| Lotilaner | 1369852-71-0 | | 1 |
| Lotilaner Intermediates | | | 1 |
| Lovage root | | Herbal remedies | 1 |
| Lucitanib intermediates | 286371-49-1 | | 1 |
| Lufenuron | 2765-97-1 | | 1 |
| Lumacaftor | 936727-05-8 | CFTR regulator | 1 |
| Lungwort herb | | Herbal remedies | 1 |
| Luo Han Guo extract | 88901-36-4 | Herbal remedies | 1 |
| Lurasidone Hydrochloride | 367514-88-3 | | 1 |
| Luseogliflozin | 898537-18-3 | Gastrointestinal Agents | 1 |
| Luteolin | 7691-99-4 | | 1 |
| Lycopodium | | Herbal remedies | 1 |
| Lysergol | 602-85-7 | Ergot alkaloids | 1 |
| Lysozyme | 54-21-7 | | 1 |
| Macitentan intermediates | 147962-41-2 | | 1 |
| Macrogol 15 hydroxystearate | | Emollients and protectives | 1 |
| Macrogol 20 glycerolmonostearat | | Emulsifiers | 1 |
| Macrogol 600 | | Laxatives | 1 |
| Macrogol Cetostearyl Ether 20 | 9004-98-2 | Emulsifiers | 1 |
| Macrogol Stearate 8 | | Emulsifiers | 1 |
| Macrogol stearate 20 | | Emulsifiers | 1 |
| Magaldrate Powder | 74978-16-8 | | 1 |
| Magnesium DL-Aspartate Tetrahydrate | 2068-80-6 | | 1 |
| Magnesium Monoethyl Fumarate | 83918-60-9 | Magnesium Salts | 1 |
| Magnesium bromide hexahydrate | 13446-53-2 | Magnesium Salts | 1 |
| Magnesium fluoride | 16674-78-5 | Magnesium Salts | 1 |
| Magnesium salicylate | 18917-89-0 | | 1 |
| Maltose | 69-79-4 | Indifferent resources | 1 |
| Manganese carbonate | 598-62-9 | Means in metabolic disorders | 1 |
| Manganese(II) chloride tetrahydrate | 13446-34-9 | | 1 |
| Manganese(II) sulfate monohydrate | 10034-96-5 | | 1 |
| Manna | | Laxatives | 1 |
| Marian thistle | | Herbal remedies | 1 |
| Maribavir | 1599432-33-6 | Antivirals | 1 |
| Marigold flower | | Herbal remedies | 1 |
| Mate leaf | | Herbal remedies | 1 |
| Matricaria | | Herbal remedies | 1 |
| Matuzumab | 339186-68-4 | | 1 |
| Maxacalcitol | 103909-75-7 | Antineoplastics | 1 |
| Maytansinol | 57103-68-1 | Cytostatic antibiotics | 1 |