| Kanamycin Mono Sulphate | 25389-94-0 | Aminoglycosides | 2 |
| Ketazolam | 27223-35-4 | Benzodiazepines | 2 |
| L-Ascorbic Acid (2-Glucoside) | 129499-78-1 | | 2 |
| Lactobacillus acidophilus | 7778-80-5 | | 2 |
| Lapatinib Ditosylate | 388082-78-8 | | 2 |
| Lasmiditan | 439239-90-4 | Serotonin receptor agonists | 2 |
| Lemon oil | 136-47-0 | Herbal remedies | 2 |
| Lemon verbena leaf | | Herbal remedies | 2 |
| Lepirudin | 138068-37-8 | Direct thrombin inhibitors | 2 |
| Leucovorin | 58-05-9 | Antidotes | 2 |
| Leuprolide Acetate | 74381-53-6 | Gonadorelin agonists | 2 |
| Levalbuterol | 50293-90-8 | | 2 |
| Levoleucovorin | 68538-85-2 | Antidotes | 2 |
| Levorphanol | 77-07-6 | Opioid analgesics | 2 |
| Liraglutide Main Chain (GLP7-37) | 204521-68-6 | | 2 |
| Lisuride | 18016-80-3 | Dopamine agonists | 2 |
| Lomitapide | 182431-12-5 | Lipid-lowering agents | 2 |
| Lomustine | 13010-47-4 | Cytostatic antibiotics | 2 |
| Lumateperone | 313368-91-1 | Atypical antipsychotics | 2 |
| Lutein | 127-40-2 | | 2 |
| MES | 4432-31-9 | Other calcium Channel Blockers | 2 |
| Macrogol 3000 | | Laxatives | 2 |
| Macrogol 8000 | | Laxatives | 2 |
| Macrogol Cetostearyl Ether 25 | 68439-49-6 | Emulsifiers | 2 |
| Magnesium Aluminum Silicate | 1327-43-1 | Magnesium Salts | 2 |
| Magnesium acetate tetrahydrate | 16674-78-5 | Magnesium Salts | 2 |
| Magnesium aspartate | 18962-61-3 | Magnesium Salts | 2 |
| Malathion | 121-75-5 | Scabicides | 2 |
| Maltodextrin | 9050-36-6 | Indifferent resources | 2 |
| Maprotiline | 10262-69-8 | Tricyclic antidepressants | 2 |
| Maraviroc | 376348-65-1 | CCR5 antagonists | 2 |
| Marsh-mallow | | Herbal remedies | 2 |
| Mebhydroline Napadisylate | 6153-33-9 | Antihistamines | 2 |
| Meclofenamic acid | 644-62-2 | NSAIDs | 2 |
| Mepivacaine Hydrochloride | 1722-62-9 | | 2 |
| Meptasol | 3366-95-8 | | 2 |
| Metformin HCL | 15537-72-1 | | 2 |
| Methenamine Mandelate | 587-23-5 | Urinary antiseptics | 2 |
| Methylergometrine | 113-42-8 | Uterotonics | 2 |
| Mildronate | 76144-81-5 | | 2 |