By API Standards
- Macitentan
- Maleic Acid
- Marmelosin
- Mebendazole
- Mebeverine
- Meclizine
- Mecobalamin
- Mecysteine
- Medetomidine
- Medroxyprogesterone
- Medroxyprogesterone Acetate
- MefenaMic
- Mefenamic Acid
- Megestrol Acetate
- Melatonin
- Meloxicam
- Memantine
- Memantine Hydrochloride
- Menthol
- Meropenem
- Meropenem Trihydrate
- Mertansine
- Mesalamine
- Mesalazine
- Mesotrione
- Metadoxine
- Metamizole
- Metaraminol
- Metaxalone
- Metformin
- Methenamine
- Methimazole
- Methionine
- Methocarbamol
- Methotrexate
- Methotrimeprazine
- Methyl Naltrexone
- Methyl Parahydroxybenzoate
- Methyl Prednisolone
- Methyl Salicylate
- Methyldopa
- Methylene blue
- Methylnaltrexone
- Methylprednisolone
- Metoclopramide
- Metolazone
- Metoprolol
- Metronidazole
- Mexiletine
- Miconazole
- Midazolam
- Midodrine
- Midostaurin
- Mifepristone
- Milnacipran
- Minocycline
- Minoxidil
- Mirabegron
- Mirogabalin
- Mirtazapine
- MK-1775
- MK-1776
- Modafinil
- Moexipril
- Molnupiravir
- Molsidomine
- Momelotinib
- Mometasone
- Montelukast
- Mosapride
- Mosapride Citrate
- Moxidectin
- Moxifloxacin
- Moxonidine
- Mupirocin
- Mycophenolate
- Mycophenolate Mofetil