By API Standards
- Macitentan
- Mafosfamide
- Maprotiline
- Maprotiline HCl
- Maraviroc
- Mebeverine
- Meclizine
- Medroxyprogesterone
- MefenaMic
- Megestrol acetate
- Meloxicam
- Memantine
- Menbutone
- Menthol
- Mephenytoin
- Meprednisone
- Mequitazine
- Mesalamine
- Mesalazine
- Mesotrione
- Mestanolone
- Mestranol
- Metanephrine
- Metformin
- Methdilazine
- Methimazole
- Methocarbamol
- Methotrexate
- Methotrimeprazine
- Methsuximide
- Methyl Naltrexone
- Methyl Orlistat
- METHYLCHOLINE
- Methyldopa
- Methylnaltrexone
- Methylprednisolone
- Metolazone
- Metoprolol
- Metronidazole
- Mexiletine
- Midodrine
- Midostaurin
- Mifepristone
- Minoxidil
- Mirabegron
- Mirogabalin
- Mirtazapine
- Misoprostol
- MK-1775
- MK-1776
- Moclobemide
- Modafinil
- Molnupiravir
- Mometasone
- Montelukast
- Mupirocin
- Mycophenolate
- Mycophenolate Mofetil
- Mycophenolic acid
- myrcene