-Acetylcysteine | | Mucolytics | 3 |
| N-Acetylneuraminic acid | 131-48-6 | Other therapeutic nutrients/minerals/electrolyte | 3 |
| N-Methylnorbuprenorphine 3-Methyl Ether | 16196-70-6 | Opioid analgesics | 3 |
| NAD | | | 3 |
| Nabilone | 51022-71-0 | Non-opioid analgesics | 3 |
| Nafarelin | 76932-56-4 | Gonadorelin agonists | 3 |
| Natamycin | 7681-93-8 | Antimycotics | 3 |
| Nitric Oxide | 10102-43-9 | Vasodilators | 3 |