- Macitentan
- Marmelosin
- Mebendazole
- Meclizine
- Mecysteine
- Mefenamic Acid
- Melatonin
- Meloxicam
- Memantine
- Mesalazine
- Metamizole
- Metaraminol
- Metformin
- Methotrexate
- Methyl Prednisolone
- Methylene blue
- Metoclopramide
- Metoprolol
- Metronidazole
- Miconazole
- Midazolam
- Midodrine
- Milnacipran
- Minoxidil
- Mirabegron
- Mirtazapine
- Modafinil
- Molnupiravir
- Mometasone
- Montelukast
- Mosapride
- Moxifloxacin
- Mycophenolate Mofetil