| Mebeverinum INN hýdróklóríð |
| Meclozinum INN hýdróklóríð |
| Medroxyprogesteronum INN acetat |
| Melperonum INN hýdróklóríð |
| Memantinum INN hýdróklóríð |
| Mepivacainum INN hýdróklóríð |
| Mercaptaminum INN bítartrat |
| Meropenemum INN tríhýdrat |
| Metforminum INN hýdróklóríð |
| Methadonum INN hýdróklóríð |
| Methenaminum INN hippúrat |
| Methyl aminolevulinate hydrochloride |
| Methylergometrinum INN maleat |
| Methylhydroxypropylcellulosum INN |
| Methylphenidatum INN hýdróklóríð |
| Methylprednisolonum INN acetat |
| Methylprednisolonum INN natríumsúkkínat |
| Methylthioninii chloridum INN |